虹鳟在赛里木湖生长发育的初步研究

Priliminary study on the growth and developing of rainbow trout(Oncohrynchus mykiss)in the lake of sailimu

2004年向赛里木湖放流不同规格虹鳟42.76万尾,通过两年的监测,虹鳟能适应赛里木湖生态条件,生长迅速,0^+龄即可达到477g。在该湖虹鳟主要以钩虾为食,对其他鱼类影响不大。虹鳟可在湖中性腺发育成熟,但自然繁殖困难。通过增殖放流,现已获得了商业捕捞产量,这为开发利用赛里木湖开辟了新的途径。

42.76 × 104 rainbow trout juveniles were stocked into salimu lake in 2004. By monitoring and investigating for 2 years, this fish was found not only to adapt to the ecology condition in salimu lake, but also growed fast; body weight of 0 ^＋ aged fish can reach 477g. Investigation indicated that rainbow trout preyed mainly on Gammarus, doing little harm to other fish. In addition, this fish can mature in this lake, but hard to reproduce naturally. By stocking, commercial mass of rainbow trout were made in sailimu lake, breaking a new way to proliferate this lake.