剑尾鱼精巢的显微和超微结构观察  

Observation on the Microstructure and Ultrastructure of the Testels in Swordtail(Xiphophorus helleri)

作　　者：温茹淑[1] 曾德莉[1] 方展强[2] 

机构地区：[1]嘉应学院生命科学学院,广东梅州514015 [2]华南师范大学生命科学学院,广东省高等学校生态与环境科学重点实验室,广东广州510631

出　　处：《华南师范大学学报（自然科学版）》2012年第4期113-116,共4页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省科技计划项目(2012B030800006);梅州市科学技术局自然科学研究项目(08KJ23)

摘　　要：对性成熟卵胎生鱼类剑尾鱼(Xiphophorus helleri)的精巢进行了显微和超微结构的观察.结果显示,剑尾鱼具一对索状精巢,其内部呈小管型.精巢内每一精小囊的生殖细胞发育同步,从精子发生到成熟精子的形成,精小囊逐渐由小管盲端向中央腔方向移动,在迁移过程中逐渐发育.剑尾鱼的精子发生经过精原细胞,初级精母细胞,次级精母细胞,精细胞及变态精子、成熟精子等阶段.剑尾鱼成熟精子分为头部、中段、尾部3个部分.The microstructure and uhrastructure of the spermatogenesis in Swordtail （Xiphophorus helleri） were studied with microscope and transmission electron microscope. The results showed that the adult＇ s spermary likes two trabs, Its internal structure is of a small pipe type. The generated cells of each bursula in spermary grow at equal pace. From spermatogeny to spermium, the bursula moves gradually from caecum in canoula to central, and the generative cells grow gradually. The spermatogenesis of Xiphophorus helleri needs go through several phases, such as spermiogonium, primary spermatocyte, second spermatoeyte, spermatid, spermiogenesis and mature sper- mium. The spermium consists of head, midportion and tail.

关 键 词：剑尾鱼 精巢 组织结构 超微结构 

分 类 号：Q954.2[生物学—动物学]