提高花粉饲养伪钝绥螨繁殖力的试验

单独用苹果花粉喂养伪钝绥螨,其后代生活力降低。本文报道在苹果花粉中分别添加30％王浆水、30％蜂蜜水饲养伪钝绥螨,或用苹果花粉和朱砂叶螨交替喂食。结果表明,其后代成螨性比较单独用苹果花粉喂食者均有提高,雌成螨自食其卵现象基本消除。其中以苹果花粉和朱砂叶螨交替供食者效果最好,后代成活率明显提高。以苹果花粉为主食料,定期添加朱砂叶螨,5周后伪钝绥螨的增殖倍数与完全取食朱砂叶螨者相近。

AN IMPROVED METHOD OF REARING AMBLYSEIUS FALLACIS [ACARI:PHYTOSEIIDAE]WITH PLANT POLLEN

A. fallacis, an important biological control agent of apple spider mites, can be reared on plant pollens, including apple pollen. But the viability, ibf the descendants of A. fallacis reared on apple-pollen alone often declines. This paper describes a method of rearing A. fallacis with apple pollen plus 30% honey solution or 30% royal jelly, and a method of feeding the predator alternatively with apple pollen and the predator's natural prey, Tetranychus cinnabarins. The results showed that these new methods could; increase the female ratio in the progenies and eliminate its cannibalism. Rearing the predator with apple pollen while providing T. cinnabarinus at an Interval of 6-7 days proved to be a better method than the ones involving honey solution or royal jelly. The reproduction rate after 5 weeks was similar to that rearing the predator oh T. cinnabarinusalone.