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1978年以来,我们进行了兴国红鲤×草鱼的杂交研究。杂交仔代有两种类型——鲤鱼型和草鱼型。草鱼型仔代不能存活,鲤鱼型仔代成活率为受精卵数的万分之五。当龄鱼平均体重:1978年-650克(2尾/亩);1980年-170克(140尾/亩)。最大个体300克。三龄鱼可达2250克。杂种为杂食性,摄食一部分高等植物。7月龄鱼性腺发育良好,精巢系数为3％,卵巢系数为1.6％。染色体数142-156,多数为148-152。为异源四倍体。个别的鱼包含有少量的二体细胞,染色体数为78。
Since 1978, we conducted a cross-breeding study of red carp × grass carp. There are two types of hybrid generation - carp and grass carp. Grass carp type Aberdeen can not survive on behalf of, Carp type Aberdeen generation rate of fertilization eggs for five ten thousandths. Average body weight of fish at the age of 1978 -650 grams (2 / acre); 1980 -170 grams (140 / acre). The largest individual 300 grams. Three fish up to 2250 grams. Hybrids are omnivorous, feeding on some of the higher plants. 7-month-old fish gonadal development well, the testis coefficient of 3%, ovarian coefficient of 1.6%. Chromosome number 142-156, the majority of 148-152. For allotetraploid. Individual fish contain a small amount of somatic cells with a chromosome number of 78.