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Establishment of Discriminating Concentration based Assessment for Insecticide Resistance Monitoring of Palm thrips

오이총채벌레의 약제 저항성 진단을 위한 판별농도 기반 생물검정법 확립

  • Jeon, Sung-Wook (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Park, Bueyong (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Park, Se-Keun (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Lee, Sang-Ku (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Ryu, Hyun-Ju (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Lee, Sang-Bum (Division of Crop Protection, National Institute of Agricultural Science, RDA) ;
  • Jeong, In-Hong (Division of Crop Protection, National Institute of Agricultural Science, RDA)
  • 전성욱 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 박부용 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 박세근 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 이상구 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 류현주 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 이상범 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 정인홍 (농촌진흥청 국립농업과학원 작물보호과)
  • Received : 2017.11.01
  • Accepted : 2017.12.01
  • Published : 2017.12.31

Abstract

For our survey of insecticidal resistance of Palm thrips (Thrips palmi Karny), we established the discriminating time (DT) and concentration (DC) of nine insecticides, and we conducted a bioassay about seven local populations via leaf-dipping methods. The discriminating times of the recommended concentration (RC) were 24 h at emamectin benzoate EC and spinetoram SC, 48 h at chlorfenapyr EC, 72 h at spinosad SC, cyantraniliprole EC, acetamiprid WP, dinotefuran WG, imidacloprid WP and thiacloprid SC after treatment. The DC estimated the concentration which showed the difference within the mortalities of these local populations. The DCs were emamectin benzoate EC $0.013mg\;L^{-1}$ (RC, $10.8mg\;L^{-1}$), spinetoram SC $0.125mg\;L^{-1}$ (RC, $25.0mg\;L^{-1}$), chlorfenapyr EC $0.25mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$), spinosad SC $0.083mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$) and cyantraniliprole EC $5.0mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$), and DCs of neonicotinoids were their RCs, that is, acetamiprid WP (RC, $40.0mg\;L^{-1}$), dinotefuran WG (RC, $20.0mg\;L^{-1}$), imidacloprid WP(RC, $50.0mg\;L^{-1}$) and thiacloprid SC (RC, $50.0mg\;L^{-1}$). From our investigation into the resistance of the local populations with DT and DC application, the neonicotinoid insecticides have shown a high resistant level for all the local populations, and the other insecticides have demonstrated low or non-resistance. In the use of neonicotinoid insecticides to control Palm thrips, one must take caution. As a result, the establishment of DT and DC in the single dose bioassay method was helpful for surveying the insecticide response dynamics and the development of an insecticide resistance management strategy.

오이총채벌레의 약제저항성 발달 양상을 조사하기 위하여 엽침지법을 이용한 생물검정을 실시하였다. 국내 7개 재배 시설지역에서 오이총채벌레를 채집하였고 9개 시험 약제를 선정하고 가장 효과적인 약효 판별 시간 및 단일 약량기반 판별 농도를 설정하여 약제반응을 조사하였다. 추천 농도(recommended concentration, RC)에서의 약제별 판별 시간은 emamectin benzoate EC 및 spinetoram SC는 처리 후 24시간, chlorfenapyr EC는 48시간, spinosad SC, cyantraniliprole EC, acetamiprid WP, dinotefuran WG, imidacloprid WP, thiacloprid SC는 72시간으로 설정하였다. 판별 농도(discriminating concetration, DC)는 7개 오이총채벌레 계통의 추천 농도에서 살충력을 조사한 결과 지역별 약제반응의 차이를 관찰할 수 없는 경우에는 처리 약량을 줄이거나 늘려 지역별 차이를 볼 수 있는 농도로 설정하였다. 약제별 판별 농도는 emamectin benzoate EC $0.013mg\;L^{-1}$ (RC, $10.8mg\;L^{-1}$), spinetoram SC는 $0.125mg\;L^{-1}$ (RC, $25.0mg\;L^{-1}$), chlorfenapyr EC는 $0.25mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$), Spinosad SC는 $0.083mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$), cyantraniliprole EC는 $5.0mg\;L^{-1}$ (RC, $50.0mg\;L^{-1}$)으로 설정하였고, 네오이코티노이드 계통인 acetamiprid WP (RC, $40.0mg\;L^{-1}$), dinotefuran WG (RC, $20.0mg\;L^{-1}$), imidacloprid WP (RC, $50.0mg\;L^{-1}$), thiacloprid SC(RC, $50.0mg\;L^{-1}$)는 추천 농도를 판별 농도로 설정하였다. 설정된 판별 농도와 판별 시간을 적용하여 생물 검정을 실시한 결과, acetamiprid를 포함한 4종의 네오니코티노이드계 약제에서는 모든 지역에서 저항성이 발달되고 있어 약제저항성 관리가 필요할 것으로 판단되었다. 그밖에 emamectin benzoate 등 5종 약제는 추천 농도에서 살충력이 모든 지역에서 100%를 보여 약제저항성은 아직 발달되지 않았다. 제시된 약제 효율 판별 시간 및 판별 농도 기준 단일 약량 생물검정법을 활용한 지속적인 모니터링을 실시한다면 국내 오이총채벌레의 약제저항성 동태 추적 및 약제저항성 관리에 크게 도움이 될 것이다.

Keywords

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