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Pathogenicity of Entomopathogenic Nematode, Steinernema carpocapsae GSN1 Strain (Rhabditida: Steinernematidae) against Tebenna issikii (Lepidoptera: Choreutidae)

우엉뭉뚝날개나방(Tebenna issikii)에 대한 Steinernema carpocapsae GSN1 계통의 병원성

  • Kim, Hyeong-Hwan (Horticultural Environment Division, National Horticultural Research Institute) ;
  • Han, Gun-Yeong (Department of Applied Biology and Environmental Sciences, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Choo, Ho-Yul (Department of Applied Biology and Environmental Sciences, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Lee, Sang-Myeong (Southern Forest Research Center, National Forest Science Institute) ;
  • Lee, Dong-Woon (Department of Applied Biology, Institute of Agricultural Sciences, Sangju National University)
  • 김형환 (원예연구소 원예환경과) ;
  • 한건영 (경상대학교 응용생물환경학과, 농업생명과학연구원) ;
  • 추호렬 (경상대학교 응용생물환경학과, 농업생명과학연구원) ;
  • 이상명 (국립산림과학원 남부산림연구소) ;
  • 이동운 (상주대학교 생물응용학과 농업과학연구소)
  • Published : 2007.08.30

Abstract

Entomopathogenic nematode, Steinernema carpocapsae GSN1 strain was evaluated for the environmentally sound control of Tebenna issikii (Lepidoptera: Choreutidae) in the laboratory. The corrected mortality of Tebenna issikii larvae was 100% at the 40 infective juveniles (Ijs)/larva 3 days after treatment with S. carpocapsae GSN1 strain in Petri dish. $LC_{50}$ value of S. carpocapsae GSN1 strain against Tebenna issikii was 5.7 Ijs. The mean penetration numbers of Ijs of S. carpocapsae GSN1 strain at the 5, 10, 20, 40 and 80 Ijs/larva in a Tebenna issikii larva were 1.4, 1.4, 3.2, 5.6 and 11.9 Ijs/larva, respectively. However penetration rate of Ijs of S. carpocapsae GSN1 strain at 5 Ijs/larva was the highest among other nematode concentrations. Progeny of S. carpocapsae GSN1 strain in a Tebenna issikii larva was higher with increasing nematode concentration.

곤충병원성 선충을 이용하여 우엉뭉뚝날개나방 (Tebenna issikii) 에 대한 생물적 방제 가능성을 알아보기 위하여 Steinernema carpocapsae GSN1 계통을 이용하여 실내에서 실험을 수행하였다. 우엉뭉뚝 날개나방 유충 당 40 마리 이상의 S. carpocapsae GSN1 계통 처리 시 우엉뭉묵날개나방 유충은 100% 치사되었으며 반수치시농도$(LC_{50})$는 5.7마리였다. 우엉뭉묵날개나방의 유충 한 마리에 S. carpocapsae GSN1 계통 감염태 유충을 5, 10, 20, 40 및 80 마리로 접종한 결과 1.4, 1.4, 3.2, 5.6 및 11.9 마리의 선충이 침입하였는데 침입율은 5 마리 처리에서 가장 높았다. 접종 농도가 높아짐에 따라 우엉뭉뚝날개나 방 유충에서 S. carpocapsae GSN1 계통의 증식수는 증가하였다.

Keywords

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