推迟供卵条件下卷蛾分索赤眼蜂的生殖对策  

The Reproduction Strategy of Trichogrammatoidea bactrae in Hosts Suspending

作　　者：陈科伟[1] 黄寿山[1] 吴伟坚[1] 

机构地区：[1]华南农业大学昆虫生态研究室,广东广州510642

出　　处：《华南农业大学学报》2002年第1期35-37,共3页Journal of South China Agricultural University

基　　金：国家自然科学基金资助项目 (39870 4 39)

摘　　要：通过推迟供卵的方法考察了卷蛾分索赤眼蜂 (Trichogrammatoideabactrae)在寄主缺乏情况下的生殖策略 .结果表明 ,在短期 (羽化后 4d内 )缺乏寄主条件下 ,卷蛾分索赤眼蜂具有一定的适应性 ,在恢复供卵首日的寄生卵量有所提高 ,且其繁殖力和成虫寿命没有受到明显的影响 ;在长期 (羽化后 8d内 )缺乏寄主情况下 ,卷蛾分索赤眼蜂没有积极的生殖对策 ,其群体繁殖力和寿命都受到不同程度的削弱 .在此基础上提出了在利用赤眼蜂自然控制目标害虫的过程中 ,尤其是在目标寄主匮乏时 。The reproduction strategy of Trichogrammatoidea bactrae Nagaraja was analyzed when the host availability suspended. It was showed that T. bactrae could adjust its reproduction strategy when the host was unavailability in a short period (4 days after emergence). Its oviposition was improved on the first day when hosts were availability, while their reproduction potential and female longevity were weakened. However, T. bactrae' s reproduction potential and female longevity were significantly reduced when host was unavailability in a long period (8 days after emergence). Based on such reproduction strategy of Trichogrammatoidea bactrae , it was helpful to take some protection or augmentation measurements to improve its reproduction potential when host was unavailability in field.

关 键 词：卷蛾分索赤眼蜂 推迟供卵 生殖策略 天敌 小菜蛾 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治] S433.4[农业科学—植物保护]