史氏鲟精子入卵过程的扫描电镜观察  

Scanning electron microscopic observation on sperm penetration of Acipenser schrenckii

作　　者：曲秋芝[1] 孙大江[1] 马国军[1] 邱岭泉[1] 王丙乾[1] 

机构地区：[1]中国水产科学研究院黑龙江水产研究所,黑龙江哈尔滨150070

出　　处：《水产学报》2003年第4期377-380,共4页Journal of Fisheries of China

基　　金：国家"十五"攻关项目资助(2001BA505B506)

摘　　要：The observation indicates the head length of sperm 6.5μm,the top of broad-head 1μm,the lower part of head 1μm,neck 0.5μm and tail length 16μm under scanning electron microscope (SEM).The sperm’s tail has axle and two wings. There are 6-9 micropyles on the animal pole of the mature egg of Acipenser schrenckii, all of which are able to accept sperm.The micropyle’s outer diameter is 18μm and inner 6μm.There are micropyle cells filling in micropyle.The micropyle cells disappear after fertilization 10s. The micropyles are sealed with membrane after sperms penetrating. The fertilization is got through about in two minutes.The sperms not penetrating egg are blocked on the way. Amur sturgeon’s sperm and mature egg are different from those of other sturgeons.The observation indicates the head length of sperm 6.5μm,the top of broad-head 1μm,the lower part of head 1μm,neck 0.5μm and tail length 16μm under scanning electron microscope (SEM).The sperm's tail has axle and two wings. There are 6-9 micropyles on the animal pole of the mature egg of Acipenser schrenckii, all of which are able to accept sperm.The micropyle's outer diameter is 18μm and inner 6μm.There are micropyle cells filling in micropyle.The micropyle cells disappear after fertilization 10s. The micropyles are sealed with membrane after sperms penetrating. The fertilization is got through about in two minutes.The sperms not penetrating egg are blocked on the way. Amur sturgeon's sperm and mature egg are different from those of other sturgeons.

关 键 词：史氏鲟 精子 入卵过程 扫描电镜观察 成熟卵细胞 外部形态 

分 类 号：S965.215[农业科学—水产养殖]