桃蛀果蛾寄主间生活史与杂交研究

The Seasonality and Hybridization in Carposina sasakiiMatsumura(Lepidoptera :Carposinidae) from Different Plants

在２５℃恒温、１４．５～１５．０ｈ光照条件下，比较了杏、苹果、枣、桃、酸枣、山楂、海红、石榴等８种寄主上桃蛀果蛾越冬幼虫出土和成虫羽化的时间差异，并进行了杂交试验。结果表明，幼虫出土和成虫羽化时期在寄主间差异明显；不同寄主来源的成虫间容易杂交，并产生可育的Ｆ＿１代。Ｆ＿１代滞育率差异悬殊，表明不同寄主上的桃蛀果蛾临界光周期有差异。

Experiments on the seasonality and crossing of the peach fruit moth,Carposina sasakii Matsumura , among different host plants were conducted in lab at aconstant temperature of 25℃ and a photoperiod of15 L:9 D.The results show that theseasonal histories of the moth differ markedly among various plants , but are synchro-nized with the fruiting phenology of the very plantthe moth originates from, The mothsfrom different plants are easy cross and produce fertile F_l offsprings. The diapaucing in-cidences of the grown larvae on different plantsdiffer greatly under the same condition,suggesting that have different photoperiodic responses.