野生翘嘴红鲌的驯养及人工繁育试验

本研究以闽江流域野生翘嘴红鲌鱼苗为试验材料,经饵料驯化,使其食用人工配合饲料,再经过3年水库网箱养殖,使其完全适应网箱生活环境,养成平均尾重1.2 kg,且性成熟具备繁殖能力的翘嘴红鲌亲本。分别于2005、2006年优选自育的性成熟翘嘴红鲌个体为亲本,经过2个多月的强化培育至6月份,开展人工繁殖试验,采用LRH-A2(促黄体生成素释放激素类似物)+HCG(绒毛膜促性腺激素)的混合剂作为人工催产剂,经自然产卵、受精孵化、鱼苗培育,共获翘嘴红鲌夏花鱼苗160.2×104尾。

Experiments of domestication and artificial breeding of Erythroculter ilishaeformis

Wild Erythroculter ilishaeformis fry in Minjiang river basin was taken as experimental material,which was fed with artificial formula feed after feed domestication.After three years of net cage culture in reservoirs,the wild fish completely adapted to the living environment of net cage and parent Erythroculter ilishaeformis with the mean weight of 1.2 kg,which had sexual maturity and reproductive capacity were attained.In 2005 and 2006,the selected parents Erythroculter ilishaeformis cultivated from themselves were used for conducting artificial breeding experiments in June after two months of intensive cultivation.Using the mixture of LRH-A2 and HCG as artificial injection oxytocin,and after natural spawning,fertilization,hatching,and fry rearing,we attained a total of 160.2×104 Erythroculter ilishaeformis fries.