推迟供卵条件下卷蛾分索赤眼蜂的生殖对策

通过推迟供卵的方法考察了卷蛾分索赤眼蜂（Trichogrammatoidea bactrae)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，应采取相应的田间保护和增强措施。

The Reproduction Strategy of Trichogrammatoidea bactraein Hosts Suspending

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.