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Perophora Stock Photos and Images

Colonial Ascidians (Perophora namei). Raja Ampat, West Papua, Indonesia, Pacific Ocean [size of single organism: 13 cm] Stock Photo
RM2C65XX9–Colonial Ascidians (Perophora namei). Raja Ampat, West Papua, Indonesia, Pacific Ocean [size of single organism: 13 cm]
Phlebobranch ascidians, Perophora namei, Puerto Galera, Oriental Mindoro, Philippines, Pacific Stock Photo
RMPP6TFF–Phlebobranch ascidians, Perophora namei, Puerto Galera, Oriental Mindoro, Philippines, Pacific
Smily looking like Cluster of colourful Sea Tunicates (Perophora sp.) Raja Ampat, West Papua, Indonesia, Pacific Ocean Stock Photo
RM2C660JM–Smily looking like Cluster of colourful Sea Tunicates (Perophora sp.) Raja Ampat, West Papua, Indonesia, Pacific Ocean
Phlebobranch ascidian, Perophora modicata, Bunaken Marine Park, North Sulawesi, Indonesia, Pacific Stock Photo
RMDAHYNF–Phlebobranch ascidian, Perophora modicata, Bunaken Marine Park, North Sulawesi, Indonesia, Pacific
Blue Ascidians on a stalk under water. Stock Photo
RMBEJ63A–Blue Ascidians on a stalk under water.
Perophora Sea Squirt, Perophora namei, Raja Ampat, Indonesia Stock Photo
RMF6EY31–Perophora Sea Squirt, Perophora namei, Raja Ampat, Indonesia
Colonial ascidians (Perophora namei) Raja Ampat, West Papua, Indonesia, Pacific Ocean. Stock Photo
RMW85DBE–Colonial ascidians (Perophora namei) Raja Ampat, West Papua, Indonesia, Pacific Ocean.
Sea Squirt, Perophora namei, Channel Island, Aljui Bay, Raja Ampat, West Papua, Indonesia Stock Photo
RM2C5161C–Sea Squirt, Perophora namei, Channel Island, Aljui Bay, Raja Ampat, West Papua, Indonesia
Smiley looking cluster of Sea tunicates (Perophora sp) Raja Ampat, West Papua, Indonesia, Pacific Ocean. Stock Photo
RMW85DG1–Smiley looking cluster of Sea tunicates (Perophora sp) Raja Ampat, West Papua, Indonesia, Pacific Ocean.
Translucent Sea Squirts, Perophora namei, White Arrow dive site, Aljui Bay, Raja Ampat, West Papua, Indonesia Stock Photo
RM2RDYBBD–Translucent Sea Squirts, Perophora namei, White Arrow dive site, Aljui Bay, Raja Ampat, West Papua, Indonesia
Ascidian (Perophora namei) Mellisas garden, Kervo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean Stock Photo
RMW7RJX1–Ascidian (Perophora namei) Mellisas garden, Kervo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean
A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia. Stock Photo
RMD0NGRE–A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia.
Archive image from page 208 of Den Norske Nordhavs-expedition, 1876-1878 (1880-1901). Den Norske Nordhavs-expedition, 1876-1878 dennorskenordhav07mohn Year: 1880-1901 B-5 FcJI-' -1- DR 10. WJF- MS- ''''J W-T i WLspic. Pbr. ' , ' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-t.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)ita})]ia in<ignilarv(i Stock Photo
RMW245Y6–Archive image from page 208 of Den Norske Nordhavs-expedition, 1876-1878 (1880-1901). Den Norske Nordhavs-expedition, 1876-1878 dennorskenordhav07mohn Year: 1880-1901 B-5 FcJI-' -1- DR 10. WJF- MS- ''''J W-T i WLspic. Pbr. ' , ' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-t.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)ita})]ia in<ignilarv(i
. The microscope and its revelations. of Laguncula, the chief difference being that a regular cir-culation takes place through the stolon in the one case, such as has110 existence in the other. A better opportunity of studying theliving actions of the Ascidians can scarcely be found than that whichis afforded by the genus Perophora, first discovered by Mr. Lister,which occurs not unfrequently on the south coast of England and inthe Irish Sea, living attached to seaweeds, and looking like an assem-blage of minute globules of jelly, dotted with orange and brown, andlinked by a silvery winding th Stock Photo
RM2CF5R8G–. The microscope and its revelations. of Laguncula, the chief difference being that a regular cir-culation takes place through the stolon in the one case, such as has110 existence in the other. A better opportunity of studying theliving actions of the Ascidians can scarcely be found than that whichis afforded by the genus Perophora, first discovered by Mr. Lister,which occurs not unfrequently on the south coast of England and inthe Irish Sea, living attached to seaweeds, and looking like an assem-blage of minute globules of jelly, dotted with orange and brown, andlinked by a silvery winding th
. Den Norske Nordhavs-expedition, 1876-1878. Scientific expeditions; Marine animals -- Norwegian Sea; Marine animals -- Arctic regions; Norwegian Sea. B-5 Fc*JI-" -1- DR 10. WJ^F- MS- ""''J W-T i WLspic. Pbr. ' , ^' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-^^t^.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)i^ta})]ia in<ignilarv(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.. Mohn, Henrik, Stock Photo
RMPFDR5C–. Den Norske Nordhavs-expedition, 1876-1878. Scientific expeditions; Marine animals -- Norwegian Sea; Marine animals -- Arctic regions; Norwegian Sea. B-5 Fc*JI-" -1- DR 10. WJ^F- MS- ""''J W-T i WLspic. Pbr. ' , ^' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-^^t^.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)i^ta})]ia in<ignilarv(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.. Mohn, Henrik,
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsfalten auftretenden Gefässe als Längsrippen ,, c 6 t e s longitudinales" und nimmt i Stock Photo
RMMABFPE–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsfalten auftretenden Gefässe als Längsrippen ,, c 6 t e s longitudinales" und nimmt i
A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia. Stock Photo
RMD0NGNR–A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia.
Dr HG Bronn's Klassen und Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild drhgbronnsklasse31bron Year: 1893-1911 jjuiyi/is -*s h^ '^ (/ Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsf Stock Photo
RMT0DDC8–Dr HG Bronn's Klassen und Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild drhgbronnsklasse31bron Year: 1893-1911 jjuiyi/is -*s h^ '^ (/ Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsf
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411. Chart 193.—Perophora viridis.. 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. Washington, D. C. : Govt. Print. Off. Stock Photo
RMRGHXFF–. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411. Chart 193.—Perophora viridis.. 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. Washington, D. C. : Govt. Print. Off.
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . f>9 Ä's M d Querschnitte durch die Kegion des Dorsalseptums von Perophora Listen. "Vr -^ = Schnitt unmittelbar hinter der Afteröffnung. B = Schnitt ein wenig weiter hinten geführt. o = Aeusseres Peribranchial- und Cloaken-Epithel; h = inneres Peribranchialepithel; II) = Blutbahnen; bg = Bindegewebe; c = Cellulosemantel; cl = Cloake; ec = Ekto- dermepithel; M ^ Kiemendarm; hs = Kiemcnspalten; m = Muskelzüge; p == Peri- branchialräumc; r = Rectum; s = Dorsalseptum; d = Samenleiter. Stock Photo
RMMABF8D–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . f>9 Ä's M d Querschnitte durch die Kegion des Dorsalseptums von Perophora Listen. "Vr -^ = Schnitt unmittelbar hinter der Afteröffnung. B = Schnitt ein wenig weiter hinten geführt. o = Aeusseres Peribranchial- und Cloaken-Epithel; h = inneres Peribranchialepithel; II) = Blutbahnen; bg = Bindegewebe; c = Cellulosemantel; cl = Cloake; ec = Ekto- dermepithel; M ^ Kiemendarm; hs = Kiemcnspalten; m = Muskelzüge; p == Peri- branchialräumc; r = Rectum; s = Dorsalseptum; d = Samenleiter.
A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia. Stock Photo
RMD0NGRB–A sea squirt or tunicate (Perophora namei) colony, Raja Ampat Islands, West Papua, Indonesia.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. After Chandelon. After Uljanin. Ampulla? of the pyluric gland as seen in Doliolum and Perophora respectively. latter found tin- ductsand believed tin- ampulla- were ciliated too, although he could not see it. The cases in which cilia have been ,i in the ampulla- were all observed before the modern meth- ods of mien.-! npic technique were evolved. Since then we have been carried away by the use of dead material when in main cases, perhap-, as much if not more could be -ecu in the living. Although the protoplasm of the .ilU Stock Photo
RMRHRANK–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. After Chandelon. After Uljanin. Ampulla? of the pyluric gland as seen in Doliolum and Perophora respectively. latter found tin- ductsand believed tin- ampulla- were ciliated too, although he could not see it. The cases in which cilia have been ,i in the ampulla- were all observed before the modern meth- ods of mien.-! npic technique were evolved. Since then we have been carried away by the use of dead material when in main cases, perhap-, as much if not more could be -ecu in the living. Although the protoplasm of the .ilU
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . B -ec A = Schwanzende einer Larve von Perophora Listen. *'7j. B = Optischer lateraler Längsschnitt durch ein Stück des Euderschwanzes eines Clavelina- Embryos. ^^o/j. c = Cellulosemantel; ch = Chorda; ec = Ektodermepitliel; sm = Schwanz- muskelzellen. aber später noch stark verändern, da sie dann die elastische Grundsub- stanz der Chorda darstellt. Die Chordazellen erinnern auf diesem Stadium an das Bild, das eine biconcave Fischwirbelreihe zeigt. Im Folgenden nimmt die Zwischensubstanz Stock Photo
RMMABF46–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . B -ec A = Schwanzende einer Larve von Perophora Listen. *'7j. B = Optischer lateraler Längsschnitt durch ein Stück des Euderschwanzes eines Clavelina- Embryos. ^^o/j. c = Cellulosemantel; ch = Chorda; ec = Ektodermepitliel; sm = Schwanz- muskelzellen. aber später noch stark verändern, da sie dann die elastische Grundsub- stanz der Chorda darstellt. Die Chordazellen erinnern auf diesem Stadium an das Bild, das eine biconcave Fischwirbelreihe zeigt. Im Folgenden nimmt die Zwischensubstanz
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 82 N. J. BERRILL Perophora viridis has a greenish tinge, as its name implies, and both oozooid and blast o/ooid have four rows of stigmata. Perophora listen is similar in that the greenish colour is quite absent, but it forms by no means such dense colonies. Perophora annectens differs from both these species in that it has but three rows of stigmata. rcroplwni hcrmndctisis possesses blastozooids with five rows of sti.umaia .although the oo/oid has but four) and is accordingly unique. It may be readily distinguished from P. Stock Photo
RMRHP777–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 82 N. J. BERRILL Perophora viridis has a greenish tinge, as its name implies, and both oozooid and blast o/ooid have four rows of stigmata. Perophora listen is similar in that the greenish colour is quite absent, but it forms by no means such dense colonies. Perophora annectens differs from both these species in that it has but three rows of stigmata. rcroplwni hcrmndctisis possesses blastozooids with five rows of sti.umaia .although the oo/oid has but four) and is accordingly unique. It may be readily distinguished from P.
. Evenings at the microscope : or, researches among the minuter organs and forms of animal life. Microscopy; Microscopes; Medical microscopy. 36 EVENINGS AT THE MICEOSCOPE. of sea-water is a small fragment of sea-weed, and at- tached to one of its slender filaments you may see three or four tiny knobs of jelly, clustered together like a bunch of grapes. These are animals; each endowed with a distinct life, but associated together by a com- mon stalk, which maintains the mutual vital connexion of the whole. It is one of the Social Tunicata, and is named Perophora Listen. Though each globose Icn Stock Photo
RMRDJ3H5–. Evenings at the microscope : or, researches among the minuter organs and forms of animal life. Microscopy; Microscopes; Medical microscopy. 36 EVENINGS AT THE MICEOSCOPE. of sea-water is a small fragment of sea-weed, and at- tached to one of its slender filaments you may see three or four tiny knobs of jelly, clustered together like a bunch of grapes. These are animals; each endowed with a distinct life, but associated together by a com- mon stalk, which maintains the mutual vital connexion of the whole. It is one of the Social Tunicata, and is named Perophora Listen. Though each globose Icn
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Budding in Perophora. 215 At this stage there is found a collection of cells applied closely to the outer surface of the endodermal vesicle high up on the right side. These cells (fig. 1, PC.) appear when the vesicle is still spherical, and form a somewhat elongated mass lying in the posterior portion of the bud ; they give rise later to the pericardium, which is therefore the first organ to make its appearance. At first the rudiment consists merely of a single layer of cells Stock Photo
RMRMNBF5–. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Budding in Perophora. 215 At this stage there is found a collection of cells applied closely to the outer surface of the endodermal vesicle high up on the right side. These cells (fig. 1, PC.) appear when the vesicle is still spherical, and form a somewhat elongated mass lying in the posterior portion of the bud ; they give rise later to the pericardium, which is therefore the first organ to make its appearance. At first the rudiment consists merely of a single layer of cells
. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411 CHART OF VINEYARD SOUND BUZZARDS BAY ^ SHOWING t DISTRIBUTION OF SPECIES ^ NEW BEDFORD®. Chart 193.—Perophora viridis.. 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, 1872-; Cole, Leo Stock Photo
RMRR5FA6–. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411 CHART OF VINEYARD SOUND BUZZARDS BAY ^ SHOWING t DISTRIBUTION OF SPECIES ^ NEW BEDFORD®. Chart 193.—Perophora viridis.. 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, 1872-; Cole, Leo
. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. BLOOD. 33 water is a small fragment of sea-weed, and attached to one of its slender filaments you may see three or four tiny knobs of jelly, clustered together like a bunch of grapes. These are animals; each endowed with a distinct life, but associated together by a common stalk, which maintains the mutual vital connexion of the whole. It is one of the Social Tunicata, and is named Perophora Listen. Though each globose knob is no larger than a small pin's head, it Stock Photo
RMRDHPD0–. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. BLOOD. 33 water is a small fragment of sea-weed, and attached to one of its slender filaments you may see three or four tiny knobs of jelly, clustered together like a bunch of grapes. These are animals; each endowed with a distinct life, but associated together by a common stalk, which maintains the mutual vital connexion of the whole. It is one of the Social Tunicata, and is named Perophora Listen. Though each globose knob is no larger than a small pin's head, it
. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 156 BRITISH TUNICATA. can only be determined, in so minute a creature, in living specimens. The blood-system, however, in the living Perophora, has been very carefully observed by Dr. Lister and ably described by that physiologist, in his excellent memoir published in the ' Philosophical Transactions,' where the author has given a full account of the circulation in this animal. The test is thin, elastic, smooth, and perfectly hyaline, and is united to the mantle throughout. The FIG. 85. FIG. 86.. Please note that these ima Stock Photo
RMRH2XB1–. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 156 BRITISH TUNICATA. can only be determined, in so minute a creature, in living specimens. The blood-system, however, in the living Perophora, has been very carefully observed by Dr. Lister and ably described by that physiologist, in his excellent memoir published in the ' Philosophical Transactions,' where the author has given a full account of the circulation in this animal. The test is thin, elastic, smooth, and perfectly hyaline, and is united to the mantle throughout. The FIG. 85. FIG. 86.. Please note that these ima
. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411 CHART or VINEYARD SOUND AND BUZZARDS BAV SHOWING DISTRIBUTION OF SPECIES. Chart 193.—Perophora viridis.. 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, Leon Jacob, 1877-; Davis, Bradley M. (Bra Stock Photo
RMRR5F8H–. [A biological survey of the waters of Woods Hole and vicinity. Marine animals; Marine plants. BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 411 CHART or VINEYARD SOUND AND BUZZARDS BAV SHOWING DISTRIBUTION OF SPECIES. Chart 193.—Perophora viridis.. 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, Leon Jacob, 1877-; Davis, Bradley M. (Bra
. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. FIGS. 85 AND 86.—Perophora Listen. 85, right side; 86, left side. Twenty times natural size. latter is exceedingly delicate and transparent, with a few muscular fibres arranged longitudinally and diago- nally in a scattered manner; they extend from the upper margin, in the region of the respiratory tubes 011 both sides of the mantle, to about half way down. The branchial sac is of a sub-quadrate form, and is almost co-extensive with the pallial chamber. The meshes are rectilinear; there are only three transverse primary ve Stock Photo
RMRH2XAF–. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. FIGS. 85 AND 86.—Perophora Listen. 85, right side; 86, left side. Twenty times natural size. latter is exceedingly delicate and transparent, with a few muscular fibres arranged longitudinally and diago- nally in a scattered manner; they extend from the upper margin, in the region of the respiratory tubes 011 both sides of the mantle, to about half way down. The branchial sac is of a sub-quadrate form, and is almost co-extensive with the pallial chamber. The meshes are rectilinear; there are only three transverse primary ve
. Zoology for high schools and colleges. Zoology. DEVELOPMENT OF A8CIDIAN8. 3as Huxley, merely as a kind of stalk, from which new zooids bud out, and this process, in his opinion, "leads to the still more singular process of development in Pyrosoma, in which the first formed embryo attains only an imperfect develop- ment, and disappears after having given rise to four ascidio- zooids." In Clavellina and Perophora the original parent Aseidian throws off branches or stolons from which develop new individuals. The usual mode of development in the simple and com- pound Ascidians (forming Stock Photo
RMRE09GY–. Zoology for high schools and colleges. Zoology. DEVELOPMENT OF A8CIDIAN8. 3as Huxley, merely as a kind of stalk, from which new zooids bud out, and this process, in his opinion, "leads to the still more singular process of development in Pyrosoma, in which the first formed embryo attains only an imperfect develop- ment, and disappears after having given rise to four ascidio- zooids." In Clavellina and Perophora the original parent Aseidian throws off branches or stolons from which develop new individuals. The usual mode of development in the simple and com- pound Ascidians (forming
. The Cambridge natural history. Zoology. 72 ASCIDIANS CHAP. Perophora, Wiegniann, with a short compact body and intestine alongside the branchial sac. Clavelina lepadifo7'mis and Peropliora listeri are common British species found at a few fathoms depth oiT various parts of our coast. Both occur round the south end of the Isle of Man. In autumn Clavelina accumulates reserve- material in the ectoderm cells of parts of the stolon, which remain when the rest of the colony dies away, and then form new buds in spring. Fam. 2. Ascidiidae.—Solitary fixed Ascidians, never forming colonies ; with gela Stock Photo
RMRDMC8H–. The Cambridge natural history. Zoology. 72 ASCIDIANS CHAP. Perophora, Wiegniann, with a short compact body and intestine alongside the branchial sac. Clavelina lepadifo7'mis and Peropliora listeri are common British species found at a few fathoms depth oiT various parts of our coast. Both occur round the south end of the Isle of Man. In autumn Clavelina accumulates reserve- material in the ectoderm cells of parts of the stolon, which remain when the rest of the colony dies away, and then form new buds in spring. Fam. 2. Ascidiidae.—Solitary fixed Ascidians, never forming colonies ; with gela
. Bulletin - United States National Museum. Science. Figs. 77, 78.—Perophora hutchisoni MacDonald. 77, Part of a colony. X 1.25. 78, Zooid. X 13. branchial and seven atrial lobes were demonstrated in one individual. Stolon, pedicels, and zooids are insheathed in a layer of clear color- less test substance, which becomes thicker on that part of the body of the zooid where the pedicel arises so that the outline of the zooid tapers off into that of the pedicel. Yellowish brown corpuscles occur in branching vessels in the mantel, digestive organs, and to some extent in other parts of the body. Man Stock Photo
RMRG67DM–. Bulletin - United States National Museum. Science. Figs. 77, 78.—Perophora hutchisoni MacDonald. 77, Part of a colony. X 1.25. 78, Zooid. X 13. branchial and seven atrial lobes were demonstrated in one individual. Stolon, pedicels, and zooids are insheathed in a layer of clear color- less test substance, which becomes thicker on that part of the body of the zooid where the pedicel arises so that the outline of the zooid tapers off into that of the pedicel. Yellowish brown corpuscles occur in branching vessels in the mantel, digestive organs, and to some extent in other parts of the body. Man
. Bulletin. Science; Natural history; Natural history. 1971 ASCIDIANS l SOUTHERN <M II oKNIA in Order Enterogona A/ilitlin in californicum A. solidum A. arenatum i.iilirrdmania claviformls Polyclinum planum Synoicum par-fustis Didemnum carnulentum Trididemnum opacum Unidenl ilicd didemnid Diplosoma macdonaldi Clavelina huntsman! (ystodytes lobalus Distaplia occidental is Eudistoma psammion E. ritteri E. diaphanes Sigillinaria aequali-siphonis S. pulchra Ascidia ceratodes Chelyosoma productum Ciona intestinalis Perophora annectens Order Pleurogona Botryllus sp. Botrylloides sp. Styela monter Stock Photo
RMRH062C–. Bulletin. Science; Natural history; Natural history. 1971 ASCIDIANS l SOUTHERN <M II oKNIA in Order Enterogona A/ilitlin in californicum A. solidum A. arenatum i.iilirrdmania claviformls Polyclinum planum Synoicum par-fustis Didemnum carnulentum Trididemnum opacum Unidenl ilicd didemnid Diplosoma macdonaldi Clavelina huntsman! (ystodytes lobalus Distaplia occidental is Eudistoma psammion E. ritteri E. diaphanes Sigillinaria aequali-siphonis S. pulchra Ascidia ceratodes Chelyosoma productum Ciona intestinalis Perophora annectens Order Pleurogona Botryllus sp. Botrylloides sp. Styela monter
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. f>9 Ä's M d Querschnitte durch die Kegion des Dorsalseptums von Perophora Listen. "Vr -^ = Schnitt unmittelbar hinter der Afteröffnung. B = Schnitt ein wenig weiter hinten geführt. o = Aeusseres Peribranchial- und Cloaken-Epithel; h = inneres Peribranchialepithel; II) = Blutbahnen; bg = Bindegewebe; c = Cellulosemantel; cl = Cloake; ec = Ekto- dermepithel; M ^ Kiemendarm; hs = Kiemcnspalten; m = Muskelzüge; p == Peri- branchialräumc; r = Rectum; s = Dorsalseptum; d = Same Stock Photo
RMRETEBC–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. f>9 Ä's M d Querschnitte durch die Kegion des Dorsalseptums von Perophora Listen. "Vr -^ = Schnitt unmittelbar hinter der Afteröffnung. B = Schnitt ein wenig weiter hinten geführt. o = Aeusseres Peribranchial- und Cloaken-Epithel; h = inneres Peribranchialepithel; II) = Blutbahnen; bg = Bindegewebe; c = Cellulosemantel; cl = Cloake; ec = Ekto- dermepithel; M ^ Kiemendarm; hs = Kiemcnspalten; m = Muskelzüge; p == Peri- branchialräumc; r = Rectum; s = Dorsalseptum; d = Same
. Bulletin - United States National Museum. Science. PACIFIC TUNICATA OF U.S. NATIONAL MUSEUM 137 62. Perophora species MATERIAL EXAMINED Philippine Islands : Pangapuyau Island, Bavara at the other side of Sitio, i fathom; W. K. Taylor, .January 1941. Sand, mud, and stone with eelgrass. Two specimens (USXM 11G77). Remarks.—The two individuals are in sncli poor condition that specific identification is quite impossible. 63. Ecteinascidia imperfecta Tokioka Figure 49 Ecteinascidia imperfecta Tol<ioka, 1950, p. 129, fig. 9, S-I/. material examined Palau Islands : Iwayama Bay, east side of Oyst Stock Photo
RMRG7CW7–. Bulletin - United States National Museum. Science. PACIFIC TUNICATA OF U.S. NATIONAL MUSEUM 137 62. Perophora species MATERIAL EXAMINED Philippine Islands : Pangapuyau Island, Bavara at the other side of Sitio, i fathom; W. K. Taylor, .January 1941. Sand, mud, and stone with eelgrass. Two specimens (USXM 11G77). Remarks.—The two individuals are in sncli poor condition that specific identification is quite impossible. 63. Ecteinascidia imperfecta Tokioka Figure 49 Ecteinascidia imperfecta Tol<ioka, 1950, p. 129, fig. 9, S-I/. material examined Palau Islands : Iwayama Bay, east side of Oyst
. A manual of zoology. Zoology. Fig. ,548, Fig. 549. Fig. 548,—A. MoJqula manhnttensis*; B, EugyrapiUuJaris.* (From Verrill.) Fig. oi9.—Hiilrijllus violaceus. (After Carpenter.) A, small colony of eighteen indi- vidual groups; i?, two individual groups somewhat enlarged. with its own test; Perophora* CYNTmiD^, test leather}', oral and atrial openings four-lobed; Gynthia* MolgduDjE, oral opening, six-lobed, atrial four-lobed. 3Iolgu7a,* Eugyra* Sub Order II. SYNASCIDI^. Compound ascidians consisting of numerous small individuals imbedded in a common cellulose tunic and forming considerable crus Stock Photo
RMRE0839–. A manual of zoology. Zoology. Fig. ,548, Fig. 549. Fig. 548,—A. MoJqula manhnttensis*; B, EugyrapiUuJaris.* (From Verrill.) Fig. oi9.—Hiilrijllus violaceus. (After Carpenter.) A, small colony of eighteen indi- vidual groups; i?, two individual groups somewhat enlarged. with its own test; Perophora* CYNTmiD^, test leather}', oral and atrial openings four-lobed; Gynthia* MolgduDjE, oral opening, six-lobed, atrial four-lobed. 3Iolgu7a,* Eugyra* Sub Order II. SYNASCIDI^. Compound ascidians consisting of numerous small individuals imbedded in a common cellulose tunic and forming considerable crus
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 177. FIGURE 20. A histological figure of nonfusion type B, after detachment of the two stolons. Many amoebocytes were observed in the lumen of the 1-stolon. epl, epidermal cells of the 1-stolon; ept, epidermal cells of the t-stolon; tm, test matrix. Scale bar = 50 ^m. Fusibility between different colonies The two types of nonfusion did not take place at random. A particular com- bination of incompatible colonies always exhibited only one type of nonfusion. We first tested the fusibility of a c Stock Photo
RMRHN4GR–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 177. FIGURE 20. A histological figure of nonfusion type B, after detachment of the two stolons. Many amoebocytes were observed in the lumen of the 1-stolon. epl, epidermal cells of the 1-stolon; ept, epidermal cells of the t-stolon; tm, test matrix. Scale bar = 50 ^m. Fusibility between different colonies The two types of nonfusion did not take place at random. A particular com- bination of incompatible colonies always exhibited only one type of nonfusion. We first tested the fusibility of a c
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. jjuiyi/is -*s h^ '^ (/. Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsfalten auftretenden Gefässe als Längsrippen ,, c 6 t e s Stock Photo
RMREW1HR–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. jjuiyi/is -*s h^ '^ (/. Halbsehematische Darstellung des Kiemenkorbes einer Perophora von innen gesehen. B. Halbsehematische Darstellung der Kieme eines Botryllus von innen gesehen. = innere Längsgefässe; iq = innere Quergefässe; ks = Kiemenspalten; p = Papillen. einen vollkommen übereinstimmenden Bau und gleiche Lagebeziehungen aufweisen können. Lahille, und manche Forscher si]id ihm darin gefolgt, bezeichnet die als Längsfalten auftretenden Gefässe als Längsrippen ,, c 6 t e s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 175. FIGURE 14. A histological figure of nonfusion type A, after detachment of the two stolons, el, external layers of the test; epl, thickened epidermal cells of the 1-stolon; ept, epidermal cells of the t- stolon. Scale bar = 50 ^m. Figures 8-13 show a typical example of nonfusion type A. The t-stolon was growing to the 1-stolon without a noticeable change (Fig. 8). Then, a contact was made between the two stolons (Fig. 9). After contact, a protrusion appeared in the lateral portion (Fig. 10 Stock Photo
RMRHN4JW–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 175. FIGURE 14. A histological figure of nonfusion type A, after detachment of the two stolons, el, external layers of the test; epl, thickened epidermal cells of the 1-stolon; ept, epidermal cells of the t- stolon. Scale bar = 50 ^m. Figures 8-13 show a typical example of nonfusion type A. The t-stolon was growing to the 1-stolon without a noticeable change (Fig. 8). Then, a contact was made between the two stolons (Fig. 9). After contact, a protrusion appeared in the lateral portion (Fig. 10
. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. ec .sni ...rh '^^:^^^^;^W^'^^^^^^^^^. B -ec A = Schwanzende einer Larve von Perophora Listen. *'7j. B = Optischer lateraler Längsschnitt durch ein Stück des Euderschwanzes eines Clavelina- Embryos. ^^o/j. c = Cellulosemantel; ch = Chorda; ec = Ektodermepitliel; sm = Schwanz- muskelzellen. aber später noch stark verändern, da sie dann die elastische Grundsub- stanz der Chorda darstellt. Die Chordazellen erinnern auf diesem Stadium an das Bild, das eine biconcave Fischwirbelreihe z Stock Photo
RMRETCJP–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild. Zoology. ec .sni ...rh '^^:^^^^;^W^'^^^^^^^^^. B -ec A = Schwanzende einer Larve von Perophora Listen. *'7j. B = Optischer lateraler Längsschnitt durch ein Stück des Euderschwanzes eines Clavelina- Embryos. ^^o/j. c = Cellulosemantel; ch = Chorda; ec = Ektodermepitliel; sm = Schwanz- muskelzellen. aber später noch stark verändern, da sie dann die elastische Grundsub- stanz der Chorda darstellt. Die Chordazellen erinnern auf diesem Stadium an das Bild, das eine biconcave Fischwirbelreihe z
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 173. FIGURES 1-7. A typical example of fusion. (Fig. 1): 50 min before contact. (Fig. 2): 16 min after contact. (Fig. 3): 2 h after contact. (Fig. 4): 5 h after contact. The arrowhead indicates the test of the 1-stolon encroached upon the test of the t-stolon. ts, terminus of the septum in the t-stolon. (Fig. 5): 6 h after contact. The arrowhead shows the union of epidermis between the two stolons, ts, terminus of the septum in the t-stolon. (Fig. 6): 8 h after contact. The arrows indicates ep Stock Photo
RMRHN4NN–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 173. FIGURES 1-7. A typical example of fusion. (Fig. 1): 50 min before contact. (Fig. 2): 16 min after contact. (Fig. 3): 2 h after contact. (Fig. 4): 5 h after contact. The arrowhead indicates the test of the 1-stolon encroached upon the test of the t-stolon. ts, terminus of the septum in the t-stolon. (Fig. 5): 6 h after contact. The arrowhead shows the union of epidermis between the two stolons, ts, terminus of the septum in the t-stolon. (Fig. 6): 8 h after contact. The arrows indicates ep
. Bulletin. Science; Natural history; Natural history. 1 lf> lit ill 11 Si >( llll UNCAL A. areiuittmi 2.6 A. propinquum 2 I ulierdinania clavifonnis 2.5 Polyclinum sp. 8 Synoicum par-ftistis 9 Dideinnum carnulentiim 5 Trididemntim opacum 3,5,7 Unidentified didemnid 4 / issoi linttm caidleryi 6 Clavelina huntsmani 5 ( ) ttodytes lobatus 7 Disiiipliu occidental is 4 Eudistoma psammion 2.4.5.7 E. ritlcri 2.3 Pycnoclavella Stanley! 5.7 Sigillinaria aeqnali-siphonis 2 Ascidia ceratodes 1.4.5 Chelyosoma production 1.5.7 Perophora annectens 5 Diplosoma macdonaldi 8 ACADEMY OF SCIENCES VOLUME Stock Photo
RMRH0621–. Bulletin. Science; Natural history; Natural history. 1 lf> lit ill 11 Si >( llll UNCAL A. areiuittmi 2.6 A. propinquum 2 I ulierdinania clavifonnis 2.5 Polyclinum sp. 8 Synoicum par-ftistis 9 Dideinnum carnulentiim 5 Trididemntim opacum 3,5,7 Unidentified didemnid 4 / issoi linttm caidleryi 6 Clavelina huntsmani 5 ( ) ttodytes lobatus 7 Disiiipliu occidental is 4 Eudistoma psammion 2.4.5.7 E. ritlcri 2.3 Pycnoclavella Stanley! 5.7 Sigillinaria aeqnali-siphonis 2 Ascidia ceratodes 1.4.5 Chelyosoma production 1.5.7 Perophora annectens 5 Diplosoma macdonaldi 8 ACADEMY OF SCIENCES VOLUME
. Den Norske Nordhavs-expedition, 1876-1878. Scientific expeditions; Marine animals -- Norwegian Sea; Marine animals -- Arctic regions; Norwegian Sea. B-5 Fc*JI-" -1- DR 10. WJ^F- MS- ""''J W-T i WLspic. Pbr. ' , ^' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-^^t^.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)i^ta})]ia in<ignilarv(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.. Mohn, Henrik, Stock Photo
RMRCYJC4–. Den Norske Nordhavs-expedition, 1876-1878. Scientific expeditions; Marine animals -- Norwegian Sea; Marine animals -- Arctic regions; Norwegian Sea. B-5 Fc*JI-" -1- DR 10. WJ^F- MS- ""''J W-T i WLspic. Pbr. ' , ^' VKowalewsMj, 5-8. Hjort,9-13.Bonnevie del LithAns I-^^t^.Perophora Lislcri. J S. Jjotnjllidae. 9 13. J)i^ta})]ia in<ignilarv(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.. Mohn, Henrik,
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