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The Effect of Different Thiamethoxam Concentrations on Riptortus pedestris Development and Fecundity

文献类型： 外文期刊

作者： Wang, Zijie 1 ; Wang, Song 1 ; Li, Lixia 1 ; Chen, Lei 1 ; Gao, Yu 1 ; Yuan, Ming 4 ; Wang, Yueying 5 ; Shi, Shusen 1 ;

作者机构： 1.Jilin Agr Univ, Coll Plant Protect, Changchun 130118, Peoples R China

2.Heilongjiang Acad Agr Sci, Jiamusi Branch, Jiamusi 154007, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Soybean Dis & Pest Control, Changchun 130118, Peoples R China

4.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161006, Peoples R China

5.Suzhou Acad Agr Sci, Suzhou 234099, Peoples R China

关键词： life table; Riptortus pedestris; thiamethoxam; population parameters; soybean

期刊名称：TOXICS （ 影响因子：3.9； 五年影响因子：4.2 ）

ISSN：

年卷期： 2024 年 12 卷 7 期

页码：

收录情况： SCI

摘要： The stink bug, Riptortus pedestris (Fabricius) (Hemiptera: Alydidae), is a highly destructive pest that significantly damages legume crops in East and South Asia. Neonicotinoid insecticides containing thiamethoxam are widely used to control R. pedestris in soybean fields. However, the current knowledge on the impact of different thiamethoxam concentrations on R. pedestris growth and reproduction is lacking and insufficient. The present study investigated the effects of thiamethoxam on the biological traits of R. pedestris after treatment with LC10 (19.8 mg/L), LC20 (31.6 mg/L), LC30 (44.2 mg/L), LC40 (58.9 mg/L), and LC50 (77.0 mg/L) concentrations. These five thiamethoxam concentrations (LC10 similar to LC50) reduced adult longevity and fecundity in the F-1 generation females. Thiamethoxam treatment also significantly decreased the population trend index, intrinsic rate of increase, net reproductive rate, gross reproductive rate, and finite rate of increase and increased the mean generation time. These results show that thiamethoxam hinders and suppresses the development and growth of the F-1 population of R. pedestris. Thiamethoxam is recommended for spray control during peak adult emergence, as it not only has a controlling effect on the parental generation but also a negative impact on the F-1 generations.

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