日本沼虾水泥池育苗试验

Trial on Breeding of Freshwater Shrimp Macrobrachium nipponense in cement Pond

选取450只平均抱卵量为960粒/尾健康活力强的抱卵虾作为亲本进行育苗试验,并对日本沼虾蚤状幼体分期进行系统观察。结果在孵化期间共获得蚤状幼体408 240尾,孵化率为94.5%,育苗后期共获得仔虾242 086尾,蚤状幼体发育到仔虾的成活率为59.3%,蚤状幼体可分为Ⅴ期。本试验结果为今后日本沼虾人工育苗技术推广提供参考。

A preliminary breeding experiment on Macrobrachium nipponense was carried out. Totally 450 wild shrimps Macrobrachiurn nipponense, which the egg-earrying as parent, the average brood amount of shrimps were 960. And the zoea development of Macrobrachiurn nipponense was observed. The results showed that the 408240 zoeas of Macrobrachiurn nipponense were got and the hatching rate were 94.5%, 242086 post larvae were got at last and the survival rate was 59.3%. The＇progress of zoea development comprised five stages. The results provide the reference for future Macrobrachium nipponense large-scale artificial breeding.