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用方正银鲫()×镜鲤()所产生的全雌性后代的一部份幼鱼,投以95％酒精作性诱导剂的配制饲料,使幼鱼性转化为生理雄鱼。转化率在84％以上。此法开始处理的时间是在孵化后16—17天,处理的持续时间为30—40天。3年来,从性转化的生理雄鱼与方正银鲫雌鱼获得了无性生殖系一代,然后再从此一代获得了无性生殖系二代,以此建立了方正银鲫纯系。根据后代形态学指标、染色体数和红血球体积等确定,后代与亲本完全相似,并由此确定方正银鲫的性别决定机制,雌性为XX型,雄性为XY型。
With the Founder silver crucian carp () × mirror carp () all the female offspring of part of the juvenile, voted 95% alcohol as the inducer of the preparation of feed, the juvenile sexual into male physiological. Conversion rate above 84%. This method begins processing time is 16-17 days after hatching, the duration of treatment is 30-40 days. In the past three years, asexual germ line generation was obtained from sexual transformed male and female Founder silver crucian carp, and then the second generation of clonal germ line was obtained from this generation. According to the morphological indicators of descendants, chromosome number and the size of the red blood cells and so determined, the offspring and the parents are completely similar, and thus determine the sex determination mechanism of silver carp Founder, XX female-type, male XY-type.