斑鳠的人工繁殖技术研究

Study on artificial propagation technology of Mystus guttatus

2019年在广西壮族自治区来宾市桥巩水电站鱼类增殖放流站对斑鳠(Mystus guttatus)利用DOM、LRH-A2、HCG进行催产。结果表明,采用2针注射的方法,4批次催产均获成功,平均催产率57.5%,平均受精率48.7%,平均孵化率27.6%,繁殖高峰在6月;受精卵孵化受水温影响较为明显,在26~28℃孵化效果较好,出膜时间62~64 h;斑鳠卵子直径3.1~3.8 mm,出膜鱼苗全长5~6 mm,平游鱼苗全长13.5~15.5 mm。

In 2019,the fish proliferation and discharge station of Qiaogong hydropower station used DOM,LRH-A2 and HCG for arti⁃ficial oxytocin.Results showed that 4 batches of oxytocin were successful,with the 2-needle injection method.The average yield was about 57.5%,and the average fertilization rate was about 48.7%,and the average hatching rate was about 27.6%.The breeding peak was in June.The hatching of fertilized eggs was more affected by water temperature.The hatching effect was better between 26~28℃.The filming time was 62~64 h.The spot diameter of spotted eggs was 3.1~3.8 mm.The full length of the outcrop was 5~6 mm,and the length of the flat fry was 13.5~15.5 mm.