摘要
本文研究了斜纹夜蛾长距姬小蜂的生物学特性，结果表明，实验室条件下，斜纹夜蛾长距姬小蜂单雌最大产卵量为139粒，平均产卵量为73.69粒；卵主要产在斜纹夜蛾幼虫的1～4腹节背面，少部分产在侧面，不产于寄主腹面；单寄主上通常产卵1～5粒，有时为6～9粒；喜寄生2、3龄斜纹夜蛾幼虫，偶尔寄生1龄幼虫，但绝大部分不能完成其生命历期；当寄主斜纹夜蛾2龄、3龄初、3龄末幼虫同时存在时，其偏爱寄生3龄初幼虫，偏好系数为0.65、发育历期为9.93±0.19 d。
The biological characteristics ofEuplectrus laphygmaeFerriere, which was a gregarious ectoparasitoid of the larvaeSpodoptera litura （Fabricius）, were studied in this paper. The results showed that the largest numbers of eggs laid by one femaleE. laphygmae was 139, and the average numbers was 73.69 in the laboratory.E. laphygmae female laid 1-5 eggs on one individualS. litura larvae （sometimes 6-9 eggs）, the eggs were laid on the back of the 1-4 abdominal segments mostly, with fewer on the lateral side and none on the venter.E. laphygmae mostly parasitized the 2nd, 3rd instar larvae ofS. litura,in which early 3rd instar larvae were most preferred host, with the preference index was 0.65 and the developmental duration from egg to adult was 9.93±0.19 days.
出处
《中国生物防治学报》
CSCD
北大核心
2014年第4期453-459,共7页
Chinese Journal of Biological Control
基金
"十二五"国家科技支撑计划项目(2012BAD27B02)
关键词
斜纹夜蛾长距姬小蜂
斜纹夜蛾
形态学特征
生物学特性
偏好性
Euplectrus laphygmae
Spodoptera litura
morphological characters
biological characteristics
preference
