| 雌核发育银鲫卵抑制异源精子原核化的作用模式初探 |
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| 引用本文： | 葛伟,蒋一珪. 雌核发育银鲫卵抑制异源精子原核化的作用模式初探[J]. 水生生物学报, 1985, 0(3) |
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| 作者姓名： | 葛伟 蒋一珪 |
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| 作者单位： | 中国科学院水生生物研究所 武汉 |
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| 基金项目： | 中国科学院1983年资助课题 |
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| 摘 要： | 雌核发育银鲫卵能抑制异源精子原核化,其个体发育完全由雌核控制。本实验通过去核、卵质转移和去除卵膜等手段,初步揭示了银鲫卵抑制异源精子原核化的作用,提出了双重控制的假说,即银鲫卵对异源精子具有初级控制和次级控制功能。初级控制可能是由于在精子进入卵子深部的通道上存在着某种特殊的抑制物的缘故,而次级控制的产生则可能是因为银鲫卵质中缺少某种两性融合生殖鱼类卵质所具有的促精子核化物质。
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A PRELIMINARY STUDY ON THE MODE IN THE EGG OF THE NATURALLY GYNOGENETIC CRUCIAN CARP FOR INHIBITING HETEROLOGOUS SPERM FROM TRANSFORMING INTO MALE PRONUCLEUS |
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| Ge Wei and Jiang Yigui. A PRELIMINARY STUDY ON THE MODE IN THE EGG OF THE NATURALLY GYNOGENETIC CRUCIAN CARP FOR INHIBITING HETEROLOGOUS SPERM FROM TRANSFORMING INTO MALE PRONUCLEUS[J]. Acta Hydrobiologica Sinica, 1985, 0(3) |
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| Authors: | Ge Wei and Jiang Yigui |
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| Abstract: | The egg of naturally gynogenetic crucian oarp can inhibit heterologous sperm from transforming into male pronucleus so that ontogenesis is completely controlled by the female nucleus. By removing female nucleus, transferring egg cytoplasm and inseminating the egg after the removal of chorion, the present experiment preliminarily revealed the way the egg inhibits sperm nucleus from transforming into pronucleus. On the basis of the experimental results, a hypothesis of double control is advanced: the gynogenetic egg has primary control and secondiary control over the heterologous sperm. The primary control may be accomplished by a certain special inhibitor located in the passage where the sperm enters the egg. The secondary control may be due to the lack of an unknown substance generally existing in the egg cytoplasm of amphimictic fish to promote the formation of male pronucleus. |
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| Keywords: | crucian carp gynogenesis double control over pyknotic male nucleus decondensation |
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