Insecticidal Activity and Behavioral Disorders by Pyrifluquinazon to Trialeurodes vaporariorum and Bemisia tabaci

온실가루이와 담배가루이에 대한 pyrifluquinazon의 살충 및 행동장애

  • Lee, Seon-Woo (Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University) ;
  • Song, Myung-Kyu (Environment-Friendly Agriculture Research Division, Chungbuk Provincial ARES) ;
  • Ahn, Ki-Su (Environment-Friendly Agriculture Research Division, Chungbuk Provincial ARES) ;
  • Kim, Young-Jae (Chungnam Institute of Forest Environment Research) ;
  • Moon, Yil-Sung (Division of Forest Insect Pests & Diseases, Korea Forest Research Institute) ;
  • Koo, Hyun-Na (Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University) ;
  • Kim, Gil-Hah (Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University)
  • 이선우 (충북대학교 농업생명환경대학 식물의학과) ;
  • 송명규 (충북농업기술원 친환경연구과) ;
  • 안기수 (충북농업기술원 친환경연구과) ;
  • 김영재 (충남산림환경연구소) ;
  • 문일성 (국립산림과학원 산림병해충연구과) ;
  • 구현나 (충북대학교 농업생명환경대학 식물의학과) ;
  • 김길하 (충북대학교 농업생명환경대학 식물의학과)
  • Received : 2013.02.20
  • Accepted : 2013.03.16
  • Published : 2013.03.31


Pyrifluquinazon is known to act as a feeding inhibitor in several insect species. In this study, we investigated the effect of pyrifluquinazon on the whiteflies, Trialeurodes vaporariorum and Bemisia tabaci. Pyrifluquinazon showed high insecticidal activity (> 90%) against adult T. vaporariorum and B. tabaci at 12.5 ppm to 50 ppm. However, there was no effect on eggs and nymphs of both species. Pyrifluquinazon showed low insecticidal activity in root and foliar uptake. Control efficacy of pyrifluquinazon was above 90% at 5 days after treatment. In order to investigate the behavioral response of the whiteflies initiated by application of pyrifluquinazon, we tested the contact toxicity and ingestion toxicity. After 1 h of contact, whitefly drop, wing convulsion, and paralysis were observed. Similar phenomenon of whitefly population was observed in test of ingestion toxicity after 3 h. In the choice test, pyrifluquinazon showed repellent activity against both species. These results suggest that pyrifluquinazon cause behavioral disorder rather than direct inhibition of feeding.


Supported by : 농촌진흥청


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