桉树枝瘿姬小蜂生物学特性和有效积温研究

Study on the Biology and Effective Accumulated Temperature by Leptocybe invasa at Eucalyptus

桉树枝瘿姬小蜂在广州1年完成4世代,以幼虫和蛹在虫瘿内越冬,第1代至第4代的历期分别为100,64,68,133 d。在变温状态下,发育起点温度0.00±0.03℃,有效积温1 776.40日度。在我国华南桉树种植区,海南岛南部和西部沿海地区为年发生5世代区,海南岛中部和北部、广东省全境、广西壮族自治区中南部地区、云南省南部地区和福建中南部沿海地区为年发生4世代区,其他桉树种植区为年发生3世代区。

Leptocybe invasa produces four generations a year in Guangzhou city,lives through the winter as the nymph and pupae,the first generation to 4th generation had the longest life span respectively for 100,64,68 and 133 days.In variable temperature condition,developmental starting point 0.00±0.03℃,effective accumulated temperature 1 776.40 day degrees.In eucalyptus grows areas in south China,the south and west coastal areas of Hainan island happened 5 generations in a year,the central and north of Hainan island,Guangdong province,the central and south of Guangxi municipality,the south of Yunnan province and the south-central coastal of Fujian province happened 4 generations in a year,other areas happened 3 generations in a year.