甜菜夜蛾对虫酰肼的抗药性研究初报

Preliminary Study on Resistance of Spodoptera exigua to Tebufenozide

摘要: 在室内用虫酰肼对甜菜夜蛾幼虫进行抗药性选育,经过12代汰选,甜菜夜蛾对虫酰肼产生了5.47倍的抗性,抗性发展缓慢。该种群对甲氧虫酰肼有一定交互抗性,对有机磷、氨基甲酸酯、拟除虫菊酯类等多种杀虫剂都不存在交互抗性,抗性比值在0.83~1.63倍之间。

Abstract: After selection for 12 generations in the laboratory, Spodoptera exigua(Hübner)showed 5.47-fold resistance to tebufenozide. The resistance strain showed low cross-resistance to methoxyfenozide, but it showed no cross-resistance to cyhalothrin, deltamethrin, beta-cypermethrin, phoxim, chlorpyrifos, methomyl, emamectin, fipronil and chlorfluazuron,with resistance ratios ranged from 0.83- to 1.63-fold.