长江华溪蟹(Sinopotamon yangtsekiense)精子的形成  

SPERMIOGENESIS IN THE CRAB, SINOPOTAMON YANGTSEKIENSE (CRUSTACEA, DECAPODA)

作　　者：刘芳[1] 谈奇坤[1] 

机构地区：[1]安徽师范大学生物系

出　　处：《安徽师大学报》1997年第3期242-246,共5页

基　　金：安徽省教委自然科学基金

摘　　要：透射电镜下观察长江华溪蟹精子形成的过程．早期精细胞中发现有典型的高尔基体形成前顶体囊泡，前顶体囊泡融合形成ＰＡＳ阳性顶体囊泡；后期精细胞在与头帽相对一端的顶体囊泡中央发生凹陷形成ＰＡＳ阴性的中央管；成熟精子的染色质（Ｆｅｕｌｇｅｎ阳性）呈现出网结纤丝状和致密块状．根据长江华溪蟹精细胞的顶体分化过程及染色质的形态变化，可将精子形成过程分为六个时期，即前顶体囊泡形成期、顶体囊泡形成期、顶体头帽期、顶体中央管形成期、未成熟精子期和成熟精子期．Spermiogenesis in the crab Sinopotamon yangtsekiense was examined using Transmission Electron Microscopy. The PAS positive acrosome, derived from the fusion of proacrosomal vesicles which produced by Golgi body in the early spermatid. In the late spermatid, one side of the acrosomal vesicle invaginates to form a PAS negative central canal. The mature sperm has a clumped, branched and anastomosed chromatin filaments. According to the process of the differentiation of the acrosome and the pattern changes of the chromatin, the process of spermiogenesis has been divided into six stages.

关 键 词：长江华溪蟹 精子 精子形成 

分 类 号：Q959.223[生物学—动物学] Q954.434