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Mixture effects of thiamethoxam and seven pesticides with different modes of action on honey bees (Aplis mellifera)

文献类型： 外文期刊

作者： Li, Wenhong 1 ; Lv, Lu 1 ; Wang, Yanhua 1 ; Zhu, Yu-Cheng 3 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Detect Pesticide Residues & Control Zhejia, Hangzhou 310021, Zhejiang, Peoples R China

2.Guizhou Acad Agr Sci, Guizhou Inst Plant Protect, Guiyang 550006, Guizhou, Peoples R China

3.USDA ARS, 141 Expt Stn Rd, Stoneville, MS 38776 USA

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.6； 五年影响因子：4.9 ）

ISSN： 2045-2322

年卷期： 2023 年 13 卷 1 期

页码：

收录情况： SCI

摘要： Even though honey bees in the field are routinely exposed to a complex mixture of many different agrochemicals, few studies have surveyed toxic effects of pesticide mixtures on bees. To elucidate the interactive actions of pesticides on crop pollinators, we determined the individual and joint toxicities of thiamethoxam (THI) and other seven pesticides [dimethoate (DIM), methomyl (MET), zeta-cypermethrin (ZCY), cyfluthrin (CYF), permethrin (PER), esfenvalerate (ESF) and tetraconazole (TET)] to honey bees (Aplis mellifera) with feeding toxicity test. Results from the 7-days toxicity test implied that THI elicited the highest toxicity with a LC50 data of 0.25 (0.20-0.29) & mu;g mL(-1), followed by MET and DIM with LC50 data of 4.19 (3.58-4.88) and 5.30 (4.65-6.03) & mu;g mL(-1), respectively. By comparison, pyrethroids and TET possessed relatively low toxicities with their LC50 data from the range of 33.78 (29.12-38.39) to 1125 (922.4-1,442) & mu;g mL(-1). Among 98 evaluated THI-containing binary to octonary mixtures, 29.59% of combinations exhibited synergistic effects. In contrast, 18.37% of combinations exhibited antagonistic effects on A. mellifera. Moreover, 54.8% pesticide combinations incorporating THI and TET displayed synergistic toxicities to the insects. Our findings emphasized that the coexistence of several pesticides might induce enhanced toxicity to honey bees. Overall, our results afforded worthful toxicological information on the combined actions of neonicotinoids and current-use pesticides on honey bees, which could accelerate farther comprehend on the possible detriments of other pesticide mixtures in agro-environment.

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