长臀鮠的人工繁殖试验

Artificial Propagation of Cranoglanis bouderius

为长臀鮠的生产性繁殖和深入研究奠定基础,用马来酸地欧酮(DOM)、促黄体激素释放激素类似物(LRH-A2)和绒毛膜促性腺激素(HCG)组成混合催产剂催产4～5龄长臀鮠亲鱼47尾。结果表明:产卵率达75.75%,受精率为68.6%,孵化率为74.85%,鱼苗成活率达34.7%。用100目筛绢捞取个体较小的轮虫作为长臀鮠鱼苗的开口饵料,是苗种培育成功的关键技术措施。

47 4~5 years old parent C.bouderius fish were treated with the mixed odinagogue of DOM,LRH-A2 and HCG lay a foundation for productive propagation and further research of C.bouderius.The results showed that the egg laying rate,fertilization rate,hatching rate and survival rate were 75.75%,68.6%,74.85% and 34.7% respectively.Small rotifers collected from the bluteau with 100 meshes was the optimum bait for C.bouderius fries,which was the key technical measure to culture C.bouderiu fries successfully.