Ahmad Mushtaq
Central Cotton Research Institute, Multan, Pakistan.
J Econ Entomol. 2007 Jun;100(3):886-93. doi: 10.1603/0022-0493(2007)100[886:aopwoi]2.0.co;2.
The binary mixtures of pyrethroids cypermethrin, alpha-cypermethrin, zeta-cypermethrin, bifenthrin, fenpropathrin, lambda-cyhalothrin, and deltamethrin plus organophosphates ethion, profenofos, chlorpyrifos, quinalphos, acephate, methamidophos, methyl parathion, and triazophos were evaluated on putatively resistant field populations of Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) from Pakistan using a leaf-dip bioassay. Ethion exhibited good potentiation with all the pyrethroids. Quinalphos potentiated cypermethrin, fenpropathrin, and lambda-cyhalothrin but not bifenthrin. Acephate was potentiating with bifenthrin and fenpropathrin but antagonistic with zeta-cypermethrin. A potentiation effect was also found when methamidophos was mixed with bifenthrin and fenpropathrin. However, profenofos was antagonistic with cypermethrin, bifenthrin, and lambda-cyhalothrin. Similarly, bifenthrin + methyl parathion and deltamethrin + triazophos mixtures were antagonistic when tested on several populations of B. tabaci. Chlorpyrifos was antagonistic with cypermethrin but had an additive effect with fenpropathrin.
采用浸叶生物测定法，对来自巴基斯坦的烟粉虱（烟粉虱属，半翅目：粉虱科）疑似抗性田间种群，评估了拟除虫菊酯类的氯氰菊酯、α-氯氰菊酯、ζ-氯氰菊酯、联苯菊酯、甲氰菊酯、高效氯氟氰菊酯和溴氰菊酯与有机磷类的乙硫磷、丙溴磷、毒死蜱、喹硫磷、乙酰甲胺磷、甲胺磷、甲基对硫磷和三唑磷的二元混合物。乙硫磷与所有拟除虫菊酯类均表现出良好的增效作用。喹硫磷对氯氰菊酯、甲氰菊酯和高效氯氟氰菊酯有增效作用，但对联苯菊酯无增效作用。乙酰甲胺磷与联苯菊酯和甲氰菊酯有增效作用，但与ζ-氯氰菊酯有拮抗作用。甲胺磷与联苯菊酯和甲氰菊酯混合时也发现有增效作用。然而，丙溴磷与氯氰菊酯、联苯菊酯和高效氯氟氰菊酯有拮抗作用。同样，联苯菊酯 + 甲基对硫磷和溴氰菊酯 + 三唑磷混合物在对多个烟粉虱种群进行测试时表现出拮抗作用。毒死蜱与氯氰菊酯有拮抗作用，但与甲氰菊酯有相加作用。
