Seasonal Occurrence and Ovarian Development of Bean Bug, Riptortus clavatus

톱다리개미허리노린재의 발생소장과 난소발육

  • Huh, Hye-Soon (Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Huh, Wan (Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Bae, Soon-Do (Plant Environ. Div, Yeongnam Agric. Res. Inst., Nat. Inst. Crop Science, RDA) ;
  • Park, Chung-Gyoo (Institute of Agriculture and Life Sciences, Gyeongsang National University)
  • 허혜순 (경상대학교 농업생명과학대학 농업생명과학연구원) ;
  • 허완 (경상대학교 농업생명과학대학 농업생명과학연구원) ;
  • 배순도 (영남농업연구소 식물환경과) ;
  • 박정규 (경상대학교 농업생명과학대학 농업생명과학연구원)
  • Published : 2005.09.01

Abstract

Seasonal occurrence and ovarian development of the bean bug, Riptortus clavatus Thunberg (Heteroptera: Alydidae), were studied at a soybean field and an university campus in which host plants are less available for the bug in Gyeongnam province with aggregation pheromone traps in 2004. It was assumed that the bug passed three generations per year at the university campus. Adults of the 1st generation might occur from early July to early August and that of the 2nd one from mid August to late September. Adults of the 3rd generation occurred from early October to mid November, entered reproductive diapause without carrying eggs in the ovaries of females during winter, and resumed activity from late March of the next year. Full-grown eggs in the ovaries of the overwintered females were first observed at the 1st half of May. Two peaks of occurrence, from early August to mid September and from mid October to mid November, were shown at soybean field that was sowed on May 24. The two peaks almost corresponded to those of the 2nd and 3rd generations at the university campus, respectively.

톱다리개미허리노린재의 집합페로몬을 이용하여 경남지방의 대학교 캠퍼스와 콩포장에서 톱다리개미허리노린재의 연중 발생소장과 난소발육을 조사하였다. 대학 캠퍼스에서 들다리개미허리노린재는 년간 3세대를 경과하는 것으로 추정되었다. 제1세대 성충은 7월 상순${\sim}$8월 상순까지, 제2세대 성충은 8월 중순${\sim}$9월 하순까지 발생하였다. 제3세대 성충은 10월 상순${\sim}$11월 중순에 발생하는데 난소내에 난이 없는 상태로 성충휴면에 들어가 이듬해 3월 하순부터 활동을 재개하였다. 월동 후 암컷성충의 난소에서 성숙란이 처음으로 관찰되는 시기는 5월 전반기였다. 콩포장(5월 23일 파종)에서는 8월 상순${\sim}$9월 중순, 10월 중순${\sim}$11월 중순의 2회의 뚜렷한 유살시기가 있었다. 이 두 시기는 대학 캠퍼스에서의 제2, 3세대의 유살시기에 해당하는 것으로 생각되었다.

Keywords

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