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Insecticide resistance and its underlying synergism in field populations of Spodoptera frugiperda (J. E. Smith) from Hainan Island, China

文献类型： 外文期刊

作者： Liu, Junbin 1 ; Hao, Zheng 2 ; Yang, Shengyuan 2 ; Lin, Yuying 2 ; Zhong, Hao 2 ; Jin, Tao 2 ;

作者机构： 1.Guizhou Univ, Agr Coll, Guiyang 550025, Peoples R China

2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China

关键词： Spodoptera frugiperda; Indoxacarb; Chlorantraniliprole; Emamectin benzoate; Insecticide resistance; Synergism

期刊名称：PHYTOPARASITICA （ 影响因子：1.809； 五年影响因子：1.825 ）

ISSN： 0334-2123

年卷期：

页码：

收录情况： SCI

摘要： The fall armyworm, Spodoptera frugiperda (J.E. Smith), is one of the most destructive grain pests worldwide since it gradually invaded Africa, Asia, and Australia. Chemicals serve as a useful tool for its management when there are S. frugiperda outbreaks. In the present study, insecticide resistance status and synergistic effects of gradual doses of three synergists-indoxacarb, chlorantraniliprole, and emamectin benzoate-were investigated. Compared with that in the relative susceptible strain, one population of S. frugiperda developed low levels of resistance at resistance ratio (RR) = 5.1-fold, five populations expressed minor resistance at 3.1-fold < RR < 4.2-fold, and 12 populations remained susceptible at 1.1-fold < RR < 2.8-fold to indoxacarb. To chlorantraniliprole, one population demonstrated low resistance at RR = 7.9-fold, two populations showed minor resistance at 3.9-fold < RR < 4.0-fold, and 15 populations remained susceptible at 1.1-fold < RR < 2.8-fold. Moreover, 18 populations remained susceptible at 0.9-fold < RR < 2.7-fold to emamectin benzoate. The maximum synergistic effects of indoxacarb, chlorantraniliprole, and emamectin benzoate were found for piperonyl buoxide at a dose of 80 mu g/individual along with synergistic ratios at 4.9-, 5.7-, and 7.5-fold, respectively. The results provide a comprehensive survey of insecticide resistance status of the field population in Hainan as well as the synergism of piperonyl butoxide (PBO), diethyl maleate (DEM), and triphenyl phosphate (TPP). Continued monitoring of insecticide resistance is recommended for the application of appropriate management tactics.

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