Blocks to polyspermy in Chaetopterus.
Blocks to polyspermy in Chaetopterus.
复制标题
阻碍毛鳍龙属的多精受精。
DOI:
10.1002/jez.1402330213
复制
发表时间:
1985
期刊:
影响因子:
--
通讯作者:
Anderson,WA
中科院分区:
文献类型:
--
作者:
Eckberg,WR;Anderson,WA
Blocks to polyspermy may act either at the level of the egg plasma membrane to prevent gamete fusion or at the level of egg surface coats to prevent gamete attachment. The present study was undertaken to determine what type(s) of block(s) to polyspermy exist inChaetopterus. The results showed the existence of both types. A rapid block acts at the plasma membrane level based on independence from detectable changes in the vitelline layer and is dependent on external sodium ions. A vitelline layer block had been predicted on morphological evidence and is supported here by demonstrating an increase in polyspermy following chemical disruption of the vitelline layer. However, the vitelline layer of the fertilized egg retained its ability to initiate the acrosome reaction in sperm and attach sperm which had undergone the acrosome reaction. The vitelline layer block resulted from the retraction of egg microvilli from the vitelline layer, and not from elevation of the vitelline layer per se. Thus the vitelline layer of the fertilized egg could be involved in preventing sperm penetration into the egg without being altered structurally or functionally.
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DOI:
10.1111/j.1432-0436.1981.tb01127.x
发表时间:
1981
期刊:
Differentiation; research in biological diversity
影响因子:
--
作者:
Eckberg,WR
通讯作者:
Eckberg,WR
影响因子:
2.7
作者:
GREY, RD;BASTIANI, MJ;SCHERTEL, ER
通讯作者:
SCHERTEL, ER
影响因子:
--
作者:
BARROS, C;YANAGIMACHI, R
通讯作者:
YANAGIMACHI, R
影响因子:
--
作者:
Masanori Sato;K. Osanai
通讯作者:
K. Osanai
DOI:
10.2307/1540883
发表时间:
1981
期刊:
The Biological Bulletin
影响因子:
--
作者:
W. Eckberg
通讯作者:
W. Eckberg