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用施氏鲟同西伯利亚鲟和小体鲟进行正反杂交试验,比较3种鲟鱼纯种及杂交种后代连续两年的育苗指标得出如下结论:杂交种后代同大部分纯种的发育速度及有效积温差异不明显,但同母本更为相近;3种鲟鱼纯种的受精率、出苗率、开口率、转口率、成活率高于大部分杂交种,其中成活率差异特别明显(P<0.01)。同年度不同杂交种间成活率差异有较大变化,比较不同年份小体鲟♀×施氏鲟♂的成活率有明显差异(P<0.01),这与纯种亲本成活率变化一致,但施氏鲟与西伯利亚鲟杂交种差异不明显;施氏鲟♀×小体鲟♂连续两年的成活率为0,其他3个杂交种的成活率均达到30%以上。
The crossbreeding test between Siberian sturgeon and Siberian sturgeon was carried out. The breeding indexes of three sturgeon purebreds and their offsprings for two consecutive years were compared. The results showed that the offspring of hybrids had the same growth rate with most purebred And effective temperature difference is not obvious, but more similar with the female parent; three kinds of sturgeon purebred fertilization rate, the emergence rate, opening rate, re-export rate, survival rate than most hybrids, of which the difference was particularly significant survival rate P <0.01). There was a significant difference in the survival rate among different hybrids in the same year. Comparing the survival rates of different sturgeon (Acipenser schrenckii × Shikuishu sturgeon) in different years, there was a significant difference (P <0.01) Acipenser schrenckii and Siberian sturgeon hybrids showed no significant difference. Survival rate of Acipenser schrenckii × small body sturgeon was 0 for two consecutive years, and the survival rate of the other three hybrids reached more than 30%.