应用生命表评价食蚜瘿蚊扩繁系统

应用生命表技术，考察我国食蚜瘿蚊Aphidoletes aphidimyza大量扩繁系统主要环节的效率。结果表明，卵期、1龄幼虫期、蛹期的死亡率较大，分别为13.5%、18.2%和19.0%，是影响种群数量增长的主要因子。通过对各发育阶段的观察，初步明确了造成死亡的主要因素，连续多代饲养中的性比失调问题对卵的饱满率及产卵量有很大影响,化蛹的场所条件、发育及贮藏条件、1龄幼虫的食物供给状况也是造成实验种群大量死亡的主要因子。本实验结果为进一步改进该天敌的扩繁体系，提高扩繁效率，具有指导作用。

The efficiency evaluation of the mass propagation system ofAphidoletes aphidimyza by life table

This paper deals with evaluation of the mass propagation system of Aphidoletes aphidimyza using life table. It was showed that high mortalities in the stages of egg(13.5%),1st instar larvae (18.2%) and pupae (19.0%) were the main factors influencing the growth of the experimental population. Abnormal sex ratio caused by the propagation of many successive generations also resulted in reducing viability of the experimental population.These results suggest that the existing propagation system needs to be improved.