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.
出处
《水产学报》
CAS
CSCD
北大核心
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)
