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Chaetopterus Stock Photos and Images
Parchment Worm - Chaetopterus variopedatus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-parchment-worm-chaetopterus-variopedatus-80400148.htmlRMEJPF5T–Parchment Worm - Chaetopterus variopedatus
Tube formed by a Chaetopterus varieopedatus worm in an intertidal zone in Kwazulu Natal, South Africa Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-tube-formed-by-a-chaetopterus-varieopedatus-worm-in-an-intertidal-49050959.htmlRMCRPCYY–Tube formed by a Chaetopterus varieopedatus worm in an intertidal zone in Kwazulu Natal, South Africa
Parchment Worm - Chaetopterus variopedatus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-parchment-worm-chaetopterus-variopedatus-80398517.htmlRMEJPD3H–Parchment Worm - Chaetopterus variopedatus
chaetopterus chaetopterus pergamentaceus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-chaetopterus-chaetopterus-pergamentaceus-24660035.htmlRMBC3A3F–chaetopterus chaetopterus pergamentaceus
Parchment worm (Chaetopterus variopedatus) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/parchment-worm-chaetopterus-variopedatus-image216227540.htmlRMPFP0C4–Parchment worm (Chaetopterus variopedatus)
ANIMALS: Chaetopterus; Tube-worm (Hermella), antique print 1896 Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-animals-chaetopterus-tube-worm-hermella-antique-print-1896-103181429.htmlRFFYT8Y1–ANIMALS: Chaetopterus; Tube-worm (Hermella), antique print 1896
Chaetopterus norvegicus, Print Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-norvegicus-print-image328671928.htmlRM2A2M8B4–Chaetopterus norvegicus, Print
Chaetopterus variopedatus, Parchment worm Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-variopedatus-parchment-worm-image178194033.htmlRFM9WC8H–Chaetopterus variopedatus, Parchment worm
South African ostrich, young bird chaetopterus variopedatus (c. australis) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/south-african-ostrich-young-bird-chaetopterus-variopedatus-c-australis-image559991069.htmlRF2RF1P91–South African ostrich, young bird chaetopterus variopedatus (c. australis)
323 Chaetopterus variopedatus by Schmarda Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/323-chaetopterus-variopedatus-by-schmarda-image210129918.htmlRMP5T6RX–323 Chaetopterus variopedatus by Schmarda
Chaetopterus variopedatus, Pergamentwurm oder Pergamentröhrenwurm, Historisch, digital restaurierte Reproduktion von einer Vorlage aus dem 19. Jahrhundert Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-variopedatus-pergamentwurm-oder-pergamentrhrenwurm-historisch-digital-restaurierte-reproduktion-von-einer-vorlage-aus-dem-19-jahrhundert-image513295996.htmlRF2MR2J7T–Chaetopterus variopedatus, Pergamentwurm oder Pergamentröhrenwurm, Historisch, digital restaurierte Reproduktion von einer Vorlage aus dem 19. Jahrhundert
. Chaetopterus pergamentaceus 58 Chaetopterus pergamentaceus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 102 11 0003 Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-pergamentaceus-58-chaetopterus-pergamentaceus-print-iconographia-zoologica-special-collections-university-of-amsterdam-ubainv0274-102-11-0003-image207860157.htmlRMP24RN1–. Chaetopterus pergamentaceus 58 Chaetopterus pergamentaceus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 102 11 0003
Archive image from page 160 of Cytology (1961). Cytology cytology00wils Year: 1961 (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. 'Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/archive-image-from-page-160-of-cytology-1961-cytology-cytology00wils-year-1961-a-b-figure-6-2-a-first-maturation-division-spindle-in-living-oocyte-of-chaetopterus-pergamentaceous-photographed-with-polarization-optics-the-bright-chromosomal-and-continuous-fibers-of-the-spindle-and-the-dark-astral-rays-are-all-positively-birefrigent-and-appear-as-dark-bodies-at-the-equator-of-the-cell-lb-tracing-of-first-maturation-division-spindle-of-chaetopterus-showing-detail-of-component-parts-from-inoue-s-1953-polarization-optical-studies-of-the-mitotic-spindle-i-the-demonstration-image259462596.htmlRMW23F58–Archive image from page 160 of Cytology (1961). Cytology cytology00wils Year: 1961 (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. 'Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration
. Chaetopterus pergamentaceus 58 Chaetopterus pergamentaceus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 007 01 0018 Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-pergamentaceus-58-chaetopterus-pergamentaceus-print-iconographia-zoologica-special-collections-university-of-amsterdam-ubainv0274-007-01-0018-image207825582.htmlRMP237J6–. Chaetopterus pergamentaceus 58 Chaetopterus pergamentaceus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 007 01 0018
Journal of experimental zoology . best set forth byConklin. It has, however, been impossible to follow these sub-stances far by cytological methods, so that their fate is largely amatter of conjecture. In the egg of Chaetopterus such substances,oxy-chromatin, are similarly set free, and, in addition to these,there is liberated at each mitosis a group of large granules that canbe followed through at least one cell-generation m each case.These are the bodies that Mead described in the first cleavage asnucleoli. Their history in the first cleavage is briefly as follows: Theyarise in connection wi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/journal-of-experimental-zoology-best-set-forth-byconklin-it-has-however-been-impossible-to-follow-these-sub-stances-far-by-cytological-methods-so-that-their-fate-is-largely-amatter-of-conjecture-in-the-egg-of-chaetopterus-such-substancesoxy-chromatin-are-similarly-set-free-and-in-addition-to-thesethere-is-liberated-at-each-mitosis-a-group-of-large-granules-that-canbe-followed-through-at-least-one-cell-generation-m-each-casethese-are-the-bodies-that-mead-described-in-the-first-cleavage-asnucleoli-their-history-in-the-first-cleavage-is-briefly-as-follows-theyarise-in-connection-wi-image338062548.htmlRM2AJ026C–Journal of experimental zoology . best set forth byConklin. It has, however, been impossible to follow these sub-stances far by cytological methods, so that their fate is largely amatter of conjecture. In the egg of Chaetopterus such substances,oxy-chromatin, are similarly set free, and, in addition to these,there is liberated at each mitosis a group of large granules that canbe followed through at least one cell-generation m each case.These are the bodies that Mead described in the first cleavage asnucleoli. Their history in the first cleavage is briefly as follows: Theyarise in connection wi
. Chaetopterus variopedatus syn. C. norvegicus 58 Chaetopterus norvegicus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 102 11 0002 Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-variopedatus-syn-c-norvegicus-58-chaetopterus-norvegicus-print-iconographia-zoologica-special-collections-university-of-amsterdam-ubainv0274-102-11-0002-image207860156.htmlRMP24RN0–. Chaetopterus variopedatus syn. C. norvegicus 58 Chaetopterus norvegicus - - Print - Iconographia Zoologica - Special Collections University of Amsterdam - UBAINV0274 102 11 0002
Oct. 15, 2014 - Black Sea, Ukraine - Jelly-like eggs of unknown origin, Black Sea, Crimea, Ukraine, Eastern Europe (Credit Image: © Andrey Nekrasov/ZUMA Wire/ZUMAPRESS.com) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-oct-15-2014-black-sea-ukraine-jelly-like-eggs-of-unknown-origin-black-86644573.htmlRMF0Y011–Oct. 15, 2014 - Black Sea, Ukraine - Jelly-like eggs of unknown origin, Black Sea, Crimea, Ukraine, Eastern Europe (Credit Image: © Andrey Nekrasov/ZUMA Wire/ZUMAPRESS.com)
Jelly-like eggs Sopra (Arenicola sp), Black Sea, Crimea Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-jelly-like-eggs-sopra-arenicola-sp-black-sea-crimea-48079288.htmlRFCP65HC–Jelly-like eggs Sopra (Arenicola sp), Black Sea, Crimea
![. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photo](https://c8.alamy.com/comp/PFK91C/cytology-cytology-a-b-figure-6-2-a-first-maturation-division-spindle-in-living-oocyte-of-chaetopterus-pergamentaceous-photographed-with-polarization-optics-the-bright-chromosomal-and-continuous-fibers-of-the-spindle-and-the-dark-astral-rays-are-all-positively-birefrigent-and-appear-as-dark-bodies-at-the-equator-of-the-cell-lb-tracing-of-first-maturation-division-spindle-of-chaetopterus-showing-detail-of-component-parts-from-inoue-s-1953-quotpolarization-optical-studies-of-the-mitotic-spindle-i-the-demonstration-of-spindle-fibers-in-living-cellsquot-chromosoma-5-fi-PFK91C.jpg ". Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photo")
. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytology-cytology-a-b-figure-6-2-a-first-maturation-division-spindle-in-living-oocyte-of-chaetopterus-pergamentaceous-photographed-with-polarization-optics-the-bright-chromosomal-and-continuous-fibers-of-the-spindle-and-the-dark-astral-rays-are-all-positively-birefrigent-and-appear-as-dark-bodies-at-the-equator-of-the-cell-lb-tracing-of-first-maturation-division-spindle-of-chaetopterus-showing-detail-of-component-parts-from-inoue-s-1953-quotpolarization-optical-studies-of-the-mitotic-spindle-i-the-demonstration-of-spindle-fibers-in-living-cellsquot-chromosoma-5-fi-image216168440.htmlRMPFK91C–. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi
. Dr. Johannes Leunis Synopsis der thierkunde. Ein handbuch für höhere lehranstalten und für alle, welche sich wissenschaftlich mit der naturgeschichte der thiere beschäftigen wollen . Phyllochaetopterus sociälis; 6/,. Ãörperabfcf)nitt aug 13 Segmenten au8 9 Segmenten, oon benen bie ba§ fiebente unb ac^te länger ftnb; ?änge etma 2 cm. 3^ ^^jj ^^^ 1) Chaetopterus=ä^nIi(^c. 2) /«(tt) SPcrffc, Ktepov giufcer, glcffe. 3) mit »erfci^ietenen (varius) pÃen (pedes). 4) O'jXAov Slatt, Chaetoptfrus 83= 9Jcte 2. 5) gcfcllig. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/dr-johannes-leunis-synopsis-der-thierkunde-ein-handbuch-fr-hhere-lehranstalten-und-fr-alle-welche-sich-wissenschaftlich-mit-der-naturgeschichte-der-thiere-beschftigen-wollen-phyllochaetopterus-socilis-6-rperabfcfnitt-aug-13-segmenten-au8-9-segmenten-oon-benen-bie-ba-fiebente-unb-acte-lnger-ftnb-nge-etma-2-cm-3-jj-1-chaetopterus=niic-2-tt-spcrffc-ktepov-giufcer-glcffe-3-mit-erfciietenen-varius-pen-pedes-4-ojxaov-slatt-chaetoptfrus-83=-9jcte-2-5-gcfcllig-image178485943.htmlRMMAAMHY–. Dr. Johannes Leunis Synopsis der thierkunde. Ein handbuch für höhere lehranstalten und für alle, welche sich wissenschaftlich mit der naturgeschichte der thiere beschäftigen wollen . Phyllochaetopterus sociälis; 6/,. Ãörperabfcf)nitt aug 13 Segmenten au8 9 Segmenten, oon benen bie ba§ fiebente unb ac^te länger ftnb; ?änge etma 2 cm. 3^ ^^jj ^^^ 1) Chaetopterus=ä^nIi(^c. 2) /«(tt) SPcrffc, Ktepov giufcer, glcffe. 3) mit »erfci^ietenen (varius) pÃen (pedes). 4) O'jXAov Slatt, Chaetoptfrus 83= 9Jcte 2. 5) gcfcllig.
Chaetopterus pergamentaceus, Print, Chaetopterus or the parchment worm or parchment tube worm is a genus of marine polychaete worm that lives in a tube it constructs in sediments or attaches to a rocky or coral reef substrate. The common name arises from the parchment-like appearance of the tubes that house these worms. Parchment tube worms are filter feeders and spend their adult lives in their tubes, unless the tube is damaged or destroyed. They are planktonic in their juvenile forms, as is typical for polychaete annelids. Species include the recently discovered deep water Chaetopterus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-pergamentaceus-print-chaetopterus-or-the-parchment-worm-or-parchment-tube-worm-is-a-genus-of-marine-polychaete-worm-that-lives-in-a-tube-it-constructs-in-sediments-or-attaches-to-a-rocky-or-coral-reef-substrate-the-common-name-arises-from-the-parchment-like-appearance-of-the-tubes-that-house-these-worms-parchment-tube-worms-are-filter-feeders-and-spend-their-adult-lives-in-their-tubes-unless-the-tube-is-damaged-or-destroyed-they-are-planktonic-in-their-juvenile-forms-as-is-typical-for-polychaete-annelids-species-include-the-recently-discovered-deep-water-chaetopterus-image328671930.htmlRM2A2M8B6–Chaetopterus pergamentaceus, Print, Chaetopterus or the parchment worm or parchment tube worm is a genus of marine polychaete worm that lives in a tube it constructs in sediments or attaches to a rocky or coral reef substrate. The common name arises from the parchment-like appearance of the tubes that house these worms. Parchment tube worms are filter feeders and spend their adult lives in their tubes, unless the tube is damaged or destroyed. They are planktonic in their juvenile forms, as is typical for polychaete annelids. Species include the recently discovered deep water Chaetopterus
South African ostrich, young bird chaetopterus variopedatus (c. australis) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/south-african-ostrich-young-bird-chaetopterus-variopedatus-c-australis-image559991078.htmlRF2RF1P9A–South African ostrich, young bird chaetopterus variopedatus (c. australis)
Az Osztrák-magyar monarchia irásban és képben . taz átlátszó Siphonostomum diplochaitos-é, majd pergamenszer?ek. minta ritkább Chaetopterus pergamentaceus lakása; a Serpi/la-fajok keménymészcsöveket építenek, melyek szarunem? fed?vel el is zárhatók; a Tere-bella nem számos faja igen különböz?, homokszemekb?l, kagylótöredékekb?ls hasonló anyagokból összetákolt vékony csöveket épít. Faunánkban e cs?benlakó férgek közül 71 faj él, melyek között 2 l faj sajátlagos; ezekhez tartoz-nak a többi közt: Clymene digitata (Quarnero). Leiochone leiopygos (Cherso).Phyllüchaetopterus gracilis (Crivizza), Mel Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/az-osztrk-magyar-monarchia-irsban-s-kpben-taz-tltsz-siphonostomum-diplochaitos-majd-pergamenszerek-minta-ritkbb-chaetopterus-pergamentaceus-laksa-a-serpila-fajok-kemnymszcsveket-ptenek-melyek-szarunem-fedvel-el-is-zrhatk-a-tere-bella-nem-szmos-faja-igen-klnbz-homokszemekbl-kagyltredkekbls-hasonl-anyagokbl-sszetkolt-vkony-csveket-pt-faunnkban-e-csbenlak-frgek-kzl-71-faj-l-melyek-kztt-2-l-faj-sajtlagos-ezekhez-tartoz-nak-a-tbbi-kzt-clymene-digitata-quarnero-leiochone-leiopygos-chersophyllchaetopterus-gracilis-crivizza-mel-image339243620.htmlRM2AKWTKG–Az Osztrák-magyar monarchia irásban és képben . taz átlátszó Siphonostomum diplochaitos-é, majd pergamenszer?ek. minta ritkább Chaetopterus pergamentaceus lakása; a Serpi/la-fajok keménymészcsöveket építenek, melyek szarunem? fed?vel el is zárhatók; a Tere-bella nem számos faja igen különböz?, homokszemekb?l, kagylótöredékekb?ls hasonló anyagokból összetákolt vékony csöveket épít. Faunánkban e cs?benlakó férgek közül 71 faj él, melyek között 2 l faj sajátlagos; ezekhez tartoz-nak a többi közt: Clymene digitata (Quarnero). Leiochone leiopygos (Cherso).Phyllüchaetopterus gracilis (Crivizza), Mel
Oct. 15, 2014 - Black Sea, Ukraine - Jelly-like eggs of unknown origin, Black Sea, Crimea, Ukraine, Eastern Europe (Credit Image: © Andrey Nekrasov/ZUMA Wire/ZUMAPRESS.com) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-oct-15-2014-black-sea-ukraine-jelly-like-eggs-of-unknown-origin-black-86644452.htmlRMF0XYTM–Oct. 15, 2014 - Black Sea, Ukraine - Jelly-like eggs of unknown origin, Black Sea, Crimea, Ukraine, Eastern Europe (Credit Image: © Andrey Nekrasov/ZUMA Wire/ZUMAPRESS.com)
Jelly-like eggs Sopra (Arenicola sp), Black Sea, Crimea Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-jelly-like-eggs-sopra-arenicola-sp-black-sea-crimea-48079304.htmlRFCP65J0–Jelly-like eggs Sopra (Arenicola sp), Black Sea, Crimea
. 大å¥ããäºãç¥ãã æ´ã«æå å¨(photir-organ.)ãç´°å¥ãã° ä¸ãè²ç´ ãæãããå®ä¸ã®æå ç´°è(photirzelle) åã¯ç´°è群ã(第ä¸å)Kaelnentaria officinalis (è¼ã®ä¸ç¨·) ã®æå ç´°èã äºãè²ç´ ãæãããåã¯è²ç´ ç´°èãä¾ãµãæå ç´°è群 (第äºå)chaetopterus variopedarus (å¤æ¯é¡)ã®å®ç¼ ä¸ãè²ç´ ã«åãããæå ç´°èã®ã¯ç´°è群ã(å¤ãã®ï¼HI è«ãå¤æ¯è«ããµãããã£ã¯ã¸ã¯ã²ç-ã«è¦ã)VJã®ä¸ãª å¥ã«ãã®äºãä¸ãå®ç¼(ocelle)ãäºãµäºãï¼00 åä¸è¬ã«è¦è¦ºå¨ãè¦ãã«ãäºã¤ã®å½¢å¼ãããå³ã¡ä¸ã¯å ç·æå ç´°èãç¶ã¦å¾è¦ç¥ç¶ã«è³ããã®ãä¹ãåæ°ã¯vert.- iH â¬ããä»ã¯ããã«å>ãã¦å ã¥è¦ç¥ç¶çºç¶-ãééï¼ãã¦ã® ã¡æå ç´°èã«å ¥ããã®ããããItwertirtã稱ããå¾äººã® ç¼ã®å¦>ãã(第äºåã¯Vertirtã«ããã¦ç¬¬ä¸å㯠Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/photir-organ-photirzelle-kaelnentaria-officinalis-chaetopterus-variopedarus-hi-vj-ocelle00-vert-ih-gt-itwertirt-gtvertirt-image179910427.htmlRMMCKHGB–. 大å¥ããäºãç¥ãã æ´ã«æå å¨(photir-organ.)ãç´°å¥ãã° ä¸ãè²ç´ ãæãããå®ä¸ã®æå ç´°è(photirzelle) åã¯ç´°è群ã(第ä¸å)Kaelnentaria officinalis (è¼ã®ä¸ç¨·) ã®æå ç´°èã äºãè²ç´ ãæãããåã¯è²ç´ ç´°èãä¾ãµãæå ç´°è群 (第äºå)chaetopterus variopedarus (å¤æ¯é¡)ã®å®ç¼ ä¸ãè²ç´ ã«åãããæå ç´°èã®ã¯ç´°è群ã(å¤ãã®ï¼HI è«ãå¤æ¯è«ããµãããã£ã¯ã¸ã¯ã²ç-ã«è¦ã)VJã®ä¸ãª å¥ã«ãã®äºãä¸ãå®ç¼(ocelle)ãäºãµäºãï¼00 åä¸è¬ã«è¦è¦ºå¨ãè¦ãã«ãäºã¤ã®å½¢å¼ãããå³ã¡ä¸ã¯å ç·æå ç´°èãç¶ã¦å¾è¦ç¥ç¶ã«è³ããã®ãä¹ãåæ°ã¯vert.- iH â¬ããä»ã¯ããã«å>ãã¦å ã¥è¦ç¥ç¶çºç¶-ãééï¼ãã¦ã® ã¡æå ç´°èã«å ¥ããã®ããããItwertirtã稱ããå¾äººã® ç¼ã®å¦>ãã(第äºåã¯Vertirtã«ããã¦ç¬¬ä¸åã¯
Chaetopterus pergamentaceus, Print, Chaetopterus or the parchment worm or parchment tube worm is a genus of marine polychaete worm that lives in a tube it constructs in sediments or attaches to a rocky or coral reef substrate. The common name arises from the parchment-like appearance of the tubes that house these worms. Parchment tube worms are filter feeders and spend their adult lives in their tubes, unless the tube is damaged or destroyed. They are planktonic in their juvenile forms, as is typical for polychaete annelids. Species include the recently discovered deep water Chaetopterus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/chaetopterus-pergamentaceus-print-chaetopterus-or-the-parchment-worm-or-parchment-tube-worm-is-a-genus-of-marine-polychaete-worm-that-lives-in-a-tube-it-constructs-in-sediments-or-attaches-to-a-rocky-or-coral-reef-substrate-the-common-name-arises-from-the-parchment-like-appearance-of-the-tubes-that-house-these-worms-parchment-tube-worms-are-filter-feeders-and-spend-their-adult-lives-in-their-tubes-unless-the-tube-is-damaged-or-destroyed-they-are-planktonic-in-their-juvenile-forms-as-is-typical-for-polychaete-annelids-species-include-the-recently-discovered-deep-water-chaetopterus-image328671929.htmlRM2A2M8B5–Chaetopterus pergamentaceus, Print, Chaetopterus or the parchment worm or parchment tube worm is a genus of marine polychaete worm that lives in a tube it constructs in sediments or attaches to a rocky or coral reef substrate. The common name arises from the parchment-like appearance of the tubes that house these worms. Parchment tube worms are filter feeders and spend their adult lives in their tubes, unless the tube is damaged or destroyed. They are planktonic in their juvenile forms, as is typical for polychaete annelids. Species include the recently discovered deep water Chaetopterus
Svenska vetenskapsakademien handlingar . Annelids Chaetopterus and the Nature of the Process of Fertilization. Amer. Journ. of Physiol. Vol. 4. N. 9. Jan. 1901. 14) Parker, G. H. The Mesenteries and Siphonoglyphs in Metridium marginatum Milne-Edw. Bull. Mus. Comp. Zool. 30 Nr. 5, p. 259. 1897. 15) Derselbe. Longitudinal Fission in Metridium margiuatum Milne-Edw. Bull. Mus. Comp. Zool. 35 Nr. 3 p. 43. 1899. 16) ToRBEY, H. B. Observations on Monogenesis in Metridium. Proc. Californ. Acad. Scienc. (3) 1. p. ,345. 1898. 17) Derselbe. Papers from the Harriman Alaska Expedition 30. Anemones with dis Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/svenska-vetenskapsakademien-handlingar-annelids-chaetopterus-and-the-nature-of-the-process-of-fertilization-amer-journ-of-physiol-vol-4-n-9-jan-1901-14-parker-g-h-the-mesenteries-and-siphonoglyphs-in-metridium-marginatum-milne-edw-bull-mus-comp-zool-30-nr-5-p-259-1897-15-derselbe-longitudinal-fission-in-metridium-margiuatum-milne-edw-bull-mus-comp-zool-35-nr-3-p-43-1899-16-torbey-h-b-observations-on-monogenesis-in-metridium-proc-californ-acad-scienc-3-1-p-345-1898-17-derselbe-papers-from-the-harriman-alaska-expedition-30-anemones-with-dis-image339049539.htmlRM2AKH143–Svenska vetenskapsakademien handlingar . Annelids Chaetopterus and the Nature of the Process of Fertilization. Amer. Journ. of Physiol. Vol. 4. N. 9. Jan. 1901. 14) Parker, G. H. The Mesenteries and Siphonoglyphs in Metridium marginatum Milne-Edw. Bull. Mus. Comp. Zool. 30 Nr. 5, p. 259. 1897. 15) Derselbe. Longitudinal Fission in Metridium margiuatum Milne-Edw. Bull. Mus. Comp. Zool. 35 Nr. 3 p. 43. 1899. 16) ToRBEY, H. B. Observations on Monogenesis in Metridium. Proc. Californ. Acad. Scienc. (3) 1. p. ,345. 1898. 17) Derselbe. Papers from the Harriman Alaska Expedition 30. Anemones with dis
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. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 103.—Tomopteris. (From the Cambridge NaturalHistory, by permission of Messrs. Macmillan.). Fig. 104.—Types of Ch^etopod Larvae.From left to right: Mitraria, Nerine, Polygordius, Chaetopterus. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/science-of-the-sea-an-elementary-handbook-of-practical-oceanography-for-travellers-sailors-and-yachtsmen-fig-103tomopteris-from-the-cambridge-naturalhistory-by-permission-of-messrs-macmillan-fig-104types-of-chetopod-larvaefrom-left-to-right-mitraria-nerine-polygordius-chaetopterus-image370342609.htmlRM2CEEFNN–. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 103.—Tomopteris. (From the Cambridge NaturalHistory, by permission of Messrs. Macmillan.). Fig. 104.—Types of Ch^etopod Larvae.From left to right: Mitraria, Nerine, Polygordius, Chaetopterus.
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. Sitzungsberichte . stdas Vorkommen solcher Elemente beim Chaetopterus auf ganzbestimmte Körperpartien beschränkt. Es sind schließlich absolutkeine Behälter mit Stäbchen, die hier in Frage kommen,sondern Zellen mit Fadeninhalt. Natürlich ergibt sich aus meinen Betrachtungen auch eineganz andere biologische Deutung jener Gebilde, als wie sieClaparede in seinen »follicules bacillipares« suchte. Wir lesennämlich darüber bei ihm (1868, p. 15): »Le role de ces organesest, il est vrai, encore entierement problematique. Je les comparesautrefois aux cellules pleines dacicules des Turbellaries, etaux Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/sitzungsberichte-stdas-vorkommen-solcher-elemente-beim-chaetopterus-auf-ganzbestimmte-krperpartien-beschrnkt-es-sind-schlielich-absolutkeine-behlter-mit-stbchen-die-hier-in-frage-kommensondern-zellen-mit-fadeninhalt-natrlich-ergibt-sich-aus-meinen-betrachtungen-auch-eineganz-andere-biologische-deutung-jener-gebilde-als-wie-sieclaparede-in-seinen-follicules-bacillipares-suchte-wir-lesennmlich-darber-bei-ihm-1868-p-15-le-role-de-ces-organesest-il-est-vrai-encore-entierement-problematique-je-les-comparesautrefois-aux-cellules-pleines-dacicules-des-turbellaries-etaux-image370113404.htmlRM2CE43BT–. Sitzungsberichte . stdas Vorkommen solcher Elemente beim Chaetopterus auf ganzbestimmte Körperpartien beschränkt. Es sind schließlich absolutkeine Behälter mit Stäbchen, die hier in Frage kommen,sondern Zellen mit Fadeninhalt. Natürlich ergibt sich aus meinen Betrachtungen auch eineganz andere biologische Deutung jener Gebilde, als wie sieClaparede in seinen »follicules bacillipares« suchte. Wir lesennämlich darüber bei ihm (1868, p. 15): »Le role de ces organesest, il est vrai, encore entierement problematique. Je les comparesautrefois aux cellules pleines dacicules des Turbellaries, etaux
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. Brehms Tierleben; allgemeine kunde des thierreichs. Mit 1910 abbildungen im text, 11 karten und 180 tafeln in farbendruck und holzschnitt.. Zoology; Animal behavior; Zoologia Geral. Chaetopterus. DJatürlic^e ©rSfee.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Brehm, Alfred Edmund, 1829-1884. Leipzig : Bibliographisches Institute Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/brehms-tierleben-allgemeine-kunde-des-thierreichs-mit-1910-abbildungen-im-text-11-karten-und-180-tafeln-in-farbendruck-und-holzschnitt-zoology-animal-behavior-zoologia-geral-chaetopterus-djatrlice-rsfee-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-brehm-alfred-edmund-1829-1884-leipzig-bibliographisches-institute-image234301929.htmlRMRH5AE1–. Brehms Tierleben; allgemeine kunde des thierreichs. Mit 1910 abbildungen im text, 11 karten und 180 tafeln in farbendruck und holzschnitt.. Zoology; Animal behavior; Zoologia Geral. Chaetopterus. DJatürlic^e ©rSfee.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Brehm, Alfred Edmund, 1829-1884. Leipzig : Bibliographisches Institute
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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SENSITIVITY OF SPERM AND EGGS 83 sperm are much more sensitive than the eggs; in the worms such as Urechis, Nereis, and Chaetopterus the sperm is slightly if at all more sensitive than the egg, as judged by cleavage delay. Such a lack of differences in susceptibility of the gametes might be more ap- parent than real. It is possible that when there is little or no cleavage delay follow- ing fertilization of an egg with an irradiated sperm, the sperm may be serving only to activate the egg to haploid parthenogenesis. Eggs of A Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-sensitivity-of-sperm-and-eggs-83-sperm-are-much-more-sensitive-than-the-eggs-in-the-worms-such-as-urechis-nereis-and-chaetopterus-the-sperm-is-slightly-if-at-all-more-sensitive-than-the-egg-as-judged-by-cleavage-delay-such-a-lack-of-differences-in-susceptibility-of-the-gametes-might-be-more-ap-parent-than-real-it-is-possible-that-when-there-is-little-or-no-cleavage-delay-follow-ing-fertilization-of-an-egg-with-an-irradiated-sperm-the-sperm-may-be-serving-only-to-activate-the-egg-to-haploid-parthenogenesis-eggs-of-a-image234668400.htmlRMRHP1X8–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SENSITIVITY OF SPERM AND EGGS 83 sperm are much more sensitive than the eggs; in the worms such as Urechis, Nereis, and Chaetopterus the sperm is slightly if at all more sensitive than the egg, as judged by cleavage delay. Such a lack of differences in susceptibility of the gametes might be more ap- parent than real. It is possible that when there is little or no cleavage delay follow- ing fertilization of an egg with an irradiated sperm, the sperm may be serving only to activate the egg to haploid parthenogenesis. Eggs of A
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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 84 ARTHUR C. GIESE Nereis, Chaetopterus, and Dendraster. Whether this is due to mere physical screening by some inert materials in the egg or to differences in concentration of some light sensitive materials is not known. Action spectra for egg and sperm If irradiation of the nucleus alone causes retardation of division of the cell, the same action spectrum should be found for egg and sperm; that is, there should be no qualitative difference in effectiveness of different wave-lengths even though the general susceptibility of Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-84-arthur-c-giese-nereis-chaetopterus-and-dendraster-whether-this-is-due-to-mere-physical-screening-by-some-inert-materials-in-the-egg-or-to-differences-in-concentration-of-some-light-sensitive-materials-is-not-known-action-spectra-for-egg-and-sperm-if-irradiation-of-the-nucleus-alone-causes-retardation-of-division-of-the-cell-the-same-action-spectrum-should-be-found-for-egg-and-sperm-that-is-there-should-be-no-qualitative-difference-in-effectiveness-of-different-wave-lengths-even-though-the-general-susceptibility-of-image234668385.htmlRMRHP1WN–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 84 ARTHUR C. GIESE Nereis, Chaetopterus, and Dendraster. Whether this is due to mere physical screening by some inert materials in the egg or to differences in concentration of some light sensitive materials is not known. Action spectra for egg and sperm If irradiation of the nucleus alone causes retardation of division of the cell, the same action spectrum should be found for egg and sperm; that is, there should be no qualitative difference in effectiveness of different wave-lengths even though the general susceptibility of
. The biology of the cell surface. Cytology. THE ECTOPLASM plasmic structure of the Rhynchelmis egg is similar to that recorded for the Nereis-egg by several workers beginning with Goette^ and this in turn recalls Spengel's older descrip- tion for the egg of Bonellia.^ Also the Chaetopterus-egg has an interesting ectoplasm,^so too that of Thalassema^ (Fig. 12). Among the great group of soft- bodied animals, the mollusks, including the clams, snails and ink or cuttle fishes, the following produce eggs in which the ecto- riG. 12.—Ectoplasm on the plasm has been observed to be living egg of Thdla Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-cell-surface-cytology-the-ectoplasm-plasmic-structure-of-the-rhynchelmis-egg-is-similar-to-that-recorded-for-the-nereis-egg-by-several-workers-beginning-with-goette-and-this-in-turn-recalls-spengels-older-descrip-tion-for-the-egg-of-bonellia-also-the-chaetopterus-egg-has-an-interesting-ectoplasmso-too-that-of-thalassema-fig-12-among-the-great-group-of-soft-bodied-animals-the-mollusks-including-the-clams-snails-and-ink-or-cuttle-fishes-the-following-produce-eggs-in-which-the-ecto-rig-12ectoplasm-on-the-plasm-has-been-observed-to-be-living-egg-of-thdla-image234609112.htmlRMRHKA8T–. The biology of the cell surface. Cytology. THE ECTOPLASM plasmic structure of the Rhynchelmis egg is similar to that recorded for the Nereis-egg by several workers beginning with Goette^ and this in turn recalls Spengel's older descrip- tion for the egg of Bonellia.^ Also the Chaetopterus-egg has an interesting ectoplasm,^so too that of Thalassema^ (Fig. 12). Among the great group of soft- bodied animals, the mollusks, including the clams, snails and ink or cuttle fishes, the following produce eggs in which the ecto- riG. 12.—Ectoplasm on the plasm has been observed to be living egg of Thdla
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. VISCOSITY CHANGES DURING MATURATION 273 Hence we can assume that the liquefaction of the protoplasm that occurs in the Chaetopterus egg is not clue to some substance liberated from the nucleus, for it occurs before the nucleus shows any signs of breaking down. Our results thus indicate that the liquefying effect is due to the protease described by Goldstein (1953). According to Goldstein, as soon as the Chaetopterus egg enters sea water, a proteolytic enzyme system is activated by the entrance of calcium into the cell interi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-viscosity-changes-during-maturation-273-hence-we-can-assume-that-the-liquefaction-of-the-protoplasm-that-occurs-in-the-chaetopterus-egg-is-not-clue-to-some-substance-liberated-from-the-nucleus-for-it-occurs-before-the-nucleus-shows-any-signs-of-breaking-down-our-results-thus-indicate-that-the-liquefying-effect-is-due-to-the-protease-described-by-goldstein-1953-according-to-goldstein-as-soon-as-the-chaetopterus-egg-enters-sea-water-a-proteolytic-enzyme-system-is-activated-by-the-entrance-of-calcium-into-the-cell-interi-image234666187.htmlRMRHNY37–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. VISCOSITY CHANGES DURING MATURATION 273 Hence we can assume that the liquefaction of the protoplasm that occurs in the Chaetopterus egg is not clue to some substance liberated from the nucleus, for it occurs before the nucleus shows any signs of breaking down. Our results thus indicate that the liquefying effect is due to the protease described by Goldstein (1953). According to Goldstein, as soon as the Chaetopterus egg enters sea water, a proteolytic enzyme system is activated by the entrance of calcium into the cell interi
. The biology of marine animals. Marine animals; Physiology, Comparative. Photocytes. Nerve Basophile Course granular eosinoph'ile Fig. 13.3. Light-Producing Cells or Photocytes of Chaetopterus variopedatus Section through the epidermis of the aliform notopodium.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-marine-animals-marine-animals-physiology-comparative-photocytes-nerve-basophile-course-granular-eosinophile-fig-133-light-producing-cells-or-photocytes-of-chaetopterus-variopedatus-section-through-the-epidermis-of-the-aliform-notopodium-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-nicol-j-a-colin-joseph-arthur-colin-1915-new-york-interscience-publishers-image234601619.htmlRMRHK0N7–. The biology of marine animals. Marine animals; Physiology, Comparative. Photocytes. Nerve Basophile Course granular eosinoph'ile Fig. 13.3. Light-Producing Cells or Photocytes of Chaetopterus variopedatus Section through the epidermis of the aliform notopodium.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
![. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 213 them, permanent features of these cells, persisting even when the cells are at rest. In the dividing cell the corresponding structures are, as a rule, only transitory. The primary oocyte of Chaetopterus, however, is a remarkable exception to the rule. So long as the oocyte remains in the body-cavity of the worm, it contains a large germinal vesicle and no trace of asters or centrosomes; but, after it has been deposited in sea- water, a typical amphiaster with d Stock Photo](https://c8.alamy.com/comp/RHM44J/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-the-function-of-the-centrosome-213-them-permanent-features-of-these-cells-persisting-even-when-the-cells-are-at-rest-in-the-dividing-cell-the-corresponding-structures-are-as-a-rule-only-transitory-the-primary-oocyte-of-chaetopterus-however-is-a-remarkable-exception-to-the-rule-so-long-as-the-oocyte-remains-in-the-body-cavity-of-the-worm-it-contains-a-large-germinal-vesicle-and-no-trace-of-asters-or-centrosomes-but-after-it-has-been-deposited-in-sea-water-a-typical-amphiaster-with-d-RHM44J.jpg ". Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 213 them, permanent features of these cells, persisting even when the cells are at rest. In the dividing cell the corresponding structures are, as a rule, only transitory. The primary oocyte of Chaetopterus, however, is a remarkable exception to the rule. So long as the oocyte remains in the body-cavity of the worm, it contains a large germinal vesicle and no trace of asters or centrosomes; but, after it has been deposited in sea- water, a typical amphiaster with d Stock Photo")
. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 213 them, permanent features of these cells, persisting even when the cells are at rest. In the dividing cell the corresponding structures are, as a rule, only transitory. The primary oocyte of Chaetopterus, however, is a remarkable exception to the rule. So long as the oocyte remains in the body-cavity of the worm, it contains a large germinal vesicle and no trace of asters or centrosomes; but, after it has been deposited in sea- water, a typical amphiaster with d Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-the-function-of-the-centrosome-213-them-permanent-features-of-these-cells-persisting-even-when-the-cells-are-at-rest-in-the-dividing-cell-the-corresponding-structures-are-as-a-rule-only-transitory-the-primary-oocyte-of-chaetopterus-however-is-a-remarkable-exception-to-the-rule-so-long-as-the-oocyte-remains-in-the-body-cavity-of-the-worm-it-contains-a-large-germinal-vesicle-and-no-trace-of-asters-or-centrosomes-but-after-it-has-been-deposited-in-sea-water-a-typical-amphiaster-with-d-image234626242.htmlRMRHM44J–. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 213 them, permanent features of these cells, persisting even when the cells are at rest. In the dividing cell the corresponding structures are, as a rule, only transitory. The primary oocyte of Chaetopterus, however, is a remarkable exception to the rule. So long as the oocyte remains in the body-cavity of the worm, it contains a large germinal vesicle and no trace of asters or centrosomes; but, after it has been deposited in sea- water, a typical amphiaster with d
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SIBOGLINID EVOLUTIONARY HISTORY 69 e; 99 100 100 1 100 ipirooracnia I Polybrachia l g1 Galathealmum ^— Siboglinumekmani 100 r Siboghnum fiordicum GB Siboglinum fiordicum 86. 58 (D 96 59 Escarpia Ridgeia RidgeiaGB Oasisia — Riftia Tevnia Lamellibrachia Sderolinum ^— Enchytraeus -Oligochaete ^^^^^^—^^— Haemopis -Leech Moniliferan Sabella - Polychaete Paralvinella - Polychaete Phascolosoma -Sipunculid Ochetostoma - Echiund Chaetopterus - Polychaete Glycera Polychaete —^^—— Lineus Nemertean Scutopus Mollusk Artemia - Arthropod Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-siboglinid-evolutionary-history-69-e-99-100-100-1-100-ipirooracnia-i-polybrachia-l-g1-galathealmum-siboglinumekmani-100-r-siboghnum-fiordicum-gb-siboglinum-fiordicum-86-58-d-96-59-escarpia-ridgeia-ridgeiagb-oasisia-riftia-tevnia-lamellibrachia-sderolinum-enchytraeus-oligochaete-haemopis-leech-moniliferan-sabella-polychaete-paralvinella-polychaete-phascolosoma-sipunculid-ochetostoma-echiund-chaetopterus-polychaete-glycera-polychaete-lineus-nemertean-scutopus-mollusk-artemia-arthropod-image234631004.htmlRMRHMA6M–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SIBOGLINID EVOLUTIONARY HISTORY 69 e; 99 100 100 1 100 ipirooracnia I Polybrachia l g1 Galathealmum ^— Siboglinumekmani 100 r Siboghnum fiordicum GB Siboglinum fiordicum 86. 58 (D 96 59 Escarpia Ridgeia RidgeiaGB Oasisia — Riftia Tevnia Lamellibrachia Sderolinum ^— Enchytraeus -Oligochaete ^^^^^^—^^— Haemopis -Leech Moniliferan Sabella - Polychaete Paralvinella - Polychaete Phascolosoma -Sipunculid Ochetostoma - Echiund Chaetopterus - Polychaete Glycera Polychaete —^^—— Lineus Nemertean Scutopus Mollusk Artemia - Arthropod
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LUMINESCENCE CONTROL IN CHAETOPTERUS 589 100ms i 60MV 2S. 200ms FIGURE 6. Recordings of electrical activity in the nerve cord (upper trace) in response to mechanical stimulation (.015 dyne) of the parapodial epidermis from the corresponding posterior segment (lower trace). Note the increment of impulse amplitude as a function of stimulus duration. Similar responses were obtained in all three specimens tested. was dependent on stimulus strength or duration, was of much shorter duration than those associated with propagated l Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-luminescence-control-in-chaetopterus-589-100ms-i-60mv-2s-200ms-figure-6-recordings-of-electrical-activity-in-the-nerve-cord-upper-trace-in-response-to-mechanical-stimulation-015-dyne-of-the-parapodial-epidermis-from-the-corresponding-posterior-segment-lower-trace-note-the-increment-of-impulse-amplitude-as-a-function-of-stimulus-duration-similar-responses-were-obtained-in-all-three-specimens-tested-was-dependent-on-stimulus-strength-or-duration-was-of-much-shorter-duration-than-those-associated-with-propagated-l-image234618761.htmlRMRHKPHD–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LUMINESCENCE CONTROL IN CHAETOPTERUS 589 100ms i 60MV 2S. 200ms FIGURE 6. Recordings of electrical activity in the nerve cord (upper trace) in response to mechanical stimulation (.015 dyne) of the parapodial epidermis from the corresponding posterior segment (lower trace). Note the increment of impulse amplitude as a function of stimulus duration. Similar responses were obtained in all three specimens tested. was dependent on stimulus strength or duration, was of much shorter duration than those associated with propagated l
![. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photo](https://c8.alamy.com/comp/RD33BK/cytology-cytology-a-b-figure-6-2-a-first-maturation-division-spindle-in-living-oocyte-of-chaetopterus-pergamentaceous-photographed-with-polarization-optics-the-bright-chromosomal-and-continuous-fibers-of-the-spindle-and-the-dark-astral-rays-are-all-positively-birefrigent-and-appear-as-dark-bodies-at-the-equator-of-the-cell-lb-tracing-of-first-maturation-division-spindle-of-chaetopterus-showing-detail-of-component-parts-from-inoue-s-1953-quotpolarization-optical-studies-of-the-mitotic-spindle-i-the-demonstration-of-spindle-fibers-in-living-cellsquot-chromosoma-5-fi-RD33BK.jpg ". Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photo")
. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytology-cytology-a-b-figure-6-2-a-first-maturation-division-spindle-in-living-oocyte-of-chaetopterus-pergamentaceous-photographed-with-polarization-optics-the-bright-chromosomal-and-continuous-fibers-of-the-spindle-and-the-dark-astral-rays-are-all-positively-birefrigent-and-appear-as-dark-bodies-at-the-equator-of-the-cell-lb-tracing-of-first-maturation-division-spindle-of-chaetopterus-showing-detail-of-component-parts-from-inoue-s-1953-quotpolarization-optical-studies-of-the-mitotic-spindle-i-the-demonstration-of-spindle-fibers-in-living-cellsquot-chromosoma-5-fi-image231793847.htmlRMRD33BK–. Cytology. Cytology. (a) (b) Figure 6-2. (a) First Maturation Division Spindle in Living Oocyte of Chaetopterus pergamentaceous Photographed with Polarization Optics. The bright chromosomal and continuous fibers of the spindle and the dark astral rays are all positively birefrigent and appear as dark bodies at the equator of the cell, (lb) Tracing of First Maturation Division Spindle of Chaetopterus Showing Detail of Component Parts. (From Inoue, S., 1953. "Polarization Optical Studies of the Mitotic Spindle. I. The Demonstration of Spindle Fibers in Living Cells," Chromosoma, 5, Fi
. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 285 CHART OF VINEYARD SOUND BUZZARDS BAY SHOWING DISTRIBUTION OF SPECIES ol NEW BEDFORD®. Chart 67.—Chaetopterus pergamentaceus (tubes only).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States. Bureau of Fisheries; Sumner, Francis Bertody, 1874-; Osburn, Raymond Carroll, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-biological-survey-of-the-waters-of-woods-hole-and-vicinity-marine-animals-marine-plants-biological-survey-of-woods-hole-and-vicinity-285-chart-of-vineyard-sound-buzzards-bay-showing-distribution-of-species-ol-new-bedford-chart-67chaetopterus-pergamentaceus-tubes-only-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-united-states-bureau-of-fisheries-sumner-francis-bertody-1874-osburn-raymond-carroll-image237971789.htmlRMRR4FCD–. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 285 CHART OF VINEYARD SOUND BUZZARDS BAY SHOWING DISTRIBUTION OF SPECIES ol NEW BEDFORD®. Chart 67.—Chaetopterus pergamentaceus (tubes only).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States. Bureau of Fisheries; Sumner, Francis Bertody, 1874-; Osburn, Raymond Carroll,
. The biology of marine animals. Marine animals; Physiology, Comparative. Nerve Basophile Course granular eosinoph'ile Fig. 13.3. Light-Producing Cells or Photocytes of Chaetopterus variopedatus Section through the epidermis of the aliform notopodium.. Fig. 13.4. Pelagic Shrimp {Systellaspis?) Discharging a Luminous Cloud (after Beebe, 1934.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nicol, J. A. Colin (Joseph Arthur Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-marine-animals-marine-animals-physiology-comparative-nerve-basophile-course-granular-eosinophile-fig-133-light-producing-cells-or-photocytes-of-chaetopterus-variopedatus-section-through-the-epidermis-of-the-aliform-notopodium-fig-134-pelagic-shrimp-systellaspis-discharging-a-luminous-cloud-after-beebe-1934-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-nicol-j-a-colin-joseph-arthur-image234601607.htmlRMRHK0MR–. The biology of marine animals. Marine animals; Physiology, Comparative. Nerve Basophile Course granular eosinoph'ile Fig. 13.3. Light-Producing Cells or Photocytes of Chaetopterus variopedatus Section through the epidermis of the aliform notopodium.. Fig. 13.4. Pelagic Shrimp {Systellaspis?) Discharging a Luminous Cloud (after Beebe, 1934.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nicol, J. A. Colin (Joseph Arthur
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 329 niban et <//., 1997). Our observations never give the impres- sion that these segmental rudiments are produced sequen- tially, anterior to posterior, from a mesodermal band or bands. We propose the hypothesis, supported by all the existing data from this and other studies, that the anterior 15 seg- ments in Cluietopterus are formed by subdivision of exist- ing anlage, rather than by sequential addition from a growth zone. The segments B1-B5 are formed first, at stage L4, by subdivision of Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-larval-ontogeny-329-niban-et-lt-1997-our-observations-never-give-the-impres-sion-that-these-segmental-rudiments-are-produced-sequen-tially-anterior-to-posterior-from-a-mesodermal-band-or-bands-we-propose-the-hypothesis-supported-by-all-the-existing-data-from-this-and-other-studies-that-the-anterior-15-seg-ments-in-cluietopterus-are-formed-by-subdivision-of-exist-ing-anlage-rather-than-by-sequential-addition-from-a-growth-zone-the-segments-b1-b5-are-formed-first-at-stage-l4-by-subdivision-of-image234630286.htmlRMRHM992–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 329 niban et <//., 1997). Our observations never give the impres- sion that these segmental rudiments are produced sequen- tially, anterior to posterior, from a mesodermal band or bands. We propose the hypothesis, supported by all the existing data from this and other studies, that the anterior 15 seg- ments in Cluietopterus are formed by subdivision of exist- ing anlage, rather than by sequential addition from a growth zone. The segments B1-B5 are formed first, at stage L4, by subdivision of
. The biology of marine animals. Marine animals; Physiology, Comparative. Aliform notopodium Dorsal tubercle. Fig. 13.2. Chaetopterus variopedatus, a Polychaete that Discharges a Luminous Secretion {Left) dorsal view of the animal; (right) animal luminescing. these cells are yellow granules of luciferin and small colourless granules of luciferase, both of which dissolve when extruded into sea water. In addi- tion, mucus cells are present, which may discharge a mucous carrier for the luminescent secretion (50). Luminescent copepods such as Metridia, Oncaea and Corycaeus pour forth a luminescent Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-marine-animals-marine-animals-physiology-comparative-aliform-notopodium-dorsal-tubercle-fig-132-chaetopterus-variopedatus-a-polychaete-that-discharges-a-luminous-secretion-left-dorsal-view-of-the-animal-right-animal-luminescing-these-cells-are-yellow-granules-of-luciferin-and-small-colourless-granules-of-luciferase-both-of-which-dissolve-when-extruded-into-sea-water-in-addi-tion-mucus-cells-are-present-which-may-discharge-a-mucous-carrier-for-the-luminescent-secretion-50-luminescent-copepods-such-as-metridia-oncaea-and-corycaeus-pour-forth-a-luminescent-image234601638.htmlRMRHK0NX–. The biology of marine animals. Marine animals; Physiology, Comparative. Aliform notopodium Dorsal tubercle. Fig. 13.2. Chaetopterus variopedatus, a Polychaete that Discharges a Luminous Secretion {Left) dorsal view of the animal; (right) animal luminescing. these cells are yellow granules of luciferin and small colourless granules of luciferase, both of which dissolve when extruded into sea water. In addi- tion, mucus cells are present, which may discharge a mucous carrier for the luminescent secretion (50). Luminescent copepods such as Metridia, Oncaea and Corycaeus pour forth a luminescent
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 169 SER.1ES C Picric Varied, Acetic constant Picric" luilhout Acetic 1% Acetic without Picric. THE AMOUNTS OF PICRIC AND ACETIC ACIDS dilution experiment are included for comparison (Set D). The slide-making procedure was standard. Result: Only under a very narrow set of conditions are centrioles demonstrated and rays fixed in an undulating and very coarse con- figuration.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili Stock Photo](https://c8.alamy.com/comp/RHMTFK/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-169-ser1es-c-picric-varied-acetic-constant-picricquot-luilhout-acetic-1-acetic-without-picric-the-amounts-of-picric-and-acetic-acids-dilution-experiment-are-included-for-comparison-set-d-the-slide-making-procedure-was-standard-result-only-under-a-very-narrow-set-of-conditions-are-centrioles-demonstrated-and-rays-fixed-in-an-undulating-and-very-coarse-con-figuration-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readabili-RHMTFK.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 169 SER.1ES C Picric Varied, Acetic constant Picric" luilhout Acetic 1% Acetic without Picric. THE AMOUNTS OF PICRIC AND ACETIC ACIDS dilution experiment are included for comparison (Set D). The slide-making procedure was standard. Result: Only under a very narrow set of conditions are centrioles demonstrated and rays fixed in an undulating and very coarse con- figuration.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 169 SER.1ES C Picric Varied, Acetic constant Picric" luilhout Acetic 1% Acetic without Picric. THE AMOUNTS OF PICRIC AND ACETIC ACIDS dilution experiment are included for comparison (Set D). The slide-making procedure was standard. Result: Only under a very narrow set of conditions are centrioles demonstrated and rays fixed in an undulating and very coarse con- figuration.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-169-ser1es-c-picric-varied-acetic-constant-picricquot-luilhout-acetic-1-acetic-without-picric-the-amounts-of-picric-and-acetic-acids-dilution-experiment-are-included-for-comparison-set-d-the-slide-making-procedure-was-standard-result-only-under-a-very-narrow-set-of-conditions-are-centrioles-demonstrated-and-rays-fixed-in-an-undulating-and-very-coarse-con-figuration-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readabili-image234642231.htmlRMRHMTFK–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 169 SER.1ES C Picric Varied, Acetic constant Picric" luilhout Acetic 1% Acetic without Picric. THE AMOUNTS OF PICRIC AND ACETIC ACIDS dilution experiment are included for comparison (Set D). The slide-making procedure was standard. Result: Only under a very narrow set of conditions are centrioles demonstrated and rays fixed in an undulating and very coarse con- figuration.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili
![. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 211 ration divisions do not involve the sperm-centrosomes, but are separate and independent of them. The first maturation amphiaster in certain eggs, e.g., Thalassema, Nereis, and Myzo- stoma, is formed only after the sperm enters, and yet its cen- trosomes are not brought in by the sperm nor do they arise near it. In Chaetopterus, on the other hand, a complete amphiaster with centrosomes, centrospheres, astral rays, and spindle fibers is developed and remains for Stock Photo](https://c8.alamy.com/comp/RHM46H/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-the-function-of-the-centrosome-211-ration-divisions-do-not-involve-the-sperm-centrosomes-but-are-separate-and-independent-of-them-the-first-maturation-amphiaster-in-certain-eggs-eg-thalassema-nereis-and-myzo-stoma-is-formed-only-after-the-sperm-enters-and-yet-its-cen-trosomes-are-not-brought-in-by-the-sperm-nor-do-they-arise-near-it-in-chaetopterus-on-the-other-hand-a-complete-amphiaster-with-centrosomes-centrospheres-astral-rays-and-spindle-fibers-is-developed-and-remains-for-RHM46H.jpg ". Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 211 ration divisions do not involve the sperm-centrosomes, but are separate and independent of them. The first maturation amphiaster in certain eggs, e.g., Thalassema, Nereis, and Myzo- stoma, is formed only after the sperm enters, and yet its cen- trosomes are not brought in by the sperm nor do they arise near it. In Chaetopterus, on the other hand, a complete amphiaster with centrosomes, centrospheres, astral rays, and spindle fibers is developed and remains for Stock Photo")
. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 211 ration divisions do not involve the sperm-centrosomes, but are separate and independent of them. The first maturation amphiaster in certain eggs, e.g., Thalassema, Nereis, and Myzo- stoma, is formed only after the sperm enters, and yet its cen- trosomes are not brought in by the sperm nor do they arise near it. In Chaetopterus, on the other hand, a complete amphiaster with centrosomes, centrospheres, astral rays, and spindle fibers is developed and remains for Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-the-function-of-the-centrosome-211-ration-divisions-do-not-involve-the-sperm-centrosomes-but-are-separate-and-independent-of-them-the-first-maturation-amphiaster-in-certain-eggs-eg-thalassema-nereis-and-myzo-stoma-is-formed-only-after-the-sperm-enters-and-yet-its-cen-trosomes-are-not-brought-in-by-the-sperm-nor-do-they-arise-near-it-in-chaetopterus-on-the-other-hand-a-complete-amphiaster-with-centrosomes-centrospheres-astral-rays-and-spindle-fibers-is-developed-and-remains-for-image234626297.htmlRMRHM46H–. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. THE FUNCTION OF THE CENTROSOME. 211 ration divisions do not involve the sperm-centrosomes, but are separate and independent of them. The first maturation amphiaster in certain eggs, e.g., Thalassema, Nereis, and Myzo- stoma, is formed only after the sperm enters, and yet its cen- trosomes are not brought in by the sperm nor do they arise near it. In Chaetopterus, on the other hand, a complete amphiaster with centrosomes, centrospheres, astral rays, and spindle fibers is developed and remains for
. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAIv SURVEY OF WOODS HOLE AND VICINITY. 28 = CHART OF VINEYARD SOUND AND BUZZARDS BAY SHOWING DISTRIBUTION OF SPECIES *)qc NEW BEDFORD®. Chart 67.—Chaetopterus pergamentaceus (tubes only).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Sumner, Francis Bertody, 1874-; Osburn, Raymond C. (Raymond Carroll), 1872-1955; Cole, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/a-biological-survey-of-the-waters-of-woods-hole-and-vicinity-marine-animals-marine-plants-biologicaiv-survey-of-woods-hole-and-vicinity-28-=-chart-of-vineyard-sound-and-buzzards-bay-showing-distribution-of-species-qc-new-bedford-chart-67chaetopterus-pergamentaceus-tubes-only-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-sumner-francis-bertody-1874-osburn-raymond-c-raymond-carroll-1872-1955-cole-image237971804.htmlRMRR4FD0–. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAIv SURVEY OF WOODS HOLE AND VICINITY. 28 = CHART OF VINEYARD SOUND AND BUZZARDS BAY SHOWING DISTRIBUTION OF SPECIES *)qc NEW BEDFORD®. Chart 67.—Chaetopterus pergamentaceus (tubes only).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Sumner, Francis Bertody, 1874-; Osburn, Raymond C. (Raymond Carroll), 1872-1955; Cole,
. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. FIRST MATURATION D IVISION- SEGOND MATURATION DIVISION- ENTRANCE OF SPERM. Fig. 137. Maturation divisions of the oocyte relative to time of sperm entrance. (A) Sperm enters the primary oocyte before maturation divisions. In some, e.g., Nereis, Thalassema, Ascaris, Platynereis, Myzostoma, etc., the sperm enters before the germinal vesicle breaks down; in Styela, Chaetopterus, pigeon, etc., the first maturation spindle is formed or forming; in the d Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/comparative-embryology-of-the-vertebrates-with-2057-drawings-and-photos-grouped-as-380-illus-vertebrates-embryology-comparative-embryology-first-maturation-d-ivision-segond-maturation-division-entrance-of-sperm-fig-137-maturation-divisions-of-the-oocyte-relative-to-time-of-sperm-entrance-a-sperm-enters-the-primary-oocyte-before-maturation-divisions-in-some-eg-nereis-thalassema-ascaris-platynereis-myzostoma-etc-the-sperm-enters-before-the-germinal-vesicle-breaks-down-in-styela-chaetopterus-pigeon-etc-the-first-maturation-spindle-is-formed-or-forming-in-the-d-image232650465.htmlRMREE415–. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. FIRST MATURATION D IVISION- SEGOND MATURATION DIVISION- ENTRANCE OF SPERM. Fig. 137. Maturation divisions of the oocyte relative to time of sperm entrance. (A) Sperm enters the primary oocyte before maturation divisions. In some, e.g., Nereis, Thalassema, Ascaris, Platynereis, Myzostoma, etc., the sperm enters before the germinal vesicle breaks down; in Styela, Chaetopterus, pigeon, etc., the first maturation spindle is formed or forming; in the d
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. >J 'C :*V« '^"u THE EFFECTS OF CENTRIFUGING ON THE POLAR SPINDLES OF THE EGG OF CHAETOPTERUS AND CUMINGIA T. H. MORGAN (From the William G. Kcrckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena, California) The factors involved in the movement of the maturation spindle to the pole of the egg are obscure and have been little commented on. In many eggs it has been shown that the mitotic rays may extend through almost the entire polar hemisphere. In such eggs the axis of the s Stock Photo](https://c8.alamy.com/comp/RHP20G/the-biological-bulletin-biology-zoology-biology-marine-biology-gtj-c-v-quotu-the-effects-of-centrifuging-on-the-polar-spindles-of-the-egg-of-chaetopterus-and-cumingia-t-h-morgan-from-the-william-g-kcrckhoff-laboratories-of-the-biological-sciences-california-institute-of-technology-pasadena-california-the-factors-involved-in-the-movement-of-the-maturation-spindle-to-the-pole-of-the-egg-are-obscure-and-have-been-little-commented-on-in-many-eggs-it-has-been-shown-that-the-mitotic-rays-may-extend-through-almost-the-entire-polar-hemisphere-in-such-eggs-the-axis-of-the-s-RHP20G.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. >J 'C :*V« '^"u THE EFFECTS OF CENTRIFUGING ON THE POLAR SPINDLES OF THE EGG OF CHAETOPTERUS AND CUMINGIA T. H. MORGAN (From the William G. Kcrckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena, California) The factors involved in the movement of the maturation spindle to the pole of the egg are obscure and have been little commented on. In many eggs it has been shown that the mitotic rays may extend through almost the entire polar hemisphere. In such eggs the axis of the s Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. >J 'C :*V« '^"u THE EFFECTS OF CENTRIFUGING ON THE POLAR SPINDLES OF THE EGG OF CHAETOPTERUS AND CUMINGIA T. H. MORGAN (From the William G. Kcrckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena, California) The factors involved in the movement of the maturation spindle to the pole of the egg are obscure and have been little commented on. In many eggs it has been shown that the mitotic rays may extend through almost the entire polar hemisphere. In such eggs the axis of the s Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-gtj-c-v-quotu-the-effects-of-centrifuging-on-the-polar-spindles-of-the-egg-of-chaetopterus-and-cumingia-t-h-morgan-from-the-william-g-kcrckhoff-laboratories-of-the-biological-sciences-california-institute-of-technology-pasadena-california-the-factors-involved-in-the-movement-of-the-maturation-spindle-to-the-pole-of-the-egg-are-obscure-and-have-been-little-commented-on-in-many-eggs-it-has-been-shown-that-the-mitotic-rays-may-extend-through-almost-the-entire-polar-hemisphere-in-such-eggs-the-axis-of-the-s-image234668464.htmlRMRHP20G–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. >J 'C :*V« '^"u THE EFFECTS OF CENTRIFUGING ON THE POLAR SPINDLES OF THE EGG OF CHAETOPTERUS AND CUMINGIA T. H. MORGAN (From the William G. Kcrckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena, California) The factors involved in the movement of the maturation spindle to the pole of the egg are obscure and have been little commented on. In many eggs it has been shown that the mitotic rays may extend through almost the entire polar hemisphere. In such eggs the axis of the s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 112 W. A. ANDERSON AND W. R. ECKBERG. FIGURE 1. Surface of an unfertilized egg of Chaetopterus. Note the three regions of the vitelline layer: I = inner dense layer, M = middle layer, G = granules comprising the outer layer. Note also that microvilli (MV) penetrate the vitelline layer completely. Also note the fibrillar jelly coat originating from the tips of the microvilli and the granules of the vitelline layer (arrows). Bar = 1 ^m. FIGURE 2. Tangential section of the vitelline layer and jelly coat of an unfertilized egg. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-112-w-a-anderson-and-w-r-eckberg-figure-1-surface-of-an-unfertilized-egg-of-chaetopterus-note-the-three-regions-of-the-vitelline-layer-i-=-inner-dense-layer-m-=-middle-layer-g-=-granules-comprising-the-outer-layer-note-also-that-microvilli-mv-penetrate-the-vitelline-layer-completely-also-note-the-fibrillar-jelly-coat-originating-from-the-tips-of-the-microvilli-and-the-granules-of-the-vitelline-layer-arrows-bar-=-1-m-figure-2-tangential-section-of-the-vitelline-layer-and-jelly-coat-of-an-unfertilized-egg-image234647619.htmlRMRHN3C3–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 112 W. A. ANDERSON AND W. R. ECKBERG. FIGURE 1. Surface of an unfertilized egg of Chaetopterus. Note the three regions of the vitelline layer: I = inner dense layer, M = middle layer, G = granules comprising the outer layer. Note also that microvilli (MV) penetrate the vitelline layer completely. Also note the fibrillar jelly coat originating from the tips of the microvilli and the granules of the vitelline layer (arrows). Bar = 1 ^m. FIGURE 2. Tangential section of the vitelline layer and jelly coat of an unfertilized egg.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS FERTILIZATION 115. M. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Labora Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-fertilization-115-m-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-marine-biological-labora-image234647591.htmlRMRHN3B3–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS FERTILIZATION 115. M. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Labora
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 397 PLATE IV. 56 49 ^^? -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-development-of-half-eggs-of-chaetopterus-397-plate-iv-56-49-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-image234641071.htmlRMRHMR27–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 397 PLATE IV. 56 49 ^^? -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole,
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 161 and became transparent for a moment; in a third the same situation was produced but maintained for a longer time; finally, one slide was so extremely overheated that the ribbon not only melted but bubbled and gave off vapors. In the latter case a number of the eggs have a peculiar glassy appearance in the region of the spindle, the inner zone of the astral rays, and the central body area (Fig. 8). This type, pro- duced by faculty technique, is readily recognized and could not be con- fused wit Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-161-and-became-transparent-for-a-moment-in-a-third-the-same-situation-was-produced-but-maintained-for-a-longer-time-finally-one-slide-was-so-extremely-overheated-that-the-ribbon-not-only-melted-but-bubbled-and-gave-off-vapors-in-the-latter-case-a-number-of-the-eggs-have-a-peculiar-glassy-appearance-in-the-region-of-the-spindle-the-inner-zone-of-the-astral-rays-and-the-central-body-area-fig-8-this-type-pro-duced-by-faculty-technique-is-readily-recognized-and-could-not-be-con-fused-wit-image234642262.htmlRMRHMTGP–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 161 and became transparent for a moment; in a third the same situation was produced but maintained for a longer time; finally, one slide was so extremely overheated that the ribbon not only melted but bubbled and gave off vapors. In the latter case a number of the eggs have a peculiar glassy appearance in the region of the spindle, the inner zone of the astral rays, and the central body area (Fig. 8). This type, pro- duced by faculty technique, is readily recognized and could not be con- fused wit
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 231 VL t. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological La Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-localization-in-chaetopterus-231-vl-t-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-marine-biological-la-image234648040.htmlRMRHN3Y4–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 231 VL t. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological La
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ANTIMITOTIC SUBSTANCES FROM OVARIES 163 we were soon led to believe that the starfish ovary extract which had so drastic a liquefying action and so strong an antimitotic effect on invertebrate marine eggs, was rather powerless on vertebrate cells and tissues. The starfish ovary extract acts on starfish eggs, Chaetopterus eggs, eggs of the sea urchin Arbacia and eggs of the clam Spisula; but we found no very great antimitotic activity on frog eggs, and the antimitotic action of the extract on embryo mouse cells in tissue cult Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-antimitotic-substances-from-ovaries-163-we-were-soon-led-to-believe-that-the-starfish-ovary-extract-which-had-so-drastic-a-liquefying-action-and-so-strong-an-antimitotic-effect-on-invertebrate-marine-eggs-was-rather-powerless-on-vertebrate-cells-and-tissues-the-starfish-ovary-extract-acts-on-starfish-eggs-chaetopterus-eggs-eggs-of-the-sea-urchin-arbacia-and-eggs-of-the-clam-spisula-but-we-found-no-very-great-antimitotic-activity-on-frog-eggs-and-the-antimitotic-action-of-the-extract-on-embryo-mouse-cells-in-tissue-cult-image234622916.htmlRMRHKYWT–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ANTIMITOTIC SUBSTANCES FROM OVARIES 163 we were soon led to believe that the starfish ovary extract which had so drastic a liquefying action and so strong an antimitotic effect on invertebrate marine eggs, was rather powerless on vertebrate cells and tissues. The starfish ovary extract acts on starfish eggs, Chaetopterus eggs, eggs of the sea urchin Arbacia and eggs of the clam Spisula; but we found no very great antimitotic activity on frog eggs, and the antimitotic action of the extract on embryo mouse cells in tissue cult
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 399 PLATE V 63. 68. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-development-of-half-eggs-of-chaetopterus-399-plate-v-63-68-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-image234640994.htmlRMRHMPYE–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 399 PLATE V 63. 68. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY Ihc 321 pyg at pyg. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Bio Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-larval-ontogeny-ihc-321-pyg-at-pyg-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-marine-bio-image234630557.htmlRMRHM9JN–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY Ihc 321 pyg at pyg. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Bio
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 173 When the reagent is at 1°C, the same two types (IB and 25) occur in about the same proportions as when the eggs are fixed under ordinary conditions at room temperature. But at 95°C. all asters have vague rippled rays and disrupted centers (ID). In other words, chill- ing the fixative produces no deviation from the usual condition, but heating it causes changes (Chart 5). The relation between ray struc- ture and central body structure is once more apparent. ILvpcr'uneni 9. The Effects of 1'dryi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-173-when-the-reagent-is-at-1c-the-same-two-types-ib-and-25-occur-in-about-the-same-proportions-as-when-the-eggs-are-fixed-under-ordinary-conditions-at-room-temperature-but-at-95c-all-asters-have-vague-rippled-rays-and-disrupted-centers-id-in-other-words-chill-ing-the-fixative-produces-no-deviation-from-the-usual-condition-but-heating-it-causes-changes-chart-5-the-relation-between-ray-struc-ture-and-central-body-structure-is-once-more-apparent-ilvpcruneni-9-the-effects-of-1dryi-image234642202.htmlRMRHMTEJ–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 173 When the reagent is at 1°C, the same two types (IB and 25) occur in about the same proportions as when the eggs are fixed under ordinary conditions at room temperature. But at 95°C. all asters have vague rippled rays and disrupted centers (ID). In other words, chill- ing the fixative produces no deviation from the usual condition, but heating it causes changes (Chart 5). The relation between ray struc- ture and central body structure is once more apparent. ILvpcr'uneni 9. The Effects of 1'dryi
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL AND DEVELOPMENTAL BIOLOGY 213. Figure 1. Live Chaetopterus oocytes obsen<ed with the spinning centrifuge polarizing microscope (CPM). The images were taken from video sequences that were shown at the General Scientific Meetings. The %-force in all panels points to the right: i.e.. the left side is the centripetal ciul ("top of the cell" where the lighter components of the cell accumulate). {A. B) Oocyte shed in calcium-free seawater and centrifuged at about 5600 RPM for over half an hour. (C, D) Oocvte expo Stock Photo](https://c8.alamy.com/comp/RHMDPW/the-biological-bulletin-biology-zoology-biology-marine-biology-cell-and-developmental-biology-213-figure-1-live-chaetopterus-oocytes-obsenlted-with-the-spinning-centrifuge-polarizing-microscope-cpm-the-images-were-taken-from-video-sequences-that-were-shown-at-the-general-scientific-meetings-the-force-in-all-panels-points-to-the-right-ie-the-left-side-is-the-centripetal-ciul-quottop-of-the-cellquot-where-the-lighter-components-of-the-cell-accumulate-a-b-oocyte-shed-in-calcium-free-seawater-and-centrifuged-at-about-5600-rpm-for-over-half-an-hour-c-d-oocvte-expo-RHMDPW.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL AND DEVELOPMENTAL BIOLOGY 213. Figure 1. Live Chaetopterus oocytes obsen<ed with the spinning centrifuge polarizing microscope (CPM). The images were taken from video sequences that were shown at the General Scientific Meetings. The %-force in all panels points to the right: i.e.. the left side is the centripetal ciul ("top of the cell" where the lighter components of the cell accumulate). {A. B) Oocyte shed in calcium-free seawater and centrifuged at about 5600 RPM for over half an hour. (C, D) Oocvte expo Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL AND DEVELOPMENTAL BIOLOGY 213. Figure 1. Live Chaetopterus oocytes obsen<ed with the spinning centrifuge polarizing microscope (CPM). The images were taken from video sequences that were shown at the General Scientific Meetings. The %-force in all panels points to the right: i.e.. the left side is the centripetal ciul ("top of the cell" where the lighter components of the cell accumulate). {A. B) Oocyte shed in calcium-free seawater and centrifuged at about 5600 RPM for over half an hour. (C, D) Oocvte expo Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-cell-and-developmental-biology-213-figure-1-live-chaetopterus-oocytes-obsenlted-with-the-spinning-centrifuge-polarizing-microscope-cpm-the-images-were-taken-from-video-sequences-that-were-shown-at-the-general-scientific-meetings-the-force-in-all-panels-points-to-the-right-ie-the-left-side-is-the-centripetal-ciul-quottop-of-the-cellquot-where-the-lighter-components-of-the-cell-accumulate-a-b-oocyte-shed-in-calcium-free-seawater-and-centrifuged-at-about-5600-rpm-for-over-half-an-hour-c-d-oocvte-expo-image234633809.htmlRMRHMDPW–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL AND DEVELOPMENTAL BIOLOGY 213. Figure 1. Live Chaetopterus oocytes obsen<ed with the spinning centrifuge polarizing microscope (CPM). The images were taken from video sequences that were shown at the General Scientific Meetings. The %-force in all panels points to the right: i.e.. the left side is the centripetal ciul ("top of the cell" where the lighter components of the cell accumulate). {A. B) Oocyte shed in calcium-free seawater and centrifuged at about 5600 RPM for over half an hour. (C, D) Oocvte expo
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 19 61%. 12. 39%, ID JO 10O7, CHART 5. THE EFFECTS OF VARYING THE TEMPERATURE OF BOVERI'S REAGENT Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after fixation in Boveri's reagent at 1° C. and at 95° C. The slide-making procedure was standard. Result: Central body structure is related to ray struc- ture. At low temperatures the central bodies and ray configurations are the same as those occurring at ordinary temperatures ; at high temperatures the situation is modified. experiment shows Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-19-61-12-39-id-jo-10o7-chart-5-the-effects-of-varying-the-temperature-of-boveris-reagent-central-bodies-were-studied-in-metaphase-first-cleavage-figures-in-chaetopterus-eggs-after-fixation-in-boveris-reagent-at-1-c-and-at-95-c-the-slide-making-procedure-was-standard-result-central-body-structure-is-related-to-ray-struc-ture-at-low-temperatures-the-central-bodies-and-ray-configurations-are-the-same-as-those-occurring-at-ordinary-temperatures-at-high-temperatures-the-situation-is-modified-experiment-shows-image234642192.htmlRMRHMTE8–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 19 61%. 12. 39%, ID JO 10O7, CHART 5. THE EFFECTS OF VARYING THE TEMPERATURE OF BOVERI'S REAGENT Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after fixation in Boveri's reagent at 1° C. and at 95° C. The slide-making procedure was standard. Result: Central body structure is related to ray struc- ture. At low temperatures the central bodies and ray configurations are the same as those occurring at ordinary temperatures ; at high temperatures the situation is modified. experiment shows
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 387 PLATE I :. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : M Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-development-of-half-eggs-of-chaetopterus-387-plate-i-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-m-image234668426.htmlRMRHP1Y6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 387 PLATE I :. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : M
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 323 Ocelli: 2; one lateral pair Reference*: Henry (1986) fig. 3b-c; Bonch-Bruevich and Malakhov (1987) fig. 1 By this stage gastrulation is complete, forming a tripartite gut. A ventrally opening ciliated stomodeum is visible an- teriorly. The more medial stomach occupies about half the volume of the larva, and a much smaller intestine is located just anterior to the pygidium. The anus opens dorsally. The gut is functional at this time, as evidenced by algal particles in the stomach. A pair of st Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-larval-ontogeny-323-ocelli-2-one-lateral-pair-reference-henry-1986-fig-3b-c-bonch-bruevich-and-malakhov-1987-fig-1-by-this-stage-gastrulation-is-complete-forming-a-tripartite-gut-a-ventrally-opening-ciliated-stomodeum-is-visible-an-teriorly-the-more-medial-stomach-occupies-about-half-the-volume-of-the-larva-and-a-much-smaller-intestine-is-located-just-anterior-to-the-pygidium-the-anus-opens-dorsally-the-gut-is-functional-at-this-time-as-evidenced-by-algal-particles-in-the-stomach-a-pair-of-st-image234630458.htmlRMRHM9F6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 323 Ocelli: 2; one lateral pair Reference*: Henry (1986) fig. 3b-c; Bonch-Bruevich and Malakhov (1987) fig. 1 By this stage gastrulation is complete, forming a tripartite gut. A ventrally opening ciliated stomodeum is visible an- teriorly. The more medial stomach occupies about half the volume of the larva, and a much smaller intestine is located just anterior to the pygidium. The anus opens dorsally. The gut is functional at this time, as evidenced by algal particles in the stomach. A pair of st
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. WATER-PUMPING BY CHAETOPTERUS 145 SIDE VIEW TOP VIEW. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marin Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-water-pumping-by-chaetopterus-145-side-view-top-view-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-marin-image234650848.htmlRMRHN7FC–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. WATER-PUMPING BY CHAETOPTERUS 145 SIDE VIEW TOP VIEW. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marin
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 393 PLATE III. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Mar Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-development-of-half-eggs-of-chaetopterus-393-plate-iii-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-mar-image234641256.htmlRMRHMR8T–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 393 PLATE III. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Mar
![. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. FiG. 4. — Diagram indicating the different stages of maturation attained by the eggs of various animals before the sperm enters. A, Nereis, Tlialassema; B, Chaetopterus and some other marine annelids; C, frog, Axolotl, lamprey ; D, sea-urchin. phase, if the egg is left unfertilized in sea-water; and the same appears to be true of many other marine annelids. This elab- orate machinery of mitotic division is immediately set in motion upon the entrance of the spermatozoon, though the sperm and its c Stock Photo](https://c8.alamy.com/comp/RHM454/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-fig-4-diagram-indicating-the-different-stages-of-maturation-attained-by-the-eggs-of-various-animals-before-the-sperm-enters-a-nereis-tlialassema-b-chaetopterus-and-some-other-marine-annelids-c-frog-axolotl-lamprey-d-sea-urchin-phase-if-the-egg-is-left-unfertilized-in-sea-water-and-the-same-appears-to-be-true-of-many-other-marine-annelids-this-elab-orate-machinery-of-mitotic-division-is-immediately-set-in-motion-upon-the-entrance-of-the-spermatozoon-though-the-sperm-and-its-c-RHM454.jpg ". Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. FiG. 4. — Diagram indicating the different stages of maturation attained by the eggs of various animals before the sperm enters. A, Nereis, Tlialassema; B, Chaetopterus and some other marine annelids; C, frog, Axolotl, lamprey ; D, sea-urchin. phase, if the egg is left unfertilized in sea-water; and the same appears to be true of many other marine annelids. This elab- orate machinery of mitotic division is immediately set in motion upon the entrance of the spermatozoon, though the sperm and its c Stock Photo")
. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. FiG. 4. — Diagram indicating the different stages of maturation attained by the eggs of various animals before the sperm enters. A, Nereis, Tlialassema; B, Chaetopterus and some other marine annelids; C, frog, Axolotl, lamprey ; D, sea-urchin. phase, if the egg is left unfertilized in sea-water; and the same appears to be true of many other marine annelids. This elab- orate machinery of mitotic division is immediately set in motion upon the entrance of the spermatozoon, though the sperm and its c Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/biological-lectures-delivered-at-the-marine-biological-laboratory-of-woods-holl-sic-biology-fig-4-diagram-indicating-the-different-stages-of-maturation-attained-by-the-eggs-of-various-animals-before-the-sperm-enters-a-nereis-tlialassema-b-chaetopterus-and-some-other-marine-annelids-c-frog-axolotl-lamprey-d-sea-urchin-phase-if-the-egg-is-left-unfertilized-in-sea-water-and-the-same-appears-to-be-true-of-many-other-marine-annelids-this-elab-orate-machinery-of-mitotic-division-is-immediately-set-in-motion-upon-the-entrance-of-the-spermatozoon-though-the-sperm-and-its-c-image234626256.htmlRMRHM454–. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. FiG. 4. — Diagram indicating the different stages of maturation attained by the eggs of various animals before the sperm enters. A, Nereis, Tlialassema; B, Chaetopterus and some other marine annelids; C, frog, Axolotl, lamprey ; D, sea-urchin. phase, if the egg is left unfertilized in sea-water; and the same appears to be true of many other marine annelids. This elab- orate machinery of mitotic division is immediately set in motion upon the entrance of the spermatozoon, though the sperm and its c
. The biology of marine animals. Marine animals; Physiology, Comparative. Muscle masses CO.) Fig. 11.2. Intestinal Coloration of Chaetopterus variopedatus (a) Transverse section through the mid-body; the dark green intestinal wall is shown in heavy black; (b) epithelial cells of the intestinal wall with pigmented spherules. (After Lankester, 1897-98.) sometimes bring about marked differences between red and white muscles; for example, in the teleosts Luvarus and Hippocampus. In the polychaete Myxicola infundibulum chlorocruorin imparts a greenish tint to the inner layers of the animal's tube. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-marine-animals-marine-animals-physiology-comparative-muscle-masses-co-fig-112-intestinal-coloration-of-chaetopterus-variopedatus-a-transverse-section-through-the-mid-body-the-dark-green-intestinal-wall-is-shown-in-heavy-black-b-epithelial-cells-of-the-intestinal-wall-with-pigmented-spherules-after-lankester-1897-98-sometimes-bring-about-marked-differences-between-red-and-white-muscles-for-example-in-the-teleosts-luvarus-and-hippocampus-in-the-polychaete-myxicola-infundibulum-chlorocruorin-imparts-a-greenish-tint-to-the-inner-layers-of-the-animals-tube-image234602414.htmlRMRHK1NJ–. The biology of marine animals. Marine animals; Physiology, Comparative. Muscle masses CO.) Fig. 11.2. Intestinal Coloration of Chaetopterus variopedatus (a) Transverse section through the mid-body; the dark green intestinal wall is shown in heavy black; (b) epithelial cells of the intestinal wall with pigmented spherules. (After Lankester, 1897-98.) sometimes bring about marked differences between red and white muscles; for example, in the teleosts Luvarus and Hippocampus. In the polychaete Myxicola infundibulum chlorocruorin imparts a greenish tint to the inner layers of the animal's tube.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 401 PLATE VI. ' 85. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-development-of-half-eggs-of-chaetopterus-401-plate-vi-85-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-image234640829.htmlRMRHMPNH–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DEVELOPMENT OF HALF-EGGS OF CHAETOPTERUS 401 PLATE VI. ' 85. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LUMINESCENCE CONTROL IN CHAETOPTERUS 587. Stimulation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Mari Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-luminescence-control-in-chaetopterus-587-stimulation-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-hole-mass-mari-image234635003.htmlRMRHMF9F–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LUMINESCENCE CONTROL IN CHAETOPTERUS 587. Stimulation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Mari
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES Fixation and Slide-making 151 The picro-acetic reagent employed in the experiments was made according to Boveri's formula (1887, p. 11) : 99 parts of a saturated solution of picric acid which has been diluted with two volumes of water, and one part of glacial acetic acid. In experiments where this formula was modified the details are given in each case. Unless other- wise stated, eggs were run up in the usual manner, sectioned at a thickness of 5 p, and stained in Heidenhain's hsematoxylin. Making Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-fixation-and-slide-making-151-the-picro-acetic-reagent-employed-in-the-experiments-was-made-according-to-boveris-formula-1887-p-11-99-parts-of-a-saturated-solution-of-picric-acid-which-has-been-diluted-with-two-volumes-of-water-and-one-part-of-glacial-acetic-acid-in-experiments-where-this-formula-was-modified-the-details-are-given-in-each-case-unless-other-wise-stated-eggs-were-run-up-in-the-usual-manner-sectioned-at-a-thickness-of-5-p-and-stained-in-heidenhains-hsematoxylin-making-image234642387.htmlRMRHMTN7–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES Fixation and Slide-making 151 The picro-acetic reagent employed in the experiments was made according to Boveri's formula (1887, p. 11) : 99 parts of a saturated solution of picric acid which has been diluted with two volumes of water, and one part of glacial acetic acid. In experiments where this formula was modified the details are given in each case. Unless other- wise stated, eggs were run up in the usual manner, sectioned at a thickness of 5 p, and stained in Heidenhain's hsematoxylin. Making
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 177 CLASSES OF CENTRAL BODIES 1 Disrupted Empty or .Scattered 2 Even </7ctf demarked) 3 Dense (not demarked) 4 Slightly Demarked Without Centriole SUghtly Demarked With Centriole single or doubk CLASSES OF FLAYS A B C D Very Coarse Med- Coarse Delicate Vague E Absent. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Bi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-central-bodies-177-classes-of-central-bodies-1-disrupted-empty-or-scattered-2-even-lt7ctf-demarked-3-dense-not-demarked-4-slightly-demarked-without-centriole-sughtly-demarked-with-centriole-single-or-doubk-classes-of-flays-a-b-c-d-very-coarse-med-coarse-delicate-vague-e-absent-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-bi-image234642182.htmlRMRHMTDX–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS CENTRAL BODIES 177 CLASSES OF CENTRAL BODIES 1 Disrupted Empty or .Scattered 2 Even </7ctf demarked) 3 Dense (not demarked) 4 Slightly Demarked Without Centriole SUghtly Demarked With Centriole single or doubk CLASSES OF FLAYS A B C D Very Coarse Med- Coarse Delicate Vague E Absent. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Bi
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 28<x DONALD P. COSTELLO. FIGURE 9. Chaetopterus spermatozoa fixed in cacodylate-buffered glutaraldehyde. Sus- pension was later diluted with buffer wash. Note essentially straight tails; phase-contrast, 1280 X. FIGURE 10. Chaetopterus spermatozoa fixed in cacodylate-buffered glutaraldehyde, and later diluted with % PTA, pH 6.8. Note helically coiled tails; phase-contrast, 1280 X. plex is clearly involved in a stiffening function. The connectives could inhibit or prevent the sliding of singlets, relative to each other, th Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-28ltx-donald-p-costello-figure-9-chaetopterus-spermatozoa-fixed-in-cacodylate-buffered-glutaraldehyde-sus-pension-was-later-diluted-with-buffer-wash-note-essentially-straight-tails-phase-contrast-1280-x-figure-10-chaetopterus-spermatozoa-fixed-in-cacodylate-buffered-glutaraldehyde-and-later-diluted-with-pta-ph-68-note-helically-coiled-tails-phase-contrast-1280-x-plex-is-clearly-involved-in-a-stiffening-function-the-connectives-could-inhibit-or-prevent-the-sliding-of-singlets-relative-to-each-other-th-image234650877.htmlRMRHN7GD–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 28<x DONALD P. COSTELLO. FIGURE 9. Chaetopterus spermatozoa fixed in cacodylate-buffered glutaraldehyde. Sus- pension was later diluted with buffer wash. Note essentially straight tails; phase-contrast, 1280 X. FIGURE 10. Chaetopterus spermatozoa fixed in cacodylate-buffered glutaraldehyde, and later diluted with % PTA, pH 6.8. Note helically coiled tails; phase-contrast, 1280 X. plex is clearly involved in a stiffening function. The connectives could inhibit or prevent the sliding of singlets, relative to each other, th
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OSMOTIC RESPONSES OF CHAETOPTERUS 285 I20-- II5-- iio-- I05--. o .c O. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Ho Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-osmotic-responses-of-chaetopterus-285-i20-ii5-iio-i05-o-c-o-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biological-laboratory-woods-hole-mass-annual-report-190708-1952-lillie-frank-rattray-1870-1947-moore-carl-richard-1892-redfield-alfred-clarence-1890-1983-woods-ho-image234651389.htmlRMRHN86N–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OSMOTIC RESPONSES OF CHAETOPTERUS 285 I20-- II5-- iio-- I05--. o .c O. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Ho
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1C e-iiP^ ID. 5C If IE CHART 7. THE ASTRAL TYPES OCCURRING AFTER PICRO-ACETIC FIXATION Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after fixation with different modifications of a picro-acetic reagent and various changes in the slide-making procedure. Result: Central body structure is related to ray structure. If rays are rippled, centers are disrupted; if rays are undulating, but delicate or medium coarse, centers are usually even (or dense) cen- trosomes, undemarked from the ray ar Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-1c-e-iip-id-5c-if-ie-chart-7-the-astral-types-occurring-after-picro-acetic-fixation-central-bodies-were-studied-in-metaphase-first-cleavage-figures-in-chaetopterus-eggs-after-fixation-with-different-modifications-of-a-picro-acetic-reagent-and-various-changes-in-the-slide-making-procedure-result-central-body-structure-is-related-to-ray-structure-if-rays-are-rippled-centers-are-disrupted-if-rays-are-undulating-but-delicate-or-medium-coarse-centers-are-usually-even-or-dense-cen-trosomes-undemarked-from-the-ray-ar-image234642091.htmlRMRHMTAK–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1C e-iiP^ ID. 5C If IE CHART 7. THE ASTRAL TYPES OCCURRING AFTER PICRO-ACETIC FIXATION Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after fixation with different modifications of a picro-acetic reagent and various changes in the slide-making procedure. Result: Central body structure is related to ray structure. If rays are rippled, centers are disrupted; if rays are undulating, but delicate or medium coarse, centers are usually even (or dense) cen- trosomes, undemarked from the ray ar
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3O Afters Undulating. 57'Art* •ers CHART 1. THE RELATION BETWEEN RAY STRUCTURE AND CEN- TRAL BODY STRUCTURE UNDER OPTIMUM CONDITIONS Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after using Boveri's picro-acetic fixation, and the standard slide-making procedure. Result: Central body structure is related to ray structure: centers are " disrupted ", i.e., empty or containing scattered material, if rays are rippled in shape; centers are "even", i.e., homogeneously fil Stock Photo](https://c8.alamy.com/comp/RHMTH8/the-biological-bulletin-biology-zoology-biology-marine-biology-3o-afters-undulating-57art-ers-chart-1-the-relation-between-ray-structure-and-cen-tral-body-structure-under-optimum-conditions-central-bodies-were-studied-in-metaphase-first-cleavage-figures-in-chaetopterus-eggs-after-using-boveris-picro-acetic-fixation-and-the-standard-slide-making-procedure-result-central-body-structure-is-related-to-ray-structure-centers-are-quot-disrupted-quot-ie-empty-or-containing-scattered-material-if-rays-are-rippled-in-shape-centers-are-quotevenquot-ie-homogeneously-fil-RHMTH8.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3O Afters Undulating. 57'Art* •ers CHART 1. THE RELATION BETWEEN RAY STRUCTURE AND CEN- TRAL BODY STRUCTURE UNDER OPTIMUM CONDITIONS Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after using Boveri's picro-acetic fixation, and the standard slide-making procedure. Result: Central body structure is related to ray structure: centers are " disrupted ", i.e., empty or containing scattered material, if rays are rippled in shape; centers are "even", i.e., homogeneously fil Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3O Afters Undulating. 57'Art* •ers CHART 1. THE RELATION BETWEEN RAY STRUCTURE AND CEN- TRAL BODY STRUCTURE UNDER OPTIMUM CONDITIONS Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after using Boveri's picro-acetic fixation, and the standard slide-making procedure. Result: Central body structure is related to ray structure: centers are " disrupted ", i.e., empty or containing scattered material, if rays are rippled in shape; centers are "even", i.e., homogeneously fil Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-3o-afters-undulating-57art-ers-chart-1-the-relation-between-ray-structure-and-cen-tral-body-structure-under-optimum-conditions-central-bodies-were-studied-in-metaphase-first-cleavage-figures-in-chaetopterus-eggs-after-using-boveris-picro-acetic-fixation-and-the-standard-slide-making-procedure-result-central-body-structure-is-related-to-ray-structure-centers-are-quot-disrupted-quot-ie-empty-or-containing-scattered-material-if-rays-are-rippled-in-shape-centers-are-quotevenquot-ie-homogeneously-fil-image234642276.htmlRMRHMTH8–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3O Afters Undulating. 57'Art* •ers CHART 1. THE RELATION BETWEEN RAY STRUCTURE AND CEN- TRAL BODY STRUCTURE UNDER OPTIMUM CONDITIONS Central bodies were studied in metaphase first-cleavage figures in Chaetopterus eggs, after using Boveri's picro-acetic fixation, and the standard slide-making procedure. Result: Central body structure is related to ray structure: centers are " disrupted ", i.e., empty or containing scattered material, if rays are rippled in shape; centers are "even", i.e., homogeneously fil
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. WATER-PUMPING BY CHAETOPTERUS 143 AXIAL PARAMETERS POWER RECOVERY ,.. i—1 sec- LU E U u Q. LO. LU Z o LU (J U ib r vy r V FIGURE 9. Characteristic maximum axial displacements of the pump segment periphery during 3 consecutive pump cycles. Modal characteristics for radial displacements are shown in Figure 10. The displacements here are clearly asymmetric, with the centrifugal movement limited by the inner margin of the tube wall. Although the total distances moved radially by the margins of the piston segments are less th Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-water-pumping-by-chaetopterus-143-axial-parameters-power-recovery-i1-sec-lu-e-u-u-q-lo-lu-z-o-lu-j-u-ib-r-vy-r-v-figure-9-characteristic-maximum-axial-displacements-of-the-pump-segment-periphery-during-3-consecutive-pump-cycles-modal-characteristics-for-radial-displacements-are-shown-in-figure-10-the-displacements-here-are-clearly-asymmetric-with-the-centrifugal-movement-limited-by-the-inner-margin-of-the-tube-wall-although-the-total-distances-moved-radially-by-the-margins-of-the-piston-segments-are-less-th-image234650892.htmlRMRHN7H0–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. WATER-PUMPING BY CHAETOPTERUS 143 AXIAL PARAMETERS POWER RECOVERY ,.. i—1 sec- LU E U u Q. LO. LU Z o LU (J U ib r vy r V FIGURE 9. Characteristic maximum axial displacements of the pump segment periphery during 3 consecutive pump cycles. Modal characteristics for radial displacements are shown in Figure 10. The displacements here are clearly asymmetric, with the centrifugal movement limited by the inner margin of the tube wall. Although the total distances moved radially by the margins of the piston segments are less th
![. The biology of the cell surface. Cytology. / C^ /W y; i^^ Fi G. 30. -Surface changes in the egg of Mitrocoma attending sperm-entry (after MetschnikofF). that the vitelline membrane becomes separated. The sur- face-changes differ in quality: in eggs of Nereis a superficially located jelly is extruded; in the Chaetopterus-egg the obser- vable changes are less striking; in the egg of Amphioxus discrete bodies flow together and liquefy before the mem- brane separates widely from the egg] in sea-urchins' eggs the briefly enduring surface-changes are most violent. In order further to elucidate suc Stock Photo](https://c8.alamy.com/comp/RHK9ET/the-biology-of-the-cell-surface-cytology-c-w-y-i-fi-g-30-surface-changes-in-the-egg-of-mitrocoma-attending-sperm-entry-after-metschnikoff-that-the-vitelline-membrane-becomes-separated-the-sur-face-changes-differ-in-quality-in-eggs-of-nereis-a-superficially-located-jelly-is-extruded-in-the-chaetopterus-egg-the-obser-vable-changes-are-less-striking-in-the-egg-of-amphioxus-discrete-bodies-flow-together-and-liquefy-before-the-mem-brane-separates-widely-from-the-egg-in-sea-urchins-eggs-the-briefly-enduring-surface-changes-are-most-violent-in-order-further-to-elucidate-suc-RHK9ET.jpg ". The biology of the cell surface. Cytology. / C^ /W y; i^^ Fi G. 30. -Surface changes in the egg of Mitrocoma attending sperm-entry (after MetschnikofF). that the vitelline membrane becomes separated. The sur- face-changes differ in quality: in eggs of Nereis a superficially located jelly is extruded; in the Chaetopterus-egg the obser- vable changes are less striking; in the egg of Amphioxus discrete bodies flow together and liquefy before the mem- brane separates widely from the egg] in sea-urchins' eggs the briefly enduring surface-changes are most violent. In order further to elucidate suc Stock Photo")
. The biology of the cell surface. Cytology. / C^ /W y; i^^ Fi G. 30. -Surface changes in the egg of Mitrocoma attending sperm-entry (after MetschnikofF). that the vitelline membrane becomes separated. The sur- face-changes differ in quality: in eggs of Nereis a superficially located jelly is extruded; in the Chaetopterus-egg the obser- vable changes are less striking; in the egg of Amphioxus discrete bodies flow together and liquefy before the mem- brane separates widely from the egg] in sea-urchins' eggs the briefly enduring surface-changes are most violent. In order further to elucidate suc Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-cell-surface-cytology-c-w-y-i-fi-g-30-surface-changes-in-the-egg-of-mitrocoma-attending-sperm-entry-after-metschnikoff-that-the-vitelline-membrane-becomes-separated-the-sur-face-changes-differ-in-quality-in-eggs-of-nereis-a-superficially-located-jelly-is-extruded-in-the-chaetopterus-egg-the-obser-vable-changes-are-less-striking-in-the-egg-of-amphioxus-discrete-bodies-flow-together-and-liquefy-before-the-mem-brane-separates-widely-from-the-egg-in-sea-urchins-eggs-the-briefly-enduring-surface-changes-are-most-violent-in-order-further-to-elucidate-suc-image234608496.htmlRMRHK9ET–. The biology of the cell surface. Cytology. / C^ /W y; i^^ Fi G. 30. -Surface changes in the egg of Mitrocoma attending sperm-entry (after MetschnikofF). that the vitelline membrane becomes separated. The sur- face-changes differ in quality: in eggs of Nereis a superficially located jelly is extruded; in the Chaetopterus-egg the obser- vable changes are less striking; in the egg of Amphioxus discrete bodies flow together and liquefy before the mem- brane separates widely from the egg] in sea-urchins' eggs the briefly enduring surface-changes are most violent. In order further to elucidate suc
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 327. Figure 7. Stage L6 larvae, (a, b) Early stage L6 larva in dorsolateral and ventrolateral views, (c, d) Late stage L6 larva in dorsolateral and ventrolateral views. Note the rotation of the postoral lobe to an anterior- facing direction in comparison with the orientation at stage L5. afo. accessory feeding organ rudiment: an. aliform notopodium rudiment; ao, adult ocellus: lo. larval ocellus: nr. notopodial rudiment of setigers A1-A9; pa. palp rudiment: pal. palette rudiment of setigers B3-B5 Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-larval-ontogeny-327-figure-7-stage-l6-larvae-a-b-early-stage-l6-larva-in-dorsolateral-and-ventrolateral-views-c-d-late-stage-l6-larva-in-dorsolateral-and-ventrolateral-views-note-the-rotation-of-the-postoral-lobe-to-an-anterior-facing-direction-in-comparison-with-the-orientation-at-stage-l5-afo-accessory-feeding-organ-rudiment-an-aliform-notopodium-rudiment-ao-adult-ocellus-lo-larval-ocellus-nr-notopodial-rudiment-of-setigers-a1-a9-pa-palp-rudiment-pal-palette-rudiment-of-setigers-b3-b5-image234630314.htmlRMRHM9A2–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 327. Figure 7. Stage L6 larvae, (a, b) Early stage L6 larva in dorsolateral and ventrolateral views, (c, d) Late stage L6 larva in dorsolateral and ventrolateral views. Note the rotation of the postoral lobe to an anterior- facing direction in comparison with the orientation at stage L5. afo. accessory feeding organ rudiment: an. aliform notopodium rudiment; ao, adult ocellus: lo. larval ocellus: nr. notopodial rudiment of setigers A1-A9; pa. palp rudiment: pal. palette rudiment of setigers B3-B5
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 325. Figure 5. Larvae, stages L4 and L5. Anterior and posterior mesotrochs are marked by arrowheads, (a. h) Stage L4 larvae at 30 days in dorsal and ventral views, (c-e) Stage L5 larvae at 60 days in dorsal, lateral, and ventral views respectively. The locations of adult setiger rudiments are labeled in (d). Note the appearance of the red adult ocelli, visible in (e) along with the persistent larval ocelli, ao, adult ocellus; hg. hindgut; lo, larval ocellus; mg, midgut; nr. notopodial rudiment of Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-chaetopterus-larval-ontogeny-325-figure-5-larvae-stages-l4-and-l5-anterior-and-posterior-mesotrochs-are-marked-by-arrowheads-a-h-stage-l4-larvae-at-30-days-in-dorsal-and-ventral-views-c-e-stage-l5-larvae-at-60-days-in-dorsal-lateral-and-ventral-views-respectively-the-locations-of-adult-setiger-rudiments-are-labeled-in-d-note-the-appearance-of-the-red-adult-ocelli-visible-in-e-along-with-the-persistent-larval-ocelli-ao-adult-ocellus-hg-hindgut-lo-larval-ocellus-mg-midgut-nr-notopodial-rudiment-of-image234630393.htmlRMRHM9CW–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHAETOPTERUS LARVAL ONTOGENY 325. Figure 5. Larvae, stages L4 and L5. Anterior and posterior mesotrochs are marked by arrowheads, (a. h) Stage L4 larvae at 30 days in dorsal and ventral views, (c-e) Stage L5 larvae at 60 days in dorsal, lateral, and ventral views respectively. The locations of adult setiger rudiments are labeled in (d). Note the appearance of the red adult ocelli, visible in (e) along with the persistent larval ocelli, ao, adult ocellus; hg. hindgut; lo, larval ocellus; mg, midgut; nr. notopodial rudiment of
. The biology of marine animals. Marine animals; Physiology, Comparative. 10 7 '/ B 0-8 06 04 02 - / /. 1 . . 7N> ^i , , >^ 400 500 600 700. 700 Wavelength - m/i Fig. 13.1. Spectral Composition of the Light of Several Marine Animals. A, Atolla wyvillei. B, I, Chaetopterus variopedatus, II, Polynoids. C, Cypridina hilgendorfii (from Coblentz and Hughes (15). D, Pholas dactylus. interesting information about the light of bathypelagic fish (14a, 28, 36a, 49a, 49a1). The colour characteristics of the light produced are usually due to chemical peculiarities of the reacting substances. In Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-marine-animals-marine-animals-physiology-comparative-10-7-b-0-8-06-04-02-1-7ngt-i-gt-400-500-600-700-700-wavelength-mi-fig-131-spectral-composition-of-the-light-of-several-marine-animals-a-atolla-wyvillei-b-i-chaetopterus-variopedatus-ii-polynoids-c-cypridina-hilgendorfii-from-coblentz-and-hughes-15-d-pholas-dactylus-interesting-information-about-the-light-of-bathypelagic-fish-14a-28-36a-49a-49a1-the-colour-characteristics-of-the-light-produced-are-usually-due-to-chemical-peculiarities-of-the-reacting-substances-in-image234601673.htmlRMRHK0R5–. The biology of marine animals. Marine animals; Physiology, Comparative. 10 7 '/ B 0-8 06 04 02 - / /. 1 . . 7N> ^i , , >^ 400 500 600 700. 700 Wavelength - m/i Fig. 13.1. Spectral Composition of the Light of Several Marine Animals. A, Atolla wyvillei. B, I, Chaetopterus variopedatus, II, Polynoids. C, Cypridina hilgendorfii (from Coblentz and Hughes (15). D, Pholas dactylus. interesting information about the light of bathypelagic fish (14a, 28, 36a, 49a, 49a1). The colour characteristics of the light produced are usually due to chemical peculiarities of the reacting substances. In
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INDEX 639 DE VlLLAFRANCA, G. W., AND D. E. PHILPOTT. Fine structure of skeletal muscle from Limulus, 387. VINCENT, W. S., AND E. BALTHUS. The in- corporation of radioactive label into RNA: synthesis or terminal addition, 388. Vital staining of Spisula egg, 518. Vitamin C, role of in oxidation of CO by marine eggs, 454. Vitelline membrane behavior, 410, 411. Vitelline membrane elevation in Chaetopterus eggs, 284. "Voltage clamp" data and "membrane oscil- lator," 401. Volume changes in amphibian eggs, 458, Stock Photo](https://c8.alamy.com/comp/RHMM35/the-biological-bulletin-biology-zoology-biology-marine-biology-index-639-de-vlllafranca-g-w-and-d-e-philpott-fine-structure-of-skeletal-muscle-from-limulus-387-vincent-w-s-and-e-balthus-the-in-corporation-of-radioactive-label-into-rna-synthesis-or-terminal-addition-388-vital-staining-of-spisula-egg-518-vitamin-c-role-of-in-oxidation-of-co-by-marine-eggs-454-vitelline-membrane-behavior-410-411-vitelline-membrane-elevation-in-chaetopterus-eggs-284-quotvoltage-clampquot-data-and-quotmembrane-oscil-latorquot-401-volume-changes-in-amphibian-eggs-458-RHMM35.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INDEX 639 DE VlLLAFRANCA, G. W., AND D. E. PHILPOTT. Fine structure of skeletal muscle from Limulus, 387. VINCENT, W. S., AND E. BALTHUS. The in- corporation of radioactive label into RNA: synthesis or terminal addition, 388. Vital staining of Spisula egg, 518. Vitamin C, role of in oxidation of CO by marine eggs, 454. Vitelline membrane behavior, 410, 411. Vitelline membrane elevation in Chaetopterus eggs, 284. "Voltage clamp" data and "membrane oscil- lator," 401. Volume changes in amphibian eggs, 458, Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INDEX 639 DE VlLLAFRANCA, G. W., AND D. E. PHILPOTT. Fine structure of skeletal muscle from Limulus, 387. VINCENT, W. S., AND E. BALTHUS. The in- corporation of radioactive label into RNA: synthesis or terminal addition, 388. Vital staining of Spisula egg, 518. Vitamin C, role of in oxidation of CO by marine eggs, 454. Vitelline membrane behavior, 410, 411. Vitelline membrane elevation in Chaetopterus eggs, 284. "Voltage clamp" data and "membrane oscil- lator," 401. Volume changes in amphibian eggs, 458, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-index-639-de-vlllafranca-g-w-and-d-e-philpott-fine-structure-of-skeletal-muscle-from-limulus-387-vincent-w-s-and-e-balthus-the-in-corporation-of-radioactive-label-into-rna-synthesis-or-terminal-addition-388-vital-staining-of-spisula-egg-518-vitamin-c-role-of-in-oxidation-of-co-by-marine-eggs-454-vitelline-membrane-behavior-410-411-vitelline-membrane-elevation-in-chaetopterus-eggs-284-quotvoltage-clampquot-data-and-quotmembrane-oscil-latorquot-401-volume-changes-in-amphibian-eggs-458-image234638745.htmlRMRHMM35–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INDEX 639 DE VlLLAFRANCA, G. W., AND D. E. PHILPOTT. Fine structure of skeletal muscle from Limulus, 387. VINCENT, W. S., AND E. BALTHUS. The in- corporation of radioactive label into RNA: synthesis or terminal addition, 388. Vital staining of Spisula egg, 518. Vitamin C, role of in oxidation of CO by marine eggs, 454. Vitelline membrane behavior, 410, 411. Vitelline membrane elevation in Chaetopterus eggs, 284. "Voltage clamp" data and "membrane oscil- lator," 401. Volume changes in amphibian eggs, 458,
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL CYCLE 205. Figure 1. Effect ofD2O on tin- /irt meiotic division in Chaetopterus pergamentaceous oocytes. (A). (B) Melaphasc and antiphase, respectively, of I he first meiolic division in control oocytes. fC). (D) First meiotic division in the oocyte treated with 40% £>,0 prior hi fertilization. Note the increase in spindle size and hireringence in mctaphase (C) in comparison to control oocyles ,-h the D:O-lrcalcd oocyte goes through anaphase. the spindle fibers shorten and spindle birefringence decreases (D) of spin Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-cell-cycle-205-figure-1-effect-ofd2o-on-tin-irt-meiotic-division-in-chaetopterus-pergamentaceous-oocytes-a-b-melaphasc-and-antiphase-respectively-of-i-he-first-meiolic-division-in-control-oocytes-fc-d-first-meiotic-division-in-the-oocyte-treated-with-40-gt0-prior-hi-fertilization-note-the-increase-in-spindle-size-and-hireringence-in-mctaphase-c-in-comparison-to-control-oocyles-h-the-do-lrcalcd-oocyte-goes-through-anaphase-the-spindle-fibers-shorten-and-spindle-birefringence-decreases-d-of-spin-image234634191.htmlRMRHME8F–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL CYCLE 205. Figure 1. Effect ofD2O on tin- /irt meiotic division in Chaetopterus pergamentaceous oocytes. (A). (B) Melaphasc and antiphase, respectively, of I he first meiolic division in control oocytes. fC). (D) First meiotic division in the oocyte treated with 40% £>,0 prior hi fertilization. Note the increase in spindle size and hireringence in mctaphase (C) in comparison to control oocyles ,-h the D:O-lrcalcd oocyte goes through anaphase. the spindle fibers shorten and spindle birefringence decreases (D) of spin
. Bulletin. Science. IP wy^i&^iiiSssA. • • * H. Fig. 2. Warm-water invertebrates representing first occurrences in California. A. Chloeia viridis. B. Stenorhynchus debilis. C. Pleurobranchus areolatus. D. Chromodoris galexorum. E. Polycera al- abe. E Holothuria impatiens. Photos A, C-F by E. Erikson. Photo B by R. Herrmann. prior to 10/98. No specimens have been reported elsewhere in California. C. viridis was observed crawling on the surface of sheltered-shore, silty-sand sub- strates and entering tubes of the parchment worm Chaetopterus variopedatus. On several occasions, fire worms appe Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-science-ip-wyiampiiisssa-h-fig-2-warm-water-invertebrates-representing-first-occurrences-in-california-a-chloeia-viridis-b-stenorhynchus-debilis-c-pleurobranchus-areolatus-d-chromodoris-galexorum-e-polycera-al-abe-e-holothuria-impatiens-photos-a-c-f-by-e-erikson-photo-b-by-r-herrmann-prior-to-1098-no-specimens-have-been-reported-elsewhere-in-california-c-viridis-was-observed-crawling-on-the-surface-of-sheltered-shore-silty-sand-sub-strates-and-entering-tubes-of-the-parchment-worm-chaetopterus-variopedatus-on-several-occasions-fire-worms-appe-image234187986.htmlRMRH054J–. Bulletin. Science. IP wy^i&^iiiSssA. • • * H. Fig. 2. Warm-water invertebrates representing first occurrences in California. A. Chloeia viridis. B. Stenorhynchus debilis. C. Pleurobranchus areolatus. D. Chromodoris galexorum. E. Polycera al- abe. E Holothuria impatiens. Photos A, C-F by E. Erikson. Photo B by R. Herrmann. prior to 10/98. No specimens have been reported elsewhere in California. C. viridis was observed crawling on the surface of sheltered-shore, silty-sand sub- strates and entering tubes of the parchment worm Chaetopterus variopedatus. On several occasions, fire worms appe
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OSMOTIC RESPONSES OF CHAETOPTERUS 281 500 - 450 - I 400 - 350 - 300- 250 -. 250 300 350 400 Medium, mM No* 450 500 FIGURE 2. The sodium concentration of Chaetopterus coelomic fluid in relation to that of the external medium, all points shown. 600 550 500 450 ,0 400 350 350 400 450 500 Medium, mM Cl 550 600 I-'U.URE 3. The chloride concentration of Chaetopterus coelomic fluid in relation to that of the external medium, all points shown.. Please note that these images are extracted from scanned page images that may have been Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-osmotic-responses-of-chaetopterus-281-500-450-i-400-350-300-250-250-300-350-400-medium-mm-no-450-500-figure-2-the-sodium-concentration-of-chaetopterus-coelomic-fluid-in-relation-to-that-of-the-external-medium-all-points-shown-600-550-500-450-0-400-350-350-400-450-500-medium-mm-cl-550-600-i-uure-3-the-chloride-concentration-of-chaetopterus-coelomic-fluid-in-relation-to-that-of-the-external-medium-all-points-shown-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-image234637864.htmlRMRHMJYM–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OSMOTIC RESPONSES OF CHAETOPTERUS 281 500 - 450 - I 400 - 350 - 300- 250 -. 250 300 350 400 Medium, mM No* 450 500 FIGURE 2. The sodium concentration of Chaetopterus coelomic fluid in relation to that of the external medium, all points shown. 600 550 500 450 ,0 400 350 350 400 450 500 Medium, mM Cl 550 600 I-'U.URE 3. The chloride concentration of Chaetopterus coelomic fluid in relation to that of the external medium, all points shown.. Please note that these images are extracted from scanned page images that may have been
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 235. FIGURES 13-17. Figure 13. Electron micrograph showing the apical region of a trochophore larva. Note columnar shape of cells, cilia (C), cortical granules (CG), and nuclei (N). Also note absence of yolk and lipid from ectoderm. Scale bar = 5.0 nm. Inset: light micrograph of a section through a troch- ophore larva to show locations of sections shown in Figures 13-15. A = apical region; M = metatrochal band; P = postrochal region. Scale bar = 100 /urn. Figure 14. Electron micrograph of a secti Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-localization-in-chaetopterus-235-figures-13-17-figure-13-electron-micrograph-showing-the-apical-region-of-a-trochophore-larva-note-columnar-shape-of-cells-cilia-c-cortical-granules-cg-and-nuclei-n-also-note-absence-of-yolk-and-lipid-from-ectoderm-scale-bar-=-50-nm-inset-light-micrograph-of-a-section-through-a-troch-ophore-larva-to-show-locations-of-sections-shown-in-figures-13-15-a-=-apical-region-m-=-metatrochal-band-p-=-postrochal-region-scale-bar-=-100-urn-figure-14-electron-micrograph-of-a-secti-image234647986.htmlRMRHN3W6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 235. FIGURES 13-17. Figure 13. Electron micrograph showing the apical region of a trochophore larva. Note columnar shape of cells, cilia (C), cortical granules (CG), and nuclei (N). Also note absence of yolk and lipid from ectoderm. Scale bar = 5.0 nm. Inset: light micrograph of a section through a troch- ophore larva to show locations of sections shown in Figures 13-15. A = apical region; M = metatrochal band; P = postrochal region. Scale bar = 100 /urn. Figure 14. Electron micrograph of a secti
. Bulletin - United States National Museum. Science. Fig. 74. — Pixnixa transversalis, outer maxilliped of femalb (4044G), X 16J.. -pinnixa tnansvbr.salis. o, abdomen e, enlarged ; 6, uigut chelil'ed, en- (After Faxon.) Fig. 7G. — Pi.nxixa transversalis, abdomen and sternum of male, enlarged. (after milne ed- WARDS AND Lucas.) Measurements.—M2A.Q (20625), length of carapace 4.7, width of same 9.7 mm. Female (40446), length of carapace 8, width of same 1G.5 mm. Habitat.—In tube of annelid resembling Chaetopterus (Coker).. Please note that these images are extracted from scanned page images that Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-united-states-national-museum-science-fig-74-pixnixa-transversalis-outer-maxilliped-of-femalb-4044g-x-16j-pinnixa-tnansvbrsalis-o-abdomen-e-enlarged-6-uigut-cheliled-en-after-faxon-fig-7g-pinxixa-transversalis-abdomen-and-sternum-of-male-enlarged-after-milne-ed-wards-and-lucas-measurementsm2aq-20625-length-of-carapace-47-width-of-same-97-mm-female-40446-length-of-carapace-8-width-of-same-1g5-mm-habitatin-tube-of-annelid-resembling-chaetopterus-coker-please-note-that-these-images-are-extracted-from-scanned-page-images-that-image233746542.htmlRMRG822P–. Bulletin - United States National Museum. Science. Fig. 74. — Pixnixa transversalis, outer maxilliped of femalb (4044G), X 16J.. -pinnixa tnansvbr.salis. o, abdomen e, enlarged ; 6, uigut chelil'ed, en- (After Faxon.) Fig. 7G. — Pi.nxixa transversalis, abdomen and sternum of male, enlarged. (after milne ed- WARDS AND Lucas.) Measurements.—M2A.Q (20625), length of carapace 4.7, width of same 9.7 mm. Female (40446), length of carapace 8, width of same 1G.5 mm. Habitat.—In tube of annelid resembling Chaetopterus (Coker).. Please note that these images are extracted from scanned page images that
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 10 15min Time FIGURE 5. Elution pattern of Spisula factor purified by high performance liquid chromatography. Conentrated sample of the O.I WHO fraction obtained from Dowex 1-8X column was applied to a Water Radial Pak column, eluted with 0.05 M NH4H2PO4 in 10% aqueous ethanol, pH 5.0, at a flow rate of 2 ml/min. effectiveness of cAMP versus cGMP. In Spisula oocytes dbcAMP was a very potent inhibitor of GVBD when induced with sperm or serotonin. In Chaetopterus, dbcGMP was the more potent suppressor of GVBD. It was reported Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-10-15min-time-figure-5-elution-pattern-of-spisula-factor-purified-by-high-performance-liquid-chromatography-conentrated-sample-of-the-oi-who-fraction-obtained-from-dowex-1-8x-column-was-applied-to-a-water-radial-pak-column-eluted-with-005-m-nh4h2po4-in-10-aqueous-ethanol-ph-50-at-a-flow-rate-of-2-mlmin-effectiveness-of-camp-versus-cgmp-in-spisula-oocytes-dbcamp-was-a-very-potent-inhibitor-of-gvbd-when-induced-with-sperm-or-serotonin-in-chaetopterus-dbcgmp-was-the-more-potent-suppressor-of-gvbd-it-was-reported-image234646370.htmlRMRHN1RE–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 10 15min Time FIGURE 5. Elution pattern of Spisula factor purified by high performance liquid chromatography. Conentrated sample of the O.I WHO fraction obtained from Dowex 1-8X column was applied to a Water Radial Pak column, eluted with 0.05 M NH4H2PO4 in 10% aqueous ethanol, pH 5.0, at a flow rate of 2 ml/min. effectiveness of cAMP versus cGMP. In Spisula oocytes dbcAMP was a very potent inhibitor of GVBD when induced with sperm or serotonin. In Chaetopterus, dbcGMP was the more potent suppressor of GVBD. It was reported
. Animals of the seashore. Marine animals -- Atlantic Coast. VERMES 131 Polycirrus eximius Leidy Fig. 21 A small red worm, usually less than one inch, with long crowded tentacles extending in every di- rection. Lives in sand near low water mark. New England and southward.. Fig. 21 Polycirrus eximius Leidy Chaetopterus pergamentaceus Cuvier A short stout worm with the anterior (head) region much flattened; the middle region is composed of one segment bearing large -wing-like parapodia and four swollen segments; highly luminous. The worm lives in a U-shaped parchment-like tube up to two feet in Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/animals-of-the-seashore-marine-animals-atlantic-coast-vermes-131-polycirrus-eximius-leidy-fig-21-a-small-red-worm-usually-less-than-one-inch-with-long-crowded-tentacles-extending-in-every-di-rection-lives-in-sand-near-low-water-mark-new-england-and-southward-fig-21-polycirrus-eximius-leidy-chaetopterus-pergamentaceus-cuvier-a-short-stout-worm-with-the-anterior-head-region-much-flattened-the-middle-region-is-composed-of-one-segment-bearing-large-wing-like-parapodia-and-four-swollen-segments-highly-luminous-the-worm-lives-in-a-u-shaped-parchment-like-tube-up-to-two-feet-in-image236753780.htmlRMRN51T4–. Animals of the seashore. Marine animals -- Atlantic Coast. VERMES 131 Polycirrus eximius Leidy Fig. 21 A small red worm, usually less than one inch, with long crowded tentacles extending in every di- rection. Lives in sand near low water mark. New England and southward.. Fig. 21 Polycirrus eximius Leidy Chaetopterus pergamentaceus Cuvier A short stout worm with the anterior (head) region much flattened; the middle region is composed of one segment bearing large -wing-like parapodia and four swollen segments; highly luminous. The worm lives in a U-shaped parchment-like tube up to two feet in
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 233. FIGURES 10-12. Figure 10. Electron micrograph of a section through a blastomere of a 16-cell embryo. Note polarization of the cell with apical nucleus (N) and basal endoplasm with lipid (L) and yolk (Y). Scale bar = 5.0 jim. Upper inset: light micrograph of a section through a 16-cell embryo. Scale bar = 100 ^m. Lower inset: electron micrograph showing a desmosome (arrow) at the junction between adjacent blastomeres. Scale bar = 1.0 ^m. Figure 11. Section through the hyaloplasm of a 16-cell Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-localization-in-chaetopterus-233-figures-10-12-figure-10-electron-micrograph-of-a-section-through-a-blastomere-of-a-16-cell-embryo-note-polarization-of-the-cell-with-apical-nucleus-n-and-basal-endoplasm-with-lipid-l-and-yolk-y-scale-bar-=-50-jim-upper-inset-light-micrograph-of-a-section-through-a-16-cell-embryo-scale-bar-=-100-m-lower-inset-electron-micrograph-showing-a-desmosome-arrow-at-the-junction-between-adjacent-blastomeres-scale-bar-=-10-m-figure-11-section-through-the-hyaloplasm-of-a-16-cell-image234647993.htmlRMRHN3WD–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCALIZATION IN CHAETOPTERUS 233. FIGURES 10-12. Figure 10. Electron micrograph of a section through a blastomere of a 16-cell embryo. Note polarization of the cell with apical nucleus (N) and basal endoplasm with lipid (L) and yolk (Y). Scale bar = 5.0 jim. Upper inset: light micrograph of a section through a 16-cell embryo. Scale bar = 100 ^m. Lower inset: electron micrograph showing a desmosome (arrow) at the junction between adjacent blastomeres. Scale bar = 1.0 ^m. Figure 11. Section through the hyaloplasm of a 16-cell
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. setiger U I I I I I I I I I numbers pr/pe A1 A5 A9 B1 B2 B3 B4 B5 C1 pa ao an(B1) afo(B2) pal Adult setiger numbers. B2 B3 B4 I I I B5 C1 C3 etc. Figure 1. Diagrammatic views of Chaetopterus from larval stage LI through adult, showing relationships between larval and adult structures. Larvae are in lateral view with anterior to the lett and ventral towards the bottom of the page: the adult is in dorsal view, anterior to the left. The setiger numbering scheme is correlated below the drawings of stages L5, L6, L7. and the adul Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-setiger-u-i-i-i-i-i-i-i-i-i-numbers-prpe-a1-a5-a9-b1-b2-b3-b4-b5-c1-pa-ao-anb1-afob2-pal-adult-setiger-numbers-b2-b3-b4-i-i-i-b5-c1-c3-etc-figure-1-diagrammatic-views-of-chaetopterus-from-larval-stage-li-through-adult-showing-relationships-between-larval-and-adult-structures-larvae-are-in-lateral-view-with-anterior-to-the-lett-and-ventral-towards-the-bottom-of-the-page-the-adult-is-in-dorsal-view-anterior-to-the-left-the-setiger-numbering-scheme-is-correlated-below-the-drawings-of-stages-l5-l6-l7-and-the-adul-image234630484.htmlRMRHM9G4–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. setiger U I I I I I I I I I numbers pr/pe A1 A5 A9 B1 B2 B3 B4 B5 C1 pa ao an(B1) afo(B2) pal Adult setiger numbers. B2 B3 B4 I I I B5 C1 C3 etc. Figure 1. Diagrammatic views of Chaetopterus from larval stage LI through adult, showing relationships between larval and adult structures. Larvae are in lateral view with anterior to the lett and ventral towards the bottom of the page: the adult is in dorsal view, anterior to the left. The setiger numbering scheme is correlated below the drawings of stages L5, L6, L7. and the adul
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. REVERSAL OF CELL DIVISION INHIBITION 269 ARBAC/A. O AJ. P. • AT.P. Rohnt £ GI.T.P. 10 11 12 O 1 2 3 4 5 6 78 9 Cone. (MoUs/L Her FIGURE 8. The effect of ATP, ITP and AA on non-isotonic malonate-inhibited Arbacia eggs. Experimental time 100 minutes. CHAETOPTERUS /sotonic Adesiytic AcLoi O fcotosiio Aofon Q Haots A T.P. • Mon-/sotonic- Schwartz A.T.P.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-reversal-of-cell-division-inhibition-269-arbaca-o-aj-p-atp-rohnt-gitp-10-11-12-o-1-2-3-4-5-6-78-9-cone-mousl-her-figure-8-the-effect-of-atp-itp-and-aa-on-non-isotonic-malonate-inhibited-arbacia-eggs-experimental-time-100-minutes-chaetopterus-sotonic-adesiytic-acloi-o-fcotosiio-aofon-q-haots-a-tp-mon-sotonic-schwartz-atp-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-image234666711.htmlRMRHNYNY–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. REVERSAL OF CELL DIVISION INHIBITION 269 ARBAC/A. O AJ. P. • AT.P. Rohnt £ GI.T.P. 10 11 12 O 1 2 3 4 5 6 78 9 Cone. (MoUs/L Her FIGURE 8. The effect of ATP, ITP and AA on non-isotonic malonate-inhibited Arbacia eggs. Experimental time 100 minutes. CHAETOPTERUS /sotonic Adesiytic AcLoi O fcotosiio Aofon Q Haots A T.P. • Mon-/sotonic- Schwartz A.T.P.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1.O 0.9 0.8 0.1 0.6 0.5 0.4 0.3 0.2 0.1 O *—©—e—e^*«. Succisicttc Ait t7,A£> CAti Cf, -f * ^ ,f * 012345, 6 Fiitnat£ or Saccisuxte 45,67 Succinate' (Moles/Li ter-K/O2} FIGURE 10. The complete reversal of malonate-inhibited Arbacia and Chaetopterus eggs by succinate and fumarate using isotonic 10'1 M (Arbacia) and 6 X 10"2 M isotonic malonate (Chaetopterus). It is seen that malonate completely inhibits cleavage of both Arbacia and Chaetopterus eggs in isotonic solution. It is noted further that Arbacia and Chaetop Stock Photo](https://c8.alamy.com/comp/RHNYKY/the-biological-bulletin-biology-zoology-biology-marine-biology-1o-09-08-01-06-05-04-03-02-01-o-ee-succisicttc-ait-t7agt-cati-cf-f-f-012345-6-fiitnat-or-saccisuxte-4567-succinate-molesli-ter-ko2-figure-10-the-complete-reversal-of-malonate-inhibited-arbacia-and-chaetopterus-eggs-by-succinate-and-fumarate-using-isotonic-101-m-arbacia-and-6-x-10quot2-m-isotonic-malonate-chaetopterus-it-is-seen-that-malonate-completely-inhibits-cleavage-of-both-arbacia-and-chaetopterus-eggs-in-isotonic-solution-it-is-noted-further-that-arbacia-and-chaetop-RHNYKY.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1.O 0.9 0.8 0.1 0.6 0.5 0.4 0.3 0.2 0.1 O *—©—e—e^*«. Succisicttc Ait t7,A£> CAti Cf, -f * ^ ,f * 012345, 6 Fiitnat£ or Saccisuxte 45,67 Succinate' (Moles/Li ter-K/O2} FIGURE 10. The complete reversal of malonate-inhibited Arbacia and Chaetopterus eggs by succinate and fumarate using isotonic 10'1 M (Arbacia) and 6 X 10"2 M isotonic malonate (Chaetopterus). It is seen that malonate completely inhibits cleavage of both Arbacia and Chaetopterus eggs in isotonic solution. It is noted further that Arbacia and Chaetop Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1.O 0.9 0.8 0.1 0.6 0.5 0.4 0.3 0.2 0.1 O *—©—e—e^*«. Succisicttc Ait t7,A£> CAti Cf, -f * ^ ,f * 012345, 6 Fiitnat£ or Saccisuxte 45,67 Succinate' (Moles/Li ter-K/O2} FIGURE 10. The complete reversal of malonate-inhibited Arbacia and Chaetopterus eggs by succinate and fumarate using isotonic 10'1 M (Arbacia) and 6 X 10"2 M isotonic malonate (Chaetopterus). It is seen that malonate completely inhibits cleavage of both Arbacia and Chaetopterus eggs in isotonic solution. It is noted further that Arbacia and Chaetop Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-1o-09-08-01-06-05-04-03-02-01-o-ee-succisicttc-ait-t7agt-cati-cf-f-f-012345-6-fiitnat-or-saccisuxte-4567-succinate-molesli-ter-ko2-figure-10-the-complete-reversal-of-malonate-inhibited-arbacia-and-chaetopterus-eggs-by-succinate-and-fumarate-using-isotonic-101-m-arbacia-and-6-x-10quot2-m-isotonic-malonate-chaetopterus-it-is-seen-that-malonate-completely-inhibits-cleavage-of-both-arbacia-and-chaetopterus-eggs-in-isotonic-solution-it-is-noted-further-that-arbacia-and-chaetop-image234666655.htmlRMRHNYKY–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1.O 0.9 0.8 0.1 0.6 0.5 0.4 0.3 0.2 0.1 O *—©—e—e^*«. Succisicttc Ait t7,A£> CAti Cf, -f * ^ ,f * 012345, 6 Fiitnat£ or Saccisuxte 45,67 Succinate' (Moles/Li ter-K/O2} FIGURE 10. The complete reversal of malonate-inhibited Arbacia and Chaetopterus eggs by succinate and fumarate using isotonic 10'1 M (Arbacia) and 6 X 10"2 M isotonic malonate (Chaetopterus). It is seen that malonate completely inhibits cleavage of both Arbacia and Chaetopterus eggs in isotonic solution. It is noted further that Arbacia and Chaetop
. Bulletin - United States National Museum. Science. THE GRAPSOID CBABS OF AMERICA. 133 Range.—Panama (Faxon) to Punta Arenas, Patagonia (Lenz), Material examined.— Panama; Mar. 12, 1891; steamer Albatross; 1 male, 4 females ovig., cotypes (20625). Peru; near northeast side of San Lorenzo Island; in piece of tube resembling that of Chaetopterus; 2^ fathoms; R. E. Coker; 1 female ovig. (4044G). PINNIXA FAXONI.i new species. Plate 29, figs. 4-7. Tyye-localitij.—Trinidad; Albatross; male holotype; Cat. No. 7639, U.S.N.M.. a b Fio. 77.—PiNNiXA PAXOKi (7639), X 131. a. Abdomen of male; 6, outer max Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-united-states-national-museum-science-the-grapsoid-cbabs-of-america-133-rangepanama-faxon-to-punta-arenas-patagonia-lenz-material-examined-panama-mar-12-1891-steamer-albatross-1-male-4-females-ovig-cotypes-20625-peru-near-northeast-side-of-san-lorenzo-island-in-piece-of-tube-resembling-that-of-chaetopterus-2-fathoms-r-e-coker-1-female-ovig-4044g-pinnixa-faxonii-new-species-plate-29-figs-4-7-tyye-localitijtrinidad-albatross-male-holotype-cat-no-7639-usnm-a-b-fio-77pinnixa-paxoki-7639-x-131-a-abdomen-of-male-6-outer-max-image233746532.htmlRMRG822C–. Bulletin - United States National Museum. Science. THE GRAPSOID CBABS OF AMERICA. 133 Range.—Panama (Faxon) to Punta Arenas, Patagonia (Lenz), Material examined.— Panama; Mar. 12, 1891; steamer Albatross; 1 male, 4 females ovig., cotypes (20625). Peru; near northeast side of San Lorenzo Island; in piece of tube resembling that of Chaetopterus; 2^ fathoms; R. E. Coker; 1 female ovig. (4044G). PINNIXA FAXONI.i new species. Plate 29, figs. 4-7. Tyye-localitij.—Trinidad; Albatross; male holotype; Cat. No. 7639, U.S.N.M.. a b Fio. 77.—PiNNiXA PAXOKi (7639), X 131. a. Abdomen of male; 6, outer max
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O AJ. P. • AT.P. Rohnt £ GI.T.P. 10 11 12 O 1 2 3 4 5 6 78 9 Cone. (MoUs/L Her FIGURE 8. The effect of ATP, ITP and AA on non-isotonic malonate-inhibited Arbacia eggs. Experimental time 100 minutes. CHAETOPTERUS /sotonic Adesiytic AcLoi O fcotosiio Aofon Q Haots A T.P. • Mon-/sotonic- Schwartz A.T.P.. FIGURE 9. ATP and AA effect on isotonic and non-isotonic malonate-inhibited Chactop- terus eggs. The number indicates same experiment and same batch of eggs. Experimental time 100 minutes.. Please note that these images are ext Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-o-aj-p-atp-rohnt-gitp-10-11-12-o-1-2-3-4-5-6-78-9-cone-mousl-her-figure-8-the-effect-of-atp-itp-and-aa-on-non-isotonic-malonate-inhibited-arbacia-eggs-experimental-time-100-minutes-chaetopterus-sotonic-adesiytic-acloi-o-fcotosiio-aofon-q-haots-a-tp-mon-sotonic-schwartz-atp-figure-9-atp-and-aa-effect-on-isotonic-and-non-isotonic-malonate-inhibited-chactop-terus-eggs-the-number-indicates-same-experiment-and-same-batch-of-eggs-experimental-time-100-minutes-please-note-that-these-images-are-ext-image234666691.htmlRMRHNYN7–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O AJ. P. • AT.P. Rohnt £ GI.T.P. 10 11 12 O 1 2 3 4 5 6 78 9 Cone. (MoUs/L Her FIGURE 8. The effect of ATP, ITP and AA on non-isotonic malonate-inhibited Arbacia eggs. Experimental time 100 minutes. CHAETOPTERUS /sotonic Adesiytic AcLoi O fcotosiio Aofon Q Haots A T.P. • Mon-/sotonic- Schwartz A.T.P.. FIGURE 9. ATP and AA effect on isotonic and non-isotonic malonate-inhibited Chactop- terus eggs. The number indicates same experiment and same batch of eggs. Experimental time 100 minutes.. Please note that these images are ext
. Compendio della Fauna Italiana. Descrizione elementare Degli Animali pite originali. Zoology. 294 TIPO SESTO - VERMI col nome volgare di esca di arena; il genere Chaetopterus, di cui la C. variojjedatus e conosciuta a Napoli col nome volgare di riccio. La Sicrnanpis scutata è comune lungo le costo ita- liane , a Napoli è nota col nome di mustacielli; il gruppo dei SuhelUdi (Terchella) (fi- gura 559), le di cui specie sono conosciute col nome vol- gare di fiocchi; il gruppo dei SerpnUni (Serpiila) (fig. 560) con tulio calcareo resistente, frequentemente fissato sopra le valve dei molluschi. F Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/compendio-della-fauna-italiana-descrizione-elementare-degli-animali-pite-originali-zoology-294-tipo-sesto-vermi-col-nome-volgare-di-esca-di-arena-il-genere-chaetopterus-di-cui-la-c-variojjedatus-e-conosciuta-a-napoli-col-nome-volgare-di-riccio-la-sicrnanpis-scutata-comune-lungo-le-costo-ita-liane-a-napoli-nota-col-nome-di-mustacielli-il-gruppo-dei-suheludi-terchella-fi-gura-559-le-di-cui-specie-sono-conosciute-col-nome-vol-gare-di-fiocchi-il-gruppo-dei-serpnuni-serpiila-fig-560-con-tulio-calcareo-resistente-frequentemente-fissato-sopra-le-valve-dei-molluschi-f-image232671768.htmlRMREF360–. Compendio della Fauna Italiana. Descrizione elementare Degli Animali pite originali. Zoology. 294 TIPO SESTO - VERMI col nome volgare di esca di arena; il genere Chaetopterus, di cui la C. variojjedatus e conosciuta a Napoli col nome volgare di riccio. La Sicrnanpis scutata è comune lungo le costo ita- liane , a Napoli è nota col nome di mustacielli; il gruppo dei SuhelUdi (Terchella) (fi- gura 559), le di cui specie sono conosciute col nome vol- gare di fiocchi; il gruppo dei SerpnUni (Serpiila) (fig. 560) con tulio calcareo resistente, frequentemente fissato sopra le valve dei molluschi. F
. The elements of experimental embryology. Embryology, Experimental; Embryology. THE MOSAIC STAGE OF DIFFERENTIATION 219 an oil cap, a clear zone, a yolk field, and a zone of pigment; this stratification may bear any relation to the original axis of polarity. Nevertheless, normal larvae develop, regardless of the distribution of the visible contents.^ The same is true of the egg of Chaetopterus, and the polar lobe may contain any of the visible materials without influencing normal development.^. Please note that these images are extracted from scanned page images that may have been digitally e Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-elements-of-experimental-embryology-embryology-experimental-embryology-the-mosaic-stage-of-differentiation-219-an-oil-cap-a-clear-zone-a-yolk-field-and-a-zone-of-pigment-this-stratification-may-bear-any-relation-to-the-original-axis-of-polarity-nevertheless-normal-larvae-develop-regardless-of-the-distribution-of-the-visible-contents-the-same-is-true-of-the-egg-of-chaetopterus-and-the-polar-lobe-may-contain-any-of-the-visible-materials-without-influencing-normal-development-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-e-image231582737.htmlRMRCNE41–. The elements of experimental embryology. Embryology, Experimental; Embryology. THE MOSAIC STAGE OF DIFFERENTIATION 219 an oil cap, a clear zone, a yolk field, and a zone of pigment; this stratification may bear any relation to the original axis of polarity. Nevertheless, normal larvae develop, regardless of the distribution of the visible contents.^ The same is true of the egg of Chaetopterus, and the polar lobe may contain any of the visible materials without influencing normal development.^. Please note that these images are extracted from scanned page images that may have been digitally e
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