异源精子激发彭泽鲫雌核发育子代的表型分化现象

Phenotypic Differentiation of Offspring Developed from Pengze Crucian Carp Eggs Activated by Heterlogous Sperm

种苗生产过程中 ,通过人工催情 (彭泽鲫雌鱼两次注射LRH A2 与HCG的混合物 ,尖鳍鲤雄鱼一次注射鲤鱼脑垂体 )获得卵和精 ,人工再行两种配子的混合。子代有 3种表型 :Ⅰ .雌性 ,形态同母本 ,为异种精子激发雌核发育的后代 ;Ⅱ .雄性 ,形态同母本 ,产生机理不明 ;Ⅲ .类似母本 ,但有一些父本特征 ,暗示有某重程度的核融合。子代中只有类型Ⅰ的情况最常见 ,只有或主要有类型Ⅱ的次之 ;类型Ⅲ时有发生 ,但比例 <1%。

Pengze crucian carp eggs and sea carp sperm,which were artificially produced by the injection of LRH A 2 and HCG for females and pituitary for males,were mixed in fry production.Three types of offspring were observed:Ⅰ,females,phonotypically the same as the mother,developed by eggs activated by sperm of see carps;Ⅱ,males,also as the mother,but developed in a unknown way;Ⅲ,similar to the mother but with a few paternal characters,indicating some occurrence of the mixis.Type I only appeared most often in the offspring;type Ⅱ only or mostly occurred sometimes;type Ⅲ occasionally presented,and if seen it was <1% of the fries.