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Sublethal and hormesis effects of beta-cypermethrin on the biology, life table parameters and reproductive potential of soybean aphid Aphis glycines

文献类型： 外文期刊

作者： Qu, Yanyan 1 ; Xiao, Da 1 ; Liu, Junjie 1 ; Chen, Zhou 1 ; Song, Lifang 1 ; Desneux, Nicolas 2 ; Benelli, Giovanni 4 ; Ga 1 ;

作者机构： 1.China Agr Univ, Dept Entomol, Beijing 100193, Peoples R China

2.Univ Cote Azur, INRA, French Natl Inst Agr Res, CNRS,UMR 1355 7254,Inst Sophia Agrobiotech, F-06903 Sophia Antipolis, France

3.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing, Peoples R China

4.Univ Pisa, Dept Agr Food & Environm, Via Borghetto 80, I-56124 Pisa, Italy

关键词： Sublethal concentration;Biological traits;Demographic parameter;Integrated Pest Management;Pest resurgence

期刊名称：ECOTOXICOLOGY （ 影响因子：2.823； 五年影响因子：2.958 ）

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收录情况： SCI

摘要： Beta-cypermethrin has long been recommended as an effective pesticide to control the soybean aphid, Aphis glycines Matsumura, a serious pest in soybean crops. Besides acute toxicity, it leads to changes in life history traits of A. glycines, notably its reproductive potential. This study has assessed the effects of five sublethal concentrations (0.625, 1.25, 2.5, 5 and 10 A mu g/L) of beta-cypermethrin on different life history traits of A. glycines. Exposure to these concentrations caused shorter oviposition period and reduced adult longevity. The strongest stimulatory effect on aphid reproduction was achieved when exposed to a higher sublethal beta-cypermethrin concentration (5 A mu g/L). Net reproduction rate (R (0) ), intrinsic rate of increase (r (m) ) and finite rate of increase (lambda) were significantly higher than that of the control, increasing by 20.58, 4.89 and 2.06%, respectively. We found no significant difference in mean generation time (T) between the treatment of 5 A mu g/L beta-cypermethrin and the control. However, when the concentration increased to 10 A mu g/L, the reproduction behavior was restrained and the mean generation time (T) was shortened, resulting in significant decrease in R (0) and T by 16.58 and 3.83%, respectively. In conclusion, a sublethal concentration (5 A mu g/L) of beta-cypermethrin triggered the strongest hormesis on A.glycines, thus providing valuable knowledge on the sublethal effects of this insecticide on soybean aphids. Hormesis may be one of the mechanisms underlying pest resurgences, and better knowledge would enable a more effective use of insecticides in Integrated Pest Management programs.

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