Comparative examination on synergistic toxicities of chlorpyrifos, acephate, or tetraconazole mixed with pyrethroid insecticides to honey bees (Apis mellifera L.)
文献类型： 外文期刊
作者： Wang, Yanhua 1 ; Zhu, Yu Cheng 2 ; Li, Wenhong 3 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Minist Agr, Key Lab Pesticide Residue Detect,State Key Lab Ma, Hangzhou 310021, Zhejiang, Peoples R China
2.USDA ARS, Southern Insect Management Res Unit, JWDSRC, 141 Expt Stn Rd,POB 346, Stoneville, MS 38776 USA
3.Guizhou Acad Agr Sci, Guizhou Inst Plant Protect, Guiyang 550006, Guizhou, Peoples R China
关键词： Mixture; Pesticide interactions; Synergy; Pollinators; Ecotoxicology
期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）
ISSN： 0944-1344
年卷期： 2020 年 27 卷 7 期
页码：
收录情况： SCI
摘要： Potential synergistic toxicity of pesticide mixtures has increasingly become a concern to the health of crop pollinators. The toxicities of individual and mixture of chlorpyrifos (CHL), acephate (ACE), or tetraconazole (TET) with nine pyrethroid insecticides to honey bees (Apis mellifera L.) were evaluated to reveal any aggregated interaction between pesticides. Results from feeding toxicity tests of individual pesticides indicated that organophosphate insecticides CHL and ACE had higher toxicities to honey bees compared to nine pyrethroids. Moreover, different pyrethroids exhibited considerable variation in toxicity with LC50 values ranging from 10.05 (8.60-11.69) to 1125 (922.4-1442) mg a.i. L-1 after exposure for 7 days. Among the 12 examined pesticides, a relatively low toxicity to A. mellifera was detected from the fungicide TET. All the binary mixtures of ACE or TET in combination with pyrethroids exhibited synergistic effects. However, TET in combination with pyrethroids showed greater synergistic toxicity to A. mellifera than ACE in combination with pyrethroids. Approximately 50% binary mixtures of CHL in combination with pyrethroids also showed synergistic responses in honey bees. In particular, CHL, ACE, or TET in combination with either lambda-cyhalothrin (LCY) or bifenthrin (BIF) showed the strongest synergy in A. mellifera, followed by CHL, ACE, or TET in combination with either zeta-cypermethrin (ZCY) or cypermethrin (CYP). The findings indicated that the co-exposure of various pesticides in natural settings might lead to severe injury to crop pollinators. Therefore, pesticide mixtures should be applied carefully in order to minimize negative effects on honey bees while maintaining effective management against crop pests.
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