期刊
JOURNAL OF APPLIED ENTOMOLOGY
卷 128, 期 9-10, 页码 583-587出版社
WILEY
DOI: 10.1111/j.1439-0418.2004.00897.x
关键词
Helicoverpa armigera; cross-resistance; India; synthetic pyrethroids
类别
In Helicoverpa armigera, withdrawal of selection pressure resulted in a two- to fourfold increase in susceptibility to synthetic pyrethroids and continuous selection enhanced the resistance level by four- to fivefold to the respective pyrethroids at the end of the 14th generation. Populations selected for resistance to one pyrethroid showed positive cross-resistance to all other pyrethroids, but no cross-resistance to endosulfan and thiodicarb. There was a significant increase in mixed-function oxidase activity with advancing generation suggesting its possible role in the positive cross-resistance among the pyrethroids. The induction of carboxyl esterases in pyrethroid-selected populations may have resulted in the activation of indoxacarb, thereby accounting for the observed negative cross-resistance.
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