Effect of temperature on the toxicity of several insecticides to <i>Apolygus lucorum</i> (Heteroptera: Miridae)

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  • Ma Yun-hua
    Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Centre of Hebei Province College of Plant Protection, Hebei Agricultural University
  • Gao Zhan-lin
    Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Centre of Hebei Province
  • Dang Zhi-hong
    Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Centre of Hebei Province
  • Li Yao-fa
    Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Centre of Hebei Province
  • Pan Wen-liang
    Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Centre of Hebei Province

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  • 数種の農薬がコアオカスミカメに対して示す殺虫活性への温度の影響
  • Effect of temperature on the toxicity of several insecticides to Apolygus lucorum (Heteroptera: Miridae)

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The toxicity of eight conventional insecticides to the third-instar Apolygus lucorum was measured at 15°C, 20°C, 25°C, 30°C, and 35°C, and the temperature was strictly maintained from pretreatment to posttreatment. The results showed that temperature prompted a slightly positive influence in toxicity of phoxim and carbosulfan, whereas methomyl was negatively influenced by temperature. β-cypermethrin and λ-cyhalothrin demonstrated a distinctively stable negative temperature coefficient, especially β-cypermethrin with a 70.27 time variance between given temperatures. In contrast, the toxicity of imidacloprid and acetamiprid increased as the temperature rose, showing a significant positive temperature coefficient to Apolygus lucorum. The effect of temperature on the toxicity of fipronil was irregular. Therefore, temperature should be taken into account in the process of choosing insecticides.

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