농약과학회지 (The Korean Journal of Pesticide Science)

  • 제20권1호
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  • Pages.72-81
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  • 2016
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  • 1226-6183(pISSN)
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  • 2287-2051(eISSN)
한국농약과학회 (The Korean Society of Pesticide Science)
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몇 가지 약제처리에 대한 꼬마배나무이(Cacopsylla pyricola Foerster)의 섭식행동 변화 및 살충효과

Changed in Feeding Behavior of Cacopsylla pyricola Foerster (Hemiptera: Psyllidae) and Activities of Several Insecticides

  • 박민우 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 권혜리 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 유용만 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 윤영남 (충남대학교 농업생명과학대학 응용생물학과)
  • Park, Min-Woo (Department of Agricultural Biology, Graduate School, Chungnam National University) ;
  • Kwon, Hay-Ri (Department of Agricultural Biology, Graduate School, Chungnam National University) ;
  • Yu, Yong-Man (Department of Agricultural Biology, Graduate School, Chungnam National University) ;
  • Youn, Young-Nam (Department of Agricultural Biology, Graduate School, Chungnam National University)
  • 투고 : 2016.03.04
  • 심사 : 2016.03.10
  • 발행 : 2016.03.31
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초록

꼬마배나무이의 섭식행동과 살충제를 처리하였을 경우 꼬마배나무이의 섭식행동에 미치는 영향을 알아보기 위하여 EPG 기술을 사용하여 기록하고 분석하였으며 약효실험을 실시하였다. 약제를 처리하였을 경우에 나타난 꼬마배나무이의 섭식행동의 패턴은 약제를 처리하지 않은 상태에서 나타나는 섭식행동의 패턴과 약제별로 출현 양상과 빈도가 다르게 나타났다. 배나무 잎에 서로 다른 약제 5종을 처리하였을 경우, 약제들 사이에 차이가 나타나는 패턴은, 첫째, 섭식을 하지 않는 파형 Np 시간이며, 가장 길게 나타난 것은 benfuracarb를 처리하였을 때이다. 둘째, 식물체에 침투할 때에 나타나는 파형 PA에 소요한 시간이 차이를 나타냈으며 가장 긴 시간을 필요로 한 경우는 flonicamid를 처리하였을 때이다. 셋째, 물관부에서 섭식할 때에 나타나는 파형 PG에 소요된 시간이 차이를 나타냈으며, 약제 중 물관부 섭식에 많은 시간을 소요한 경우는 deltamethrin과 fenitrothion을 처리하였을 때이다. 약제를 처리하여 EPG 기록한 결과 시간대별 꼬마배나무이의 섭식 소요 시간의 비율은 섭식을 하지 않는(Np) 시간의 비율이 식물체 침투(PA+PB), 유조직 침투와 섭식(PC1+PC2), 물관부 체관부 섭식에 소요하는 시간(PD+PE1+PE2, PG)에 비하여 더 많은 비율을 차지하는 것으로 나타났다. 5 종류의 살충제 중, 직접처리 24시간 후 imidacloprid의 살충률이 가장 높았으며, 48시간 이후부터는 모든 살충제에서 100%의 살충률을 나타내었다. 간접처리한 결과, benfuracarb가 다른 살충제에 비해 높은 살충률을 기록했는데, 이는 EPG 섭식행동 실험결과에서 benfuracarb에 의해 구침을 빼고 있는 Np패턴의 시간이 가장 길게 기록된 것과 일치하는 결과를 보여주었다.

Feeding behaviors of the pear psylla, Cacopsylla pyricola, and their changing feeding behaviors were recorded and analyzed with an electrical penetration graph (EPG) analysis against 5 insecticides. And their mortality against insecticides were carried out in the laboratory. General feeding behavior patterns of C. pyricola were changed by insecticide treatments. Especially, the type and frequency of waveforms differently occurred depending on a sort of insecticides treated. Total duration of transition to waveform PE1 and phloem ingestion (waveform PE2) were significantly different between treatment and non-treatment of insecticides. When 5 different insecticides were treated on pear leaves, difference of feeding patterns were recorded. In case of treatment of benfuracarb, total duration of non-probes (waveform Np) was appeared higher than any other insecticide. However, when flonicamid and deltamethrin were treatment, total duration of stylet penetration (waveform PA) and xylem ingestion (waveform PG) were appeared higher than other insecticide, respectively. As results feeding behaviour of C. pyricola after treated insecticides with time-based consumed rate of C. pyricola, the rate of non-probe (waveform Np) was longer than start penetration (waveform PA), penetration and ingestion in parenchyma cells (waveform PC1+PC2), ingestion at phloem (waveform PD+PE1+PE2) and xylem (waveform PG). As result of direct spray treatment to C. pyricola, mortality of C. pyricola against imidacloprid was higher than any other insecticide on 24 hours after treatment. However, all of insecticides showed 100% mortality of after 48 hours. On the other hand, when 5 insecticides sprayed on the pear leaves and then C. pyricola located on the treated leaves, benfuracarb showed the most toxicity against C. pyricola among insecticides. These result was consistent with the EPG results that showed relatively longer total duration time of waveform Np (non-probes) by benfuracarb treatment.

키워드

참고문헌

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