Resistance selection of indoxacarb in Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae): cross-resistance, biochemical mechanisms and associated fitness costs
文献类型： 外文期刊
第一作者： Wang, Qinqin
作者： Wang, Qinqin;Qi, Haoliang;Wang, Qiyuan;Yuan, Huizhu;Rui, Changhui
作者机构：
关键词： indoxacarb; Helicoverpa armigera; cross-resistance; fitness costs; resistance mechanism
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）
ISSN： 1526-498X
年卷期： 2018 年 74 卷 11 期
页码：
收录情况： SCI
摘要： BACKGROUND: The cotton bollworm Helicoverpa armigera is a worldwide insect pest with the ability to develop resistance to many insecticides. Indoxacarb, a sodium channel blocker, is an important insecticide that is used to control H. armigera. Cross-resistance, metabolic mechanisms and life history traits were established for an indoxacarb-selected (IND-SEL) population of H. armigera. RESULTS: After 11 generations of selection, the susceptibility to indoxacarb was decreased by 4.43-fold and the estimated realized heritability (h(2)) was only 0.072. Interestingly, the IND-SEL population was more susceptible to methoxyfenozide and abamectin than the susceptible population. The activities of cytochrome P450 monooxygenase (P450) and carboxyl esterase (CarE) were significantly increased in IND-SEL H. armigera. Thus, susceptibility to indoxacarb was increased by piperonyl butoxide and S,S,S-tributyl phosphorothioate, showing synergistic ratios of 2.54- and 1.82-fold, respectively. Moreover, the IND-SEL population had a reduced relative fitness (0.67), with a lower growth rate and fecundity than the susceptible population. CONCLUSIONS: Evidence from this study suggests that decreased susceptibility to indoxacarb may be associated with fitness costs in H. armigera and enhanced activities of P450 and CarE may be important detoxification mechanisms in the development of indoxacarb resistance. Methoxyfenozide and abamectin can be rotationally used to manage indoxacarb resistance. (C) 2018 Society of Chemical Industry
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