Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Wing Morphs and Parasitism Rates of the Small Brown Planthopper, Laodelphax striatellus (Hemiptera: Delphacidae) in Korea

국내 애멸구 (Laodelphax striatellus Fallen) (노린재목: 멸구과)의 시기별 날개형 및 기생율

  • Son, Byung-In (Entomology Program, Department of Agricultural Biotechnology, Seoul National University) ;
  • Jung, Jong-Kook (Entomology Program, Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Joon-Ho (Entomology Program, Department of Agricultural Biotechnology, Seoul National University)
  • 손병인 (서울대학교 농생명공학부 곤충학전공) ;
  • 정종국 (서울대학교 농생명공학부 곤충학전공) ;
  • 이준호 (서울대학교 농생명공학부 곤충학전공)
  • Received : 2014.11.12
  • Accepted : 2014.11.24
  • Published : 2014.12.01
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Abstract

The small brown planthopper, Laodelphax striatellus (Fall$\acute{e}$n) (SBPH) is one of the important rice pests in Korea, which transmits rice stripe virus (RSV) to rice. This pest is an indigenous species in Korea and has also known to migrate from China to the western coastal areas of Korea. This study was conducted to investigate the wing morphs of SBPH and its parasitism rate of Haplogonatopus atratus Esaki et Hashimoto in Korea. In 2014, SBPH were collected in April and July from 16 sites throughout South Korea and their wing morphs and parasitism rates were measured under the microscope. Percentage of brachypterous male in July was significantly declined compared to that in April, while that of brachypterous female did not change. A positive relationship was found between latitude and percentage of brachypterous adults in April. Parasitism rate of both nymphs and adults were higher in April than July. In addition, nymphal parasitism rate was generally higher in western coastal areas.

애멸구(Laodelphax striatellus (Fall$\acute{e}$n))는 벼줄무늬잎마름병을 매개하여 심각한 피해를 야기하는 벼 해충으로 국내에서 월동하는 토착종이며 중국에서 국내 서해안지역으로 비래하기도 한다. 본 연구는 애멸구의 분산과 개체군 동태의 기초자료로 활용하기 위해 국내 16지역에서 2014년 4월과 7월에 애멸구를 채집하여 발생시기에 따른 날개형태의 비율과 홍집게벌 기생율 현황을 파악하였다. 수컷은 4월보다 7월에 단시형의 비율이 유의미하게 낮았고, 암컷 단시형 비율은 차이가 없었다. 회귀분석 결과 4월의 단시형 비율이 위도가 증가함에 따라 증가하는 경향을 보였다. 약충 및 성충의 기생율은 7월보다 4월에 높았다. 또한 서해안지역의 약충 기생율이 대체적으로 높은 경향을 보였다.

Keywords

References

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