饲养水平和遗传特性对XX;mas-1/mas-+鲤鱼(Cyprinus carpioL)性别决定的影响(英文)

The Effect of Feeding Level and Genetic Background on Sex Determination in XX; mas-1 / mas-+ Common Carp ( Cyprinus carpio L.)

饲养水平对E4×E5 (XX ;mas- +/mas- +×XX ;mas- 1/mas - 1)鲤鱼 (CyprinuscarpioL )F1代的性别决定有显著影响 ,高饲养水平和低饲养水平处理组中雌性比率分别为 5 1 5 %和 4 1%。遗传特性对E4 5×E5 (XX ;mas- 1/mas - +×XX ;mas- 1/mas- 1)F1代的影响比饲养水平的影响显著 ,在 2个处理组中只发现 1～ 2尾雌性。 2个饲养水平对E4×E4 5 (XX ;mas- +/mas- +×XX ;mas- 1/mas - +)F1代的影响差异显著 ,高饲养水平 2个处理组中雌性比率分别为 86 2 %和 76 8% ,而低饲养水平 2个处理组中雌性比率分别为 76 8%和 5 7 9% ,高饲养水平处理组的雌性比率与低饲养水平处理 1组 (雌性比率 5 7 9% )相比差异显著。 2个饲养水平条件下E4×E5和E4×E4 5后代的XX ;mas - 1/mas - +鲤鱼性别转化率之间没有显著差异。

The effects of feeding level and genetic background on sexual determination of XX; mas -1/ mas -+ common carp ( Cyprinus carpio L ) were investigated The effect of feeding level on a F 1 hybrid of E4×E5 (XX; mas -+/ mas -+ × XX; mas -1/ mas -1) clone was highly significant, high feeding level (HFL) groups contained 51 5% females while only 4 l % females were found in the low feeding level (LFL) groups In the backcross of a F 1 hybrid of E45×E5 (XX; mas -1/ mas -+×XX; mas -1/ mas -1) clone, genetic background was more important than feeding level In both treatment groups only 1～2 females were found The third progeny was a backcross of F 1 hybrid of E4×E45 (XX; mas -+/ mas -+×XX; mas-1/mas -+) clone,the frequency of females in the HFL groups (86 2% and 76 8% respectively) was significantly different from those of one LFL group (76 8 %) but not of the other (57 9%) There was no significant difference in the rate of sex reversal of XX; mas-1/mas -+ common carp between the E4×E5 and the E4×E45 offspring at both feeding levels