Fitness Trade-Off Associated With Spinosad Resistance in Frankliniella occidentalis (Thysanoptera: Thripidae)
文献类型: 外文期刊
第一作者: Li, Xiaoyu
作者: Li, Xiaoyu;Wan, Yanran;Yuan, Guangdi;Hussain, Sabir;Xu, Baoyun;Xie, Wen;Wang, Shaoli;Zhang, Youjun;Wu, Qingjun;Wan, Yanran
作者机构:
关键词: Frankliniella occidentalis;spinosad resistance;fitness cost;feeding behavior;electrical penetration graph
期刊名称:JOURNAL OF ECONOMIC ENTOMOLOGY ( 影响因子:2.381; 五年影响因子:2.568 )
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年卷期:
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收录情况: SCI
摘要: Frankliniella occidentalis (Pergande) is an economically important pest of agricultural crops. High resistance has been detected in field populations of F. occidentalis against the insecticide spinosad. In this study, we compared life history traits, body sizes, and feeding behaviors (recorded via an electrical penetration graph) of spinosad-susceptible (Ivf03) and spinosad-resistant (NIL-R) near-isogenic lines of F. occidentalis. Life table analysis showed that NIL-R had reduced female longevity and reduced fecundity. The relative fitness of NIL-R (0.43) was less than half that of Ivf03. NIL-R individuals were smaller than Ivf03 individuals, both in body length and body width at every stage. The number and duration of feeding activities were significantly reduced in NIL-R, with the exception of total duration of long-ingestion probes. These results suggest that there is a fitness trade-off associated with spinosad resistance in F. occidentalis, and that the development of resistance in this pest species may be reduced by rotating spinosad with other pesticides lacking cross-resistance.
分类号: Q969.9
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