. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Molt stages ns »- 10 Figure 9. Proecdysis. stage D:. New barbules (b) are present on all new setae (ns). (lOOx), scale bar = 30 ^m. Figure 10. Proecdysis, stage D,. The pattern of new setae (ns) is interrupted by folds of the epidermis (ep). The animal is ready to molt in this stage. (120x) scale bar = 40 nm. The crustacean molting cycle: setogenesis Although setogenesis has been used as a criterion for molt staging for many years (see Drach, 1939). species variations in setal morphology and development result in differences
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Molt stages ns »- 10 Figure 9. Proecdysis. stage D:. New barbules (b) are present on all new setae (ns). (lOOx), scale bar = 30 ^m. Figure 10. Proecdysis, stage D,. The pattern of new setae (ns) is interrupted by folds of the epidermis (ep). The animal is ready to molt in this stage. (120x) scale bar = 40 nm. The crustacean molting cycle: setogenesis Although setogenesis has been used as a criterion for molt staging for many years (see Drach, 1939). species variations in setal morphology and development result in differences among crustaceans in both staging criteria and in easily-defined subdivision of the molt stages. We have established criteria for the molt stages and substages in P. vannanu'i. These criteria include the discernment in the pleopods of the epidermis, setal lumens, internal cones, and setal organs (see Figs. 1-10). Similar criteria have been used to determine stages for the penaeidae shrimp P. ciiliforniensis, P. stylirostris (Huner and Col- E 1 c . Q. _>. O <u. 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
Size: 1602px × 1560px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
