斜纹夜蛾抗药性及其防治对策的研究进展

Insecticide resistance of the common cutworm(Spodoptera litura)and its control strategies.

斜纹夜蛾Spodopteralitura是多种作物的重要害虫 ,对有机氯、有机磷、氨基甲酸酯类、拟除虫菊酯类以及Bt制剂等杀虫剂均产生抗药性。本文对斜纹夜蛾抗药性的形成与发展。

The common cutworm, Spodoptera litura, a major pest to a variety of crops, is known to be resistant to many kinds of insecticides, such as organochlorines, organophosphorus, cabamates, pyrethroid and Bacillus thuringiensis (Bt) formulations, etc. The factors affecting the formation and development of insecticide resistance include genetic factor, biological factor and operational factor. The biological factor in S.litura is shown by its productivity, polyphagy, migration and activities. Mechanisms of pyrethroid resistance in S. litura was accompanied by enhanced metabolic detoxification of multifunctional oxygenase (MFO). And that of organophosphorus had relation with increased activity of MFO and esterase. Bacteriostatic and inducible bactericidal activities were the factors involved in the resistance of S. litura to Bt. The control strategies of insecticide resistance on S. litura consist of IPM, appropriate application of insecticides, use of natural enemies and nuclear polyhedrosis viruses (NPV).