Acta Entomologica Sinica (1997) 40, 247-253

Youjun Zhang, Wenji Zhang, Xilai Han and Xuefeng Li (1997)
[Biochemical and physiological mechanisms of insecticide resistance in Helicoverpa armigera (Hübner)]
Acta Entomologica Sinica 40 (3), 247-253
Abstract: Mechanisms of insecticide resistance were studied in a field-selected resistant population (HJ-R) of Helicoverpa armigera. The fifth instar larvae of HJ-R strain possessed higher activity of esterase, glutathion S-transferase, monooxygenase than that of susceptible strain (HD-S). There was no significant difference between the two strains in sensitivity of acetylcholinesterase to insecticide. The central nervous system of HJ-R strain showed 2~3 time more insensitive to the action of fenvelerate. The metabolic detoxication was the main reason of resistance to organophosphorus and carbamate insecticides. The monooxygenase seems to be the most important mechanism of carbamate resistance in HJ-R population. The resistance to pyrethroids were caused by both target insensitivity and metabolic detoxication of monooxygenase and esterase.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera