Nuclear and cytoplasmic interrelations in the fertilization of the Asterias egg.
Nuclear and cytoplasmic interrelations in the fertilization of the Asterias egg.
复制标题
海星卵受精过程中核和细胞质的相互关系。
DOI：
10.2307/1538362
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发表时间：
1949
期刊：
影响因子：
--
通讯作者：
E. Chambers
中科院分区：
文献类型：
--
作者：
R. Chambers;E. Chambers
宽叶海盘车的成熟囊泡卵母细胞在海水中正常成熟。在16° C。第一极体在约80分钟内形成，第二极体在108分钟内形成。从生殖泡破裂到第二极体消失后的一段时间内，卵子都是可受精的。Fol（1879，p.204）指出，受精的最佳时间是在生殖囊泡破裂后直到第一极体形成。根据Fol的观点，精子星出现的最早时期总是在第二极体形成后几分钟。要强调的一个特征是，在成熟过程中，由于胚泡的内容物与细胞质的混合而引起的核质的进行性变化。当卵子在第一极体形成前两到三分钟或之后受精时，精子在活卵中出现的时间在16° C下约为35分钟。
Full-sized germinal vesicle oocytes of Asterias forbesii undergo normal maturation in sea water. At 16° C. the first polar bodies are formed in about 80 minutes, and the second, in 108 minutes. The eggs are sperm-fertilizable from the time of germinal vesicle breakdown until some time after elimination of the second polar bodies. Fol (1879, p. 204) indicated that the optimum time for insemination is after germinal vesicle breakdown up to the first polar body formation. In accordance with Fol, the earliest period for the sperm aster to appear was found to be always a few minutes after the formation of the second polar body. A feature to be stressed is the progressive change of the karyocytoplasm induced by the mixing of the contents of the germinal vesicle with the cytoplasm during maturation.Maturation of the karyocytoplasm1. When eggs are inseminated two to three minutes before first polar body formation or later, the time for the sperm aster to appear in the living egg is about 35 minutes at 16° C.When ...