Organophosphorus insecticides synergize pyrethroids in the resistant strain of cotton bollworm, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) from West Africa
Organophosphorus insecticides synergize pyrethroids in the resistant strain of cotton bollworm, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) from West Africa
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DOI：
10.1603/0022-0493-96.2.468
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发表时间：
2003-04-01
影响因子：
2.2
通讯作者：
Fournier, D
中科院分区：
文献类型：
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作者：
Martin, T;Ochou, OG;Fournier, D
来自西非的棉铃虫（Hubner）种群最近通过混合功能氧化酶增强代谢而对拟除虫菊酯杀虫剂产生抗性。采用组合指数法研究了有机磷杀虫剂对拟除虫菊酯的增效作用。测试了目前登记用于控制西非棉花害虫复合体的几种杀虫剂混合物，包括：氯氰菊酯/乙硫磷、氯氰菊酯/丙溴磷、溴氰菊酯/硫唑磷、溴氰菊酯/毒死蜱、氟氯氰菊酯/毒死蜱和倍氯氟氰菊酯/毒死蜱。在抗性品系中，有机磷杀虫剂通过加和或增效作用显著提高拟除虫菊酯的毒力，抑制抗性效应。氯氰菊酯/乙硫磷、溴氰菊酯/三唑磷和溴氰菊酯/毒死蜱混配具有显著的增效作用。这些杀虫剂混合物的增效作用的使用应被证明是一个额外的工具，在整体的抗性管理战略，因为拟除虫菊酯抗性在H。来自西非的棉铃虫尚未稳定，在棉花季节之间减少，并随着治疗而增加。在没有选择的情况下，H.应恢复对棉铃虫的杀虫剂使用。
Helicoverpa armigera (Hubner) populations from West Africa recently developed resistance to pyrethroid insecticides through enhanced metabolism by mixed-function oxidases. The combination index method was used to study the synergism of pyrethroids by organophosphorus insecticides. Several mixtures of insecticides currently registered to control cotton pest complex in West Africa were tested, including: cypermethrin/ethion, cypermethrin/profenofos, deltamethrin/tiriazophos, deltamethrin/chlorpyriphos, cyfluthrin/chlorpyriphos, and betacyfluthrin/chlorpyriphos. In the resistant strain, the organophosphorus insecticides significantly increased the toxicity of pyrethroids suppressing the resistance effect, either by additive or synergistic effects. Significant synergism was shown for the following mixtures: cypermethrin/ethion, deltarnethrin/triazophos, and deltamethrin/chlorpyriphos. The use of synergism from these insecticide mixtures should prove to be an additional tool in the overall resistance management strategy because the pyrethroid resistance in H. armigera from West Africa is not yet stable, decreasing between cotton seasons and increasing with treatments. In absence of selection, the susceptibility of H. armigera to insecticides should be restored.