Acta Entomologica Sinica (2001) 44, 469-475

Kai-Yun Wang, Xing-Yin Jiang, Mei-Qin Yi and Bao-Qian Lu (2001)
Effects of feeding on different host plants on resistance to insecticides in the progeny of the cotton aphid
Acta Entomologica Sinica 44 (4), 469-475
Abstract: The susceptible strain and the resistant strains R-fenvalerate and R-imidacloprid of the cotton aphid (Aphis gossypii) were reared with three different host plants: cotton, cucumber and pomegranate. The toxicity of five insecticides to the decendants of the cotton aphid and the relevant enzymic activity were measured. The results showed that the resistance of the progeny of R-fenvalerate strain feeding on cotton was 67.4-folds higher than that feeding on cucumber for fenvalerate, and 0.5 ~ 4.6 folds for other four insecticides. When feeding on pomegranate this strain showed moderate resistance. The R-imidacloprid strain feeding on the three host plants showed the same tendency in resistance to the five insecticides as the R-fenvalerate strain. The sensitivity of the susceptible strain feeding on cucumber to the tested insecticides was higher than that feeding on cotton. AChE and CarE activities of different strains feeding on cotton were higher than feeding on cucumber (AChE: 2.4 ~ 2.8 times; CarE : 1. 8 ~ 2.4 times). The results demonstrated that feeding on different host plants might cause the change in sensitivity to insecticides in the resistant and susceptible strains of the cotton aphid. One of the major factor causing the resistance changes was the alteration in AChE and CarE activities.
(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.
	Aphis gossypii	Cotton (Gossypium)
	Aphis gossypii	Pomegranate (Punica granatum)
	Aphis gossypii	Cucumber (Cucumis sativus)