鱼类精子活力研究进展

鱼类精子在精巢和精浆中一般不活动，只有当精子被排到体外并被外界环境的溶液稀释后才能活动．鱼类精子活力受渗透压、离子、ｐＨ 值、温度及ＣＯ２ 等因子的调节和影响， 不同的鱼类其精子活力有不同的调节方式；外界因子对鱼类精子活力的影响， 是通过影响ｃＡＭＰ－ＡＴＰ－Ｍｇ２＋ 系统来影响鞭毛的活动而实现的． 精子活力的评价指标主要有：精子激活后的运动时间、精子激活比例、精子运动速度及精子鞭毛摆动频率等． 大多数鱼类的精子，其活动能力是在生殖管道中获得的．

Advancein Fishes Sperm Motility

Fish spermatozoa are general immotile in the testis and sperm plasma, motility is induced after the discharge of sperm into the aqueous environment.The motility are influence by osmolality,ion,CO 2 and pH value. The environmental factors which activate cAMP ATP Mg 2 system will affect spermatozoa motility. Motility of spermatozoa were measured by the duration of their movement, the percentage of motile sperm, their velocity and flagella beat frequency. The changes of sperm motility in the genital tract of fishes are also been discussed..