摘要
皱纹盘鲍（Ｈａｌｉｏｔｉｓｄｉｓｃｕｓｈａｎｎａｉ）的精子属于“原始型”，由顶体（２．２μｍ×１．０μｍ）、细胞核（３．１μｍ×０．８３μｍ）、中段（０．７４μｍ×１．４μｍ）和鞭毛（５２μｍ×０．２２μｍ）组成。顶体弹头状，由两部分组成：（１）顶体的前端是一呈卵形的高电子密度的部分；（２）顶体的后端为一呈翼状的低电子密度的部分。细胞核呈长柱状。在顶体凹陷和细胞核凹陷之间为顶体下腔，内有微丝束结构。中段包括５或６个线粒体，一对中心粒及一些泡状结构。鞭毛为典型的“９＋２”结构。
The sperm of the ablone, Haliotis discus hannai, consists of a bullet shaped acrosome (2.2μm×1.0μm), a nucleus (3.1μ×0.83μm), a midpiece (0.74μm×1.4μm) and a flagellum (52μm×0.22μ). The large acrosome contains two distinct components: 1) an ovoid eletron dense body in the anterior apex of the acrosome; 2) a less dense, homogeneous material at the acrosome posterior. A bundle of microfilaments protrude from the nuclear fossa into the acrosomal fossa. The midpiece consists of 5 or 6 mitochondria, a pair of centriole and several vesicles. The sperm is of the 'primitive' type.
基金
国家"攀登计划
关键词
皱纹盘鲍
精子
超微结构
鲍鱼
Haliotis discus hannai
spermatozoa
ultrastructure
