Baseline susceptibility, risk assessment, biochemical mechanism and fitness cost of broflanilide resistance in Tuta absoluta from China
文献类型： 外文期刊
作者： Qu, Cheng 1 ; Lin, Ao-li 1 ; Wang, Ze-hua 1 ; Feng, Yao-fang 1 ; Luo, Chen 1 ; Fang, Yong 4 ; Guedes, Raul Narciso C. 5 ; Wang, Ran 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing 100097, Peoples R China
2.Beijing Key Lab Environm Friendly Management Fruit, Beijing 100097, Peoples R China
3.Hebei Univ, Inst Life Sci & Green Dev, Sch Life Sci, Baoding 071002, Peoples R China
4.Yuelushan Lab, Changsha 410128, Peoples R China
5.Univ Fed Vicosa, Dept Entomol, BR-36570900 Vicosa, MG, Brazil
关键词： tomato pinworm; toxicity; field-evolved resistance; resistance risk; detoxifying enzymes
期刊名称：ENTOMOLOGIA GENERALIS （ 影响因子：4.6； 五年影响因子：4.4 ）
ISSN： 0171-8177
年卷期： 2025 年 45 卷 2 期
页码：
收录情况： SCI
摘要： The tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is a globally invasive and highly destructive pest that primarily targets solanaceous plants. This species has developed resistance to most currently used insecticides. Broflanilide, a novel meta-diamide insecticide that binds to a unique site on the gamma-aminobutyric acid receptor, has been effectively used for managing Lepidopteran pest species. This study aimed to explore the development of resistance, fitness effects, and underlying biochemical mechanisms. A laboratory strain of T. absoluta was exposed to broflanilide for 17 generations, showing no apparent resistance development. The low realized heritability of 0.0804 indicated a minimal risk of resistance. Fifteen field-collected populations of T. absoluta were surveyed and exhibited high susceptibility to broflanilide, with resistance ratios ranging from 0.63 to 3.53. The activities of major detoxification enzymes (cytochrome P450 monooxygenase, carboxylesterase, and glutathione S-transferase) remained unchanged after broflanilide selection. Life table analysis revealed extended larval stages and reduced adult longevity, fecundity, and oviposition duration in the broflanilide-selected strain, but without significantly affecting overall fitness. These findings provide valuable insights for formulating practical guidelines for the effective use of broflanilide in managing insecticide resistance in T. absoluta.
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