桃蛀果蛾在不同寄主上有关生物学特性差异的研究

枣和酸枣桃蛀果蛾生物学特性异于苹果桃蛀果蛾。在适宜温湿度下,枣和酸枣桃蛀果蛾越冬幼虫出土始期和高峰期分别比苹果桃蛀果蛾晚8d和20多d,田间成虫发生期也晚约20d。恒温条件下,前两者的前蛹期+蛹期也均比后者短。桃蛀果蛾多产卵于枣果临近的叶背基部和酸枣梗洼处。幼虫在酸枣中需生活40～50d,一年发生1代。提出了桃蛀果蛾不同的“寄主生物型”概念。

The Biological Character Differences of Carposina niponensis Walsingham Living on Different Hosts

There are some differences in the biological characters of the peach fruit moth,Carposina niponensis Walsingham, lived on jujubes,the wild jujubes and apples. The initial time and the peak time that the wintered larvae come out of the ground as well as the adult emergence time in the field, which live on jujubes and wild jujubes,delayed 8 days and 20 days as well as about 20 days respectively later than the ones of which live on apples in the suitable temperature and humidity. The pre-pupate and pupate stage of the former are shorter than that of the latter. The eggs of peach fruit moth are deposited at the back of the leaf base on the jujubes or at the hollow of the fruit base on the wild jujubes. There is one generation a year. The period of the larvae is 40~50 days,which is about 2 times of that living on apples. As a result,studies suggest a new concept of different"host bio-types "of the peach fruit moth.