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2 水产动物性别控制技术的实践和展望 2.1 单性苗种实践罗非鱼某些组合的种间杂交,其杂种的雄性比率达90％以上,甚至100％。该技术已广泛应用于生产。有效控制了养殖群体的过剩繁殖,增加商品鱼的规格和养殖产量1.5倍以上,取得了较大的经济效益。性激素诱导反转的单性群体的养殖,在全雌性莫桑比克罗非鱼、鲤鱼、虹鳟等许多鱼类有明显增产效果。中科院水产所采用杂交方法,使方正银鲫雌鱼与兴国红鲤雄鱼授精获得了具有生长优势的雌核发育后代“异育银鲫”,其生长
2 Practice and Prospect of Sex Control Techniques for Aquatic Animals 2.1 Uniparental seed practices The interspecific hybridization of some combinations of tilapia has a male ratio of over 90% or even 100% of the hybrids. The technology has been widely used in production. Effective control of the breeding population of excess reproduction, increase the size of commercial fish and aquaculture production 1.5 times more, and achieved greater economic benefits. Sex hormones induced reversal of the herd breeding, in all females Mozambique tilapia, carp, rainbow trout and many other fish have a significant increase in yield. Chinese Academy of Sciences aquaculture by hybridization method, so that female Founder silver carp and Xingguo red carp to obtain fertile male gynogenetic growth progeny of “allogynogenetic crucian carp”, its growth