Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Predicting the Occurrence of Generation for Riptortus pedestris (Fabricius) Using Their Body Color

톱다리개미허리노린재의 체색변이를 이용한 발생세대 예측

  • Lee, Hyoseok (Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Jung, Jong-Kook (Freshwater Bioresources Research Division, Nakdonggang National Institute of Biological Resources) ;
  • Im, Jae Seong (Entomology Program, Department of Agricultural Biotechnology, Seoul National University) ;
  • Park, Marana (Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Lee, Seunghyun (Entomology Program, Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Joon-Ho (Research Institute of Agriculture and Life Sciences, Seoul National University)
  • 이효석 (서울대학교 농업생명과학대학 농업생명과학연구원) ;
  • 정종국 (국립낙동강생물자원관 담수생물조사연구실) ;
  • 임재성 (서울대학교 농생명공학부 곤충학전공) ;
  • 박마라나 (서울대학교 농업생명과학대학 농업생명과학연구원) ;
  • 이승현 (서울대학교 농생명공학부 곤충학전공) ;
  • 이준호 (서울대학교 농업생명과학대학 농업생명과학연구원)
  • Received : 2015.10.28
  • Accepted : 2015.11.10
  • Published : 2015.12.01
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Abstract

Riptortus pedestris (Fabricius) is one of the important insect pests of leguminous crops, which occurs in most areas of South Korea. It is hard to distinguish each generation in crop fields since not only the longevity of adult R. pedestris is long but also the developmental period is short. Especially, the 2nd generation adults cause enormous damage to soybean while the occurrence time is synchronized with the podding stage of soybean. Controlling the 1st generation of R. pedestris helps to decrease the damage by decreasing the 2nd generation density. This study was conducted to distinguish between the 1st generation and the overwintering generation by using differences in body coloration which is dependent on the day-length during the nymph stage. In addition, the difference was verified by the population dynamics model of R. pedestris. The occurrence time of 1st generation adults could be considered when the summer form is 20% or more. These results will be used for beneficial management decisions to reduce the 2nd generation population.

톱다리개미허리노린재(Riptortus pedestris (Fabricius))는 콩과 작물을 가해하는 해충으로 국내 대부분의 지역에서 발견된다. 톱다리개미허리노린재는 성충 수명이 길고 발육기간이 짧아 야외에서 여러 세대가 혼재되어 발생하고 있어 각 세대를 구분하기 어렵다. 특히, 제2세대 성충의 발생시기는 콩의 착협기와 일치하여 큰 피해를 주고 있어, 제1세대 성충의 방제는 제2세대 밀도를 감소시켜 콩과 작물의 피해를 줄이는데 도움이 될 것으로 예상된다. 따라서 본 연구는 약충기간의 광주기가 성충의 체색변이에 영향을 주는 특성을 이용하여 야외 포장에서 월동세대와 제1세대의 발생시기를 구분하였다. 또한 톱다리개미허리노린재 개체군 모형을 수립하고 적용하여 이를 검증하였다. 여름형 성충의 비율이 20% 이상 되는 시기를 제1세대 톱다리개미허리노린재 성충의 발생시기로 추정할 수 있으며, 이는 제2세대 성충의 밀도를 억제하기 위한 방제시기를 결정하는데 활용될 것으로 기대된다.

Keywords

References

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