. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 "S3* " ., I "' ! ftfw&fJ'^y ] JES •'•• .?•; *- M >.v* n. Figure 2. Micrographs of sections of the gonad of a speeimen ofAsterina pseudoexigua pucitica. Bar scale = 100 pm. A. Arrows point to three embryos in early cleavage. B. Wrinkled hlastula with grooves (arrows). C. Sagittal section of a gastrula with a differentiated archenteron. Arrow indicates blastopore. D. Many embryos developing simultaneously in the gonad. E. Sagittal section of a brachiolaria with brachiolar arms (arrows). F. Sagittal sect
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 "S3* " ., I "' ! ftfw&fJ'^y ] JES •'•• .?•; *- M >.v* n. Figure 2. Micrographs of sections of the gonad of a speeimen ofAsterina pseudoexigua pucitica. Bar scale = 100 pm. A. Arrows point to three embryos in early cleavage. B. Wrinkled hlastula with grooves (arrows). C. Sagittal section of a gastrula with a differentiated archenteron. Arrow indicates blastopore. D. Many embryos developing simultaneously in the gonad. E. Sagittal section of a brachiolaria with brachiolar arms (arrows). F. Sagittal section of a metamorphosing brachiolaria. Arrows show brachiolar arms. G. Hor- izontal (long arrow) and cross (short arrows) sections of juveniles in the gonad. E. Dorsal view of a birthing specimen /> pacil'wa. Short and long arrows indicate juveniles after birth and just appearing from gonopores. respectively. Bar scale = 1 mm. m, madreporite. F. Living specimen of a juvenile />. pacijiat just after birth, dorsal view. Bar scale = 200 ^m. tf. tube-foot. G. Scanning electron micrograph of the inside of the gonad of a specimen of A /> pucilica. Note brachiolaria (arrow) and metamorphosing larvae (asterisks). Bar scale = 100 //m. H. Same as Figure 1G, showing juveniles (j) with tube-feet (arrows) just prior to 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 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 Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
