Acute contact toxicity of three insecticides on Asian honeybees <i>Apis cerana</i>

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  • YASUDA Mika
    Department of Forest Entomology, Forestry and Forest Products Research Institute
  • MAEDA Taro
    National Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO)
  • TAKI Hisatomo
    Department of Forest Entomology, Forestry and Forest Products Research Institute

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Other Title
  • トウヨウミツバチ<i>Apis cerana</i> における 3 薬剤による急性経皮毒性試験
  • Acute contact toxicity of three insecticides on Asian honeybees Apis cerana

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Abstract

The Asian honeybee, Apis cerana, is one of the major native honeybee species in Asia. The effects of insecticides on honeybees are currently a major concern worldwide, making it important to evaluate the impact of new insecticides on non-targeted beneficial species. This study determined the acute contact toxicity of ethiprole, acephate, and flubendiamide in Japanese A. cerana (A. c. japonica). Based on 48-h contact tests, the LD50 of ethiprole and acephate on A. cerana was 0.0036 and 0.11μg/bee, respectively, while the LD50 of flubendiamide could not be determined from the concentrations tested (i.e. up to 100.0μg/bee). These results provide evidence regarding the susceptibility of A. cerana under laboratory conditions to insecticides commonly used.

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