文献类型: 外文期刊
第一作者: Lu, Yanhui
作者: Lu, Yanhui;Wu, Kongming;Liu, Yangqing;Xue, Fangsen;Wyckhuys, Kris A. G.
作者机构:
关键词: Apolygus lucorum;endosulfan;toxicity;sublethal effects;CODLING MOTH LEPIDOPTERA;HETEROPTERA MIRIDAE;SEASONAL ABUNDANCE;LYGUS-LUCORUM;BT COTTON;TEBUFENOZIDE;TORTRICIDAE;INSECTICIDES;PESTICIDES;METHOXYFENOZIDE
期刊名称:JOURNAL OF ECONOMIC ENTOMOLOGY ( 影响因子:2.381; 五年影响因子:2.568 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Various pesticides directly impact insect pest populations through acute toxicity (lethal) effects, but they also cause a range of indirect (sublethal) effects oil pest physiology or behavior. In this study, we describe both lethal and sublethal effects of endosulfan oil the survival, development, and fecundity of Apolygus lucorum Meyer-Dur (Hemiptera: Miridae), an important pest of Bacillus thuringiensis (Bt) cotton, Gossypium hirsutum L., in China. We quantify pesticide effects oil adult mirids as well as on subsequent (F1, F2) generations. Toxicity bioassays determined the median lethal concentration (LC50) for adult A. lucorum as 0.58 ppm. To evaluate the sublethal effect of endosulfan, we used LC20 and LC40 concentrations at 0.30 ppm and 0.48 ppm, respectively. Sublethal concentrations of endosulfan significantly reduced longevity and fecundity of female adults, but slightly affected male longevity. We also found sublethal effects oil the F1 generation, through a reduction of egg hatching rate, nymphal mortality, adult molting rate, and adult fecundity, and oil the F2 generation, through a decrease of egg hatching rate. These results show that endosulfan has far greater effects on A. lucorum than estimated by acute toxicity tests, and the effects of this pesticide oil surviving mirids can be comparatively long-lived. This pesticide likely causes severe disruptions of A. lucorum population dynamics, with single endosulfan application, invoking a great reduction of population growth of resident mirid populations. We discuss implications of this work for control programs for A. lucorum oil Bt cotton.
分类号: Q969.9
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