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Variation in the toxicity of a novel meta-diamide insecticide, broflanilide, among thrips pest species and developmental stages

文献类型： 外文期刊

作者： Chen, Jin-Cui 1 ; Cao, Li-Jun 1 ; Sun, Li-Na 1 ; Gao, Yong-Fu 1 ; Cao, Hua-Qian 1 ; Ma, Zhong-Zheng 1 ; Ma, Li-Jun 1 ; Shen, Xiu-Jing 1 ; Wang, Jia-Xu 1 ; Gong, Ya-Jun 1 ; Hoffmann, Anthony Ary 2 ; Wei, Shu-Jun 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, 9 Shuguanghuayuan Middle Rd, Beijing 100097, Peoples R China

2.Univ Melbourne, Sch BioSci, Bio21 Inst, Parkville, Vic, Australia

关键词： acetamiprid; broflanilide; chlorfenapyr; emamectin benzoate; insecticide resistance; sulfoxaflor

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.462； 五年影响因子：4.688 ）

ISSN： 1526-498X

年卷期： 2022 年 78 卷 12 期

页码：

收录情况： SCI

摘要： Background Thrips pests cause increasing damage to crops around the world. Widespread usage of some insecticides against thrips has now led to the evolution of resistance to several active ingredients, and new insecticides are required. This study examined the toxicity of the novel insecticide broflanilide to multiple populations of several thrips pests. Results Bioassays showed that thrips populations had LC50 values ranging from 0.5 to almost 300 mg center dot L-1. A population of Frankliniella occidentalis had the highest LC50 value at 290.63 mg center dot L-1, while a population of Echinothrips americanus had the lowest LC50 value at 0.51 mg L-1. LC50 values among seven populations of Thrips palmi ranged from 2.5689 to 23.6754 mg center dot L-1, indicating intraspecific variation in toxicity. In this species, the toxicity of broflanilide was relatively higher in adults than in larvae. More than 90% of eggs of T. palmi could not develop into larvae when treated with 5-50 mg L-1 broflanilide. Compared to five commonly used insecticides, broflanilide showed relatively high toxicity to T. palmi. Field control tests with T. palmi showed that control efficacy (from 90.44% to 93.14%) was maintained from day three to day 14 after treatment with 22.5 and 45 ga.i hm(-1) broflanilide. Conclusion Broflanilide is potentially a useful insecticide for controlling Thrips hawaiiensis, Frankliniella intonsa, Megalurothrips usitatus. E. americanus, and some populations of T. palmi. However, the variation in toxicity of this insecticide to different species, populations, and developmental stages indicates that target species and life stages may need to be carefully considered. (c) 2022 Society of Chemical Industry.

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