Species Composition of Orius spp. (Hemiptera: Anthocoridae) and Their Seasonal Occurrence on Several Plants in Korea

애꽃노린재류(Orius spp.)의 종류와 몇가지 식물에서 발생소장

  • 김정환 (농업과학기술원 농업해충과) ;
  • 이관석 (농업과학기술원 농업해충과) ;
  • 김용헌 (농업과학기술원 농업해충과) ;
  • 유재기 (농업과학기술원 농업해충과)
  • Published : 2001.09.01

Abstract

Field survey for Orius spp., predacious natural enemies of thrips pests, on several plants by beating or sweeping method revealed that O. sauteri, O. strigicollis, O. minutus, and O. nagaii habituated in open fields or in greenhouses of Korea. Among them, O. sauteri was the most dominant species at all areas (83.0~92.5%), followed by O. strigicollis and O. minutus. Especially, O. sauteri exclusively dominated on the economically important crops such as soybean, red pepper, and watermelon. On the other hand, O. strigicallis and O. nagaii occurred mainly on ornamental plants including chrysanthemum and rose and on rice, respectively, during summer-autumn season. The seasonal occurrence varied depending on the plant. Initial population of Orius spp. was first observed on white clover in late May, followed by on soybean, red pepper, an buck wheat in early June, indcating that movement of Orius spp. relates to the flowering time of the plant. Peak of Orius spp. abundance was found first in July and secondly in August or September. On white clover and buck wheat the first peak of abundance was one week earlier than on soybean and red pepper. Therefore, we suppose that wild plants such as white clover can serve as a reservoir for Orius spp. after overwintering.

Keywords

Natural enemy;Species composition;Seasonal occurrence;Orius spp. Orius sauteri