摘要
用透射电镜技术研究了秀丽白虾精子的形态结构 ,结果表明 :秀丽白虾精子属无鞭毛、单棘型精子。其外形呈图钉样 ,由主体部和棘突构成。主体部包括帽状体、细胞质带和精核。帽状体由约 2 0根辐射状排列的纤丝组成 ,纤丝具横纹。其凸面延伸成棘突 ,棘突内纤丝是帽状体内纤丝的延续 ,亦具横纹。凹面包裹细胞质和精核。细胞质退化 ,无细胞器。精核为非浓缩型 ,核膜不完整。核质呈丝状 。
The sperm ultrastructure of Exopalaemon modestus was investigated by transmission electron microscopy(TEM) technique.The results indicate that the sperm is nonflagellated and composed of a main body in which including nucleus?apical cap and a little cytoplasm and a single spike extending from the convex surface of the apical cap,which consists of about twenty radial fibrillae on which exhibiting periodic cross-striations.The concave surface of the apical cap surrounds the little cytoplasm which is highly condensed and hasn't any organelles and sperm nucleus,which is uncondensed and composed of filamentous materials and many membrane-bound vesicles.
出处
《东海海洋》
2002年第2期45-50,共6页
Donghai Marine Science
基金
湖州师范学院科研项目 ( 2 0 0 1 Z0 0 8)
