多异瓢虫Hippodamia Variegata(Goeze)生物学初步研究

Study on Bionomics of Hippodamia Variegata (Goeze)

通过对通辽地区多异瓢虫HippodamiaVariegata(Goeze)的观察和研究表明 ,该虫一年发生 4代 ,主要以三四代成虫越冬。成幼虫食性较广 ,麦蚜、菜蚜、果树蚜及蒿类蚜等均捕食 ,末龄幼虫日食蚜量为 80头左右 ,成虫日食蚜量为 65头左右 ,繁殖力较高 ,一次产卵 7～ 2 4粒 ,一生产卵32～ 150粒 。

Hippodamia variegata (Goeze) is primarg species of aphids natural enemies in Tongliao area.This article was mainly concerned with the bionomics and life history of Hippodamia variegata (Goeze). The results were as the following:There were four generafions each year in Tongliao.Qverarinter with the third or fourth generafion adults mainly. The adults and larvae alimented wheat aphids,vegetable aphids and fruit aphids ,ete.Averago iusectivore of the last instar larve about 65 and adult about 80 each day.There were 7-24 granules per time and 32-150 per fermale.