. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ECHINODERM EGG AND OOCYTE RESPIRATION 147 tion occurs. After fertilization the consumption proceeds as an exponentially increasing curve (cf. ). On fertilization no sudden jump in consumption rate occurs as in Ps. When at natural spawning the cell leaves the ovary its nuclear membrane has disappeared. Thus the jump in the rate of respiration on transformation from primary to secondary oocyte has already occurred. Even oocytes may be fertilized, but then the time which elapses before the first mitosis will be longer thus
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ECHINODERM EGG AND OOCYTE RESPIRATION 147 tion occurs. After fertilization the consumption proceeds as an exponentially increasing curve (cf. ). On fertilization no sudden jump in consumption rate occurs as in Ps. When at natural spawning the cell leaves the ovary its nuclear membrane has disappeared. Thus the jump in the rate of respiration on transformation from primary to secondary oocyte has already occurred. Even oocytes may be fertilized, but then the time which elapses before the first mitosis will be longer thus allowing meioses to occur and thereafter the resting sperm nucleus to unite with the egg nucleus. o: UJ O U. O Ld _ O ££ UJ Q. Q. 2 CO 6 O z LU O X O. EMBRYO EGG PSAMMECHINUS TIME. 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: 1613px × 1550px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
