舟蛾赤眼蜂生物学特性

Bionomics of Trichogramma closterae Pang et Chen.

舟蛾赤眼蜂在淮北地区自然界能安全越冬，每年完成２０～２２个世代。环境温湿度、风和光照等自然因子对其发育和活动有明显影响，发育的适宜温度为２４．９～２８．７℃，相对湿度为８０％左右。常年平均寄生率为 １４．８１％；垂直向上活动范围可达 ６～８ｍ，水平扩散可达 ３５ｍ。

Trichogramma closterae Pang et Chen can overwinter safely in natural conditions in Huaibei region and has 20-22 generations each year. The natural factors,such as temperature, humidity, wind, illumination, etc., have an obvi- ous influence upon its growth and movement.The temperatUre fit to its growth ranges from 24.9-28.7℃, and the rela- tive humidity 80% or so. The adult has photoed. In nature its quantity shows a curve change with considerable fluc- tuation.It can parasitize over eighty kinds of insect eggs. The average parasitic rate in nature is 14.81% all the year round.The territory of its activities is wide.It can expand as high as 6-8 meters and as far as 35 meters.