Acta Entomologica Sinica (2001) 44, 304-310

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Guo-Lei Feng, Zhang-Wu Zhao, Mei Li, Feng-Qin He, Ying Jin, Zong-Qing Li and Shan-Xue Du (2001)
Relationship between esterase activities of the cotton aphid (Aphis gossypii) and overwintering host plants
Acta Entomologica Sinica 44 (3), 304-310
Abstract: Measurement of esterase activities of the cotton aphid, Aphis gossypii, on different overwintering host plants showed that the alpha-naphthylacetate (alpha-NA) esterase activity of aphids on cotton seedling of Gaomi, Shandong Province was the highest, 2.4 times of that in cotton aphid on Chinese prickly ash. The alpha-NA esterase activity of aphids on pomegranate and rose of sharon was intermediate, 1.3 ~ 1.5 times of that on Chinese prickly ash. Aphids on these two host plants, showed no obvious difference in the esterase activity. Assay of alpha-NA esterase activity frequency (EF) distribution, showed that the ranges of alpha-NA EF distribution of cotton aphids on Chinese prickly ash and cascara were narrower than those on pomegranate and cotton seedling. The frequencies of aphids on cascara and Chinese prickly ash with OD values less than 0.1/0.033 aphid were 70 % and 62 % respectively. The alpha- NA esterase activities (EF50 = 0.154, 0.136, 0.1138) in aphids on the latter 3 host plants were higher than those (EF50 = 0.08, 0.085) on the former 2 host plants. Moreover, the ranges of (ß-naphthylacetate (ß-NA) EF distribution in the aphids on pomegranate and the cotton aphids in Gaomi were wider than those on other host plants. The frequencies of aphids on cascara, Chinese prickly ash and cotton seedling with OD value less than 0.10/0.033 aphid were 52% ~ 62%. The difference in EF between cotton aphids on pomegranate and cotton from Gaomi and the aphids on other 4 host plants was obvious.
(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

Pest and/or beneficial records:

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

Aphis gossypii Cotton (Gossypium) China (NE)
Aphis gossypii Pomegranate (Punica granatum)