. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. i • !;K,I;RE 2. Sperm penetration in Echinaraclutius fanna, after R. Chambers, 1933. Chambers describes this as "a case in which the sperm was unusually active" (p. 133). ried away in entirety from the egg surface as in Wilson's figure, or held until the advance of the head portion has created sufficient tension to cause the tail to break at some point within the membrane. Chambers sidesteps the final decision as to whether any part of the sperm tail enters the egg cytoplasm, by stating that the truncated portion o
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. i • !;K,I;RE 2. Sperm penetration in Echinaraclutius fanna, after R. Chambers, 1933. Chambers describes this as "a case in which the sperm was unusually active" (p. 133). ried away in entirety from the egg surface as in Wilson's figure, or held until the advance of the head portion has created sufficient tension to cause the tail to break at some point within the membrane. Chambers sidesteps the final decision as to whether any part of the sperm tail enters the egg cytoplasm, by stating that the truncated portion of the tail was "lost among the processes of the exudation cone" (]>. 132). However, Chambers presents one case, involving an "unusually active" spermatozoan, in which ". . the entire length of the sperm tail came to lie within the membrane," and eventually was visible moving within the egg cytoplasm (Fig. 2).. 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
