Risk Assessment of Fipronil on Honeybee (Apis mellifera)

Fipronil의 꿀벌 (Apis mellifera)에 대한 위해성 평가

  • Kim, Byung-Seok (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • Yang, Yu-Jung (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • Park, Yeon-Ki (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • Jeong, Mi-Hye (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • You, Are-Sun (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • Park, Kyung-Hun (Department of Crop Life Safety, National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA)) ;
  • Ahn, Young-Joon (School of Agricultural Biotechnology, Seoul National University)
  • 김병석 (국립농업과학원 농산물안전성부) ;
  • 양유정 (국립농업과학원 농산물안전성부) ;
  • 박연기 (국립농업과학원 농산물안전성부) ;
  • 정미혜 (국립농업과학원 농산물안전성부) ;
  • 유아선 (국립농업과학원 농산물안전성부) ;
  • 박경훈 (국립농업과학원 농산물안전성부) ;
  • 안용준 (서울대학교 농생명공학부)
  • Published : 2009.03.31

Abstract

This study was conducted to evaluate the actual risk of fipronil on worker honey bees (Apis mellifera L.) through acute contact toxicity test, acute oral toxicity test, toxicity of residues on foliage test, and small scale field test. The $48h-LD_{50s}$ of fipronil SC on honeybee were $0.005{\mu}g$ a.i./bee in acute contact toxicity test and $0.004{\mu}g$ a.i./bee in acute oral toxicity test, respectively. In toxicity of residues on foliage test, fipronil showed over 90% of mortality during 28days after treatment at recommended application rate. The $DT_{50}$ of dislodgeable foliar residue was 9 days. Finally, In small scale field test, fipronil showed similar toxicity in the residues on foliage test. It was concluded that fipronil has very high acute toxicity and long residual toxicity to honeybee. Therefore, fipronil is highly toxic to bees exposed to direct treatment or residues on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds if bees are visiting the treatment area. To protect honeybee and wild pollinators from outdoor use of fipronil, ultimately it should need to limit for only indoor use to prevent pollinators from unintentionally exposure of fipronil.

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