Blocks to polyspermy in Chaetopterus.

Blocks to polyspermy in Chaetopterus.
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阻碍毛鳍龙属的多精受精。

DOI:
10.1002/jez.1402330213
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发表时间:
1985
期刊:
The Journal of experimental zoology
影响因子:
--
通讯作者:
Anderson,WA
Anderson,WA
中科院分区:
--
文献类型:
--
作者:
Eckberg,WR;Anderson,WA

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多精受精的障碍物可能在卵质膜水平起作用以防止配子融合,或在卵表面被膜水平起作用以防止配子附着。本研究旨在确定毛鳍鱼多精受精的障碍类型。结果表明,这两种类型都存在。基于与卵黄层中可检测到的变化的独立性,快速阻断作用于质膜水平,并且依赖于外部钠离子。一个卵黄层块已预测的形态学证据,并支持在这里证明增加多精受精后的卵黄层的化学破坏。然而,受精卵的卵黄层保留了其启动精子顶体反应并附着已发生顶体反应的精子的能力。卵黄层阻塞是由于卵微绒毛从卵黄层上缩回,而不是由于卵黄层本身的升高。因此,受精卵的卵黄层可能参与阻止精子进入卵子,而不会在结构或功能上发生变化。
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.
细胞骨架抑制剂对 Chaetopterus pergamentaceus 细胞质定位的影响。
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
DOI: 10.1016/0012-1606(82)90335-9
发表时间: 1982-01-01
影响因子: 2.7
作者:
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通讯作者: SCHERTEL, ER
DOI: 10.1002/jez.1401800211
发表时间: 1972-01-01
影响因子: --
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DOI: 10.1002/jez.1402270315
发表时间: 1983
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