Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Occurrence Pattern and Damage of Scirtothrips dorsalis (Thysanoptera: Thripidae) in Primary Host and Citrus Orchards on Jeju Island

제주도에서 볼록총채벌레의 1차 기주식물 과원과 감귤원에서 발생양상과 피해

  • Hwang, Rok-Yeun (Citrus Research Institute, National Institute of Horticultural & Herbal science, Rural Development Administration) ;
  • Kim, Dong-Soon (Faculty of Bioscience and Industry, College of Applied Life Science, SARI, Jeju Nat'l. Univ., The Research Institute for Subtropical Agriculture and Biotechnology, Jeju National University) ;
  • Hyun, Jae-Wook (Citrus Research Institute, National Institute of Horticultural & Herbal science, Rural Development Administration)
  • 황록연 (국립원예특작과학원 감귤연구소) ;
  • 김동순 (제주대학교 생명자원과학대학(SARI) 식물자원환경전공) ;
  • 현재욱 (국립원예특작과학원 감귤연구소)
  • Received : 2016.10.27
  • Accepted : 2016.11.08
  • Published : 2016.12.01
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Abstract

The damage of citrus fruits caused by Scirtothrips dorsalis Hood has being increased in Jeju, Korea. The seasonal abundance of S. dorsalis and its injury symptoms in citrus orchards have been studied since the endemic outbreak in Jeju, but studies for the occurrence pattern of S. dorsalis in citrus orchards influenced by adjacent primary hosts have not been fully conducted yet. We selected kiwi- and mango-citrus adjacent orchards to study the migration pattern of S. dorsalis toward to citrus orchards. Yellow-colored sticky traps were used for monitoring the seasonal abundance of S. dorsalis and their migration pattern in two orchards. In citrus orchards, also, we placed sticky traps at 0, 5, 10, 15 and 20 m apart from the border of kiwi orchard, and 0, 7 and 20 m apart from the border of mango orchard. The seasonal occurrence pattern of S. dorsalis caught on sticky traps were similar between two adjacent orchards. However, the abundances in kiwi or mango orchard was much higher than those of citrus. Also, it was found that densities, distribution and damage of S. dorsalis in citrus orchards depend highly on the distance from the border of kiwi and mango orchards. This result suggested that the primary hosts such as kiwi and mango plants influence the occurrence of S. dorsalis in adjacent citrus orchards. And this information may provide a basic direction for establishing the management strategy of S. dorsalis in citrus orchards.

최근 감귤에서 볼록총채벌레의 피해가 증가하고 있다. 볼록총채벌레의 발생시기 및 피해증상에 관한 연구는 진행되었으나 주변 기주식물과의 관계에 관한 연구는 미흡한 실정이다. 본 연구는 볼록총채벌레 기주식물 150여 가지 중 제주도에 넓은 면적으로 재배되고 있는 망고, 키위 등의 1차 기주식물과 2차 기주식물인 감귤에서의 볼록총채벌레 발생의 유연관계를 구명하기 위해 수행되었다. 그 결과 1차 기주식물과원과 인접 감귤원의 볼록총채벌레 발생양상의 경우 밀도의 차이가 있을 뿐 발생 시기는 거의 동일하거나 감귤원에서의 발생이 약 1주일 가량 지연되어 나타났다. 1차 기주식물과원과 인접 감귤원의 트랩설치간격별 발생밀도의 경우 트랩설치간격이 짧을수록 총채벌레 포획수가 유의미하게 많았으며 과실 피해도 또한 유의미하게 높았다. 이는 1차 기주식물인 망고, 키위, 녹차 등이 인접 감귤원의 볼록총채벌레 발생에 직접적인 영향을 주고 있는 것을 나타내며 이는 추후 감귤원의 볼록총채벌레 방제연구에 기초자료로 활용 될 수 있을 것으로 생각된다.

Keywords

References

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