鹰爪虾精子形成的超微结构研究  

THE ULTRASTRUCTURE OF TRACHYPENAEUS CURVIROSTRIS SPERMIOGENESIS

作　　者：吴长功[1] 周岭华[1] 相建海[1] 刘瑞玉[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071

出　　处：《海洋与湖沼》2001年第6期621-626,共6页Oceanologia Et Limnologia Sinica

基　　金：国家自然科学基金资助项目 ;3990 0 0 1 6号

摘　　要：于 1 997年 6月在青岛附近海域采集性成熟的鹰爪虾 ,采用电子显微镜技术对其精子的形成过程及形态结构特征进行研究。结果表明 ,鹰爪虾精子细胞产生于精巢的生精小管 ,在输精管内进一步发育 ,逐渐形成成熟的精子 ,许多精子在输精管内聚集成团 ,外包胶质膜 ,形成许多精子囊。精子入海水中不运动。鹰爪虾精子后部具有特殊的细胞质区 ,内含有大量囊泡及膜层体。棘突从体部前端横向伸出 ,由许多纤丝平行紧密排列组成 ,外包质膜。Trachypenaeus curvirostris was captured in the seawater near Qingdao in June 1997. Spermiogenesis, sperm morphology of T. curvirostris were studied by using electronic microscope. Results indicate that the sperm cells are produced in test is and developed into mature sperms in vas deferens. Its developmental process includes formation of spike, differentiation of cytoplasm, formation of vesicles and membrane bodies and changes of nuclear and membrane. Sperms assembled together to form sperm sacs surrounded by jelly coats. The sperms are non motile in seawater. Morphologically, sperm consists of spike and main body, and its internal ultrastructure includes spike, cap, nuclear in center and cytoplasm at the rear end. Protruding slantly from the front, spike is composed of many parallel protein fibrils, and surrounded by membrane. With simple structure, cap is composed of high density electronic materials. Cytoplasm area has many vesicles and membrane bodies. No obvious morphological difference is observed between sperms from male sperm sac and those from female thelycum. The morphology of T. curvirostris sperm is special, different from that of other related shrimp sperms.

关 键 词：鹰爪虾 精子形成 预体 超微结构 形态 结构 输精管 精巢 贮精囊 

分 类 号：Q959.223[生物学—动物学]