Toxicological and Electrophysiological Activities of Pyrethroids between Larvae of Diamondback Moth, plutella xylostella and Beet Armyworm, Spodoptera exigua

배추좀나방과 파밤나방의 pyrethroids약제에 대한 감수성 및 전기적 신경 반응 비교

  • Ham, Sun-Hee (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Ahn, Hee-Geun (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Yang, Jeong-Oh (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Yoon, Chang-Mann (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Kim, Gil-Hah (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University)
  • 함선희 (충북대학교, 농업생명환경대학, 식물의학과) ;
  • 안희근 (충북대학교, 농업생명환경대학, 식물의학과) ;
  • 양정오 (충북대학교, 농업생명환경대학, 식물의학과) ;
  • 윤창만 (충북대학교, 농업생명환경대학, 식물의학과) ;
  • 김길하 (충북대학교, 농업생명환경대학, 식물의학과)
  • Published : 2009.09.30

Abstract

Based on the insecticidal efficacy by insecticide treatment methods, neurophysiological responses were compared with the larvae of diamondback moth (DBM) and beet armyworm (BAW) using pyrethroids working on nervous system. By body spray method, all pyrethroids were showed lower insecticidal activity below 50% on the larvae of DBM and BAW. By leaf dipping method, DBM larvae were showed the insecticidal activity as 100% at 50 ppm deltamethrin, 80.0% at fenvalervate and 63.3% at permethrin. However, BAW larvae were showed lower insecticidal activity as similar as control in all concentration. In order to examine electrophysiological response on nervous system on DBM and BAW larvae when treated three insecticides, we investigated the voltage and reaction degree. The voltage of DBM were responded as high as $10^{-7}M$ in deltamethrin, $10^{-5}M$ in fenvalerate and $10^{-3}M$ in permethrin. However, those of BAW were showed dull responses with small variation of voltage to all three insecticides.

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