. Bulletin. Science; Natural history; Natural history. Fig. 9. a 1: Dorsal view of a cluster of "seed" barnacles (Cryptolepas rhachianecti). Note surrounding ring of irritated, comified dermis at e. a2: 17 mm in diameter barnacle, bl: Cross-sectional view of barnacle cluster al (dorsal is up), c: Note the cylindrical form and depth of penetration of the neo- parapets (3-4 mm in diameter) as opposed to the fluted, elliptically-shaped, more mature barnacle at 2d; s is skin; b is blubber; f is the basis of the barnacle, c; The cluster c includes eighteen barnacles in an area about the s

. Bulletin. Science; Natural history; Natural history. Fig. 9. a 1: Dorsal view of a cluster of "seed" barnacles (Cryptolepas rhachianecti). Note surrounding ring of irritated, comified dermis at e. a2: 17 mm in diameter barnacle, bl: Cross-sectional view of barnacle cluster al (dorsal is up), c: Note the cylindrical form and depth of penetration of the neo- parapets (3-4 mm in diameter) as opposed to the fluted, elliptically-shaped, more mature barnacle at 2d; s is skin; b is blubber; f is the basis of the barnacle, c; The cluster c includes eighteen barnacles in an area about the s Stock Photo
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. Bulletin. Science; Natural history; Natural history. Fig. 9. a 1: Dorsal view of a cluster of "seed" barnacles (Cryptolepas rhachianecti). Note surrounding ring of irritated, comified dermis at e. a2: 17 mm in diameter barnacle, bl: Cross-sectional view of barnacle cluster al (dorsal is up), c: Note the cylindrical form and depth of penetration of the neo- parapets (3-4 mm in diameter) as opposed to the fluted, elliptically-shaped, more mature barnacle at 2d; s is skin; b is blubber; f is the basis of the barnacle, c; The cluster c includes eighteen barnacles in an area about the size of a penny (15 mm in diameter). of the genus Sacculina and other rhizocephahds. In Sacculina the cypris attaches by its antennae to a crab seta and inserts itself as a small mass of undifferentiated cells (see Green 1961; Barnes 1963) by means of a short dart-like tube that pierces the integument of the host. Figure 4a shows a series of attenuated pits of very small diameter in the skin of a young gray whale (Table 1 LACM-54548). These pits possibly mark the points of penetration and insertion of the cypris larvae of C. rhachianecti. In the immediate area of these pits is a small (3 mm in diameter) barnacle that has not yet fully developed its protective, calcareous parapet (Fig. 4b). Insertion of C. rhachianecti into the epidermis of the gray whale, therefore, might be similar to that of Sacculina into crabs.. 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.. Southern California Academy of Sciences. Los Angeles, Calif. : The Academy

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