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雌核发育银鲫和两性融合发育红鲤卵母细胞成熟的细胞学比较研究
Authors
丁军
蒋一珪
Publication date
1 January 1991
Publisher
Abstract
对雌核发育银鲫和两性融合发育红鲤的卵母细胞成熟过程,进行了详细的细胞学比较研究。在银鲫卵母细胞成熟过程中,绝大部分卵母细胞的核物质,在胚泡破裂(GVBD)后的第一次成熟分裂时期,出现明显的不同于红鲤卵母细胞核的行为,其染色体逐渐清晰地分为三群,这三群染色体的发育既彼此独立又相互联系,最终形成一首尾相接的三极纺锤体。随后,三极纺锤体扭转、重叠、合并成为一个正常的中期纺锤体。但极少数银鲫卵母细胞也出现了类似于红鲤卵母细胞的成熟单星光,并进而发育成两极纺锤体,形态类似红鲤第一次成熟分裂中期纺锤体。在银鲫上述两
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 15/03/2018