| 塔形马蹄螺精子发生的超微结构研究 |
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| 引用本文： | 吴洪流,蒲利云,冯永勤,董杨,刘璐,严俊贤.塔形马蹄螺精子发生的超微结构研究[J].热带生物学报,2010,1(1):21-26. |
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| 作者姓名： | 吴洪流 蒲利云 冯永勤 董杨 刘璐 严俊贤 |
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| 作者单位： | 热带生物资源教育部重点实验室(海南大学),海南大学,海洋学院,海南,海口,570228 |
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| 基金项目： | 海南省教育厅自然科学资助项目，海南省自然科学基金项目 |
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| 摘 要： | 应用透射电镜显微镜技术观察塔形马蹄螺(Trochus pyramis Born)精子的发生过程。结果表明:塔形马蹄螺精子的发生历经精原细胞、初级精母细胞、次级精母细胞、精细胞和成熟精子5个阶段。精原细胞呈近椭圆形,染色质分布较均匀,线粒体较少;初级精母细胞较大,染色质凝聚成小块状,线粒体增多;次级精母细胞较初级精母细胞小,线粒体较多,部分线粒体发生融合,呈扁囊状。精细胞的分化可分为5期,主要特点为:Ⅰ期,一些高电子致密颗粒参与顶体的形成;Ⅱ期,核形态由椭圆形到近圆形,再逐渐拉长为长圆柱状;Ⅲ期,核染色质以颗粒状形式凝集成较大的团块;Ⅳ期,线粒体逐步融合、体积增大和嵴发达;Ⅴ期,中心体移动及鞭毛形成,核内染色质凝聚成高电子密度均质化,胞质逐渐减少。成熟精子为原生型,由头部、中段和尾部(鞭毛)3部分组成。
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| 关 键 词： | 塔形马蹄螺 精子发生 超微结构 |
Ultra-structure Study on Spermatogenesis of Trochus pyramis Born |
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| WU Hong-liu,PU Li-yun,FENG Yong-qin,DONG Yang,LIU Lu,YAN Jun-xian.Ultra-structure Study on Spermatogenesis of Trochus pyramis Born[J].Journal of Tropical Biology,2010,1(1):21-26. |
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| Authors: | WU Hong-liu PU Li-yun FENG Yong-qin DONG Yang LIU Lu YAN Jun-xian |
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| Institution: | WU Hong-liu,PU Li-yun,FENG Yong-qin,DONG Yang,LIU Lu,YAN Jun-xian (College of Marine Sciences,Hainan University,Haikou 570228,China) |
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| Abstract: | Transmission electron microscopy was used to observe the ultra-structure of spermatid of Trochus pyramis Born at different stages. The results indicated that the spermatogenesis of Trochus pyramis Born included following five stages:spermatogonium,primary spermatocyte,secondary spermatocyte,spermatid and spermatozoon. The shape of spermatogonium was ellipsoidal and there were few mitochondria,the distribution of chromatin uniform; the shape of primary spermatocyt was much bigger,the chromatin agglomerated a... |
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| Keywords: | Trochus pyramis Born spermatogenesis ultra-structure |
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