摘要
采用平均体重为 0 5kg的加州鲈 (Micropterussalmoides)亲鱼雌雄各 2 2 1尾 (2 2 1对 ) ,人工催产 3d后开始产卵 ,经 40d共产卵 988批 ,889 2万粒。出苗 711 4万尾 ,孵化率 80 %。经 2 0～ 30d的培育共获 2～ 5cm的幼鱼 370万尾 ,成活率 5 2 %。结果表明 :加州鲈具有极强的繁殖力 ;其卵母细胞具有分批成熟、分批产卵的习性 ;加州鲈亲鱼的产卵量与卵母细胞成熟度有关 ,与温度无关。
In this test,221 couple of Micropterus salmonoides parent fish,whose average weight was 0 5 kg,were artificially hasten parturition; and spawned after three days.During the next 40 days,they laid 8.892×10 6 eggs,the amount of nests was 998, 7.114×10 6 fish fries were born,the incubation rate was 80 %.These fish fries had been reared for 20 to 30 days,and 3 7×10 6 fish fries of 2.0 ～5.0 cm long were alive.The surival rate reached 52 % The results showed that the fecundity of Micropterus salmonoides was very strong;its egg cells usually matured and spawned in turn.The quantity of spawn was retated to mature level of egg cells, and had nothing to do with temperature.
出处
《水产科学》
CAS
北大核心
2001年第4期21-23,共3页
Fisheries Science
关键词
加州鲈鱼
人工繁殖
性腺发育
鲈鱼
Micropterus salmonoides
artificial propagation
gonadal development
