Laboratory Studies on the Reproductive Behavior of Red-Striped Golden Stink-Bug, Poecilocoris lewisi Distant (Hemiptera : Scutelleridae)

실내사육에서 광대노린재(Poecilocoris lewisi Distant)의 생식행동

  • 김남정 (농촌진흥청 농업과학기술원 농업생물부) ;
  • 설광열 (농촌진흥청 농업과학기술원 농업생물부)
  • Published : 2004.06.01

Abstract

Reproductive behavior of the red-striped golden stink-bug, Poecilocoris lewisi Distant, was investigated in a room at 25${\pm}$1$^{\circ}C$, 60${\pm}$5% R.H. and the 16L:8D photo regimen. Mating of adults started on the 9th day after emergence, peaked 84.5% on the 21st day. Mating behavior of this insect was observed as follows : approach, antennal contact, mount, abdominal approach and copulation (end-to-end position). Males were quite active and produced by rubbing their body with the cages while searching for the females. However, the females responded passively during mating. Studios were further carried to see the response of virgin pairs under controlled conditions. It was observed that 69% of pairs succeeded in mating within one hour after the lights were switched on. Females remained unreceptive for 7 days of first mating, however, males were very much positive subject to the availability of virgin females. Although the remating frequency of female was positively correlated with fertility, but a male showed lower fertility as its frequency increased.

광대노린재(P lewisi)의 실내 계대사육법을 확립하기 위해 먼저 실내에서의 생식행동을 구명하였다. 고온장일조건($25^{\circ}C$, 16Lㆍ8D)의 사육실에서 사육하면서 교미행동과 다중교미가 산란성에 미치는 영향에 대해 조사하였는데 광대노린재 성충의 교미는 성충 일령별로 9일째부터 시작되어 17일 이후는 교미율이 증가(60% 이상)하여 성충 21일째 84.5%로 피크를 이루였다. 광대노린재의 교미행동과정은 탐색배회, 접근, 더듬이접촉, 올라타기, 복부말단접근, 교미(끝에 끝 자세)를 취하는 것으로 조사되었다. 수컷은 교미행동 전 과정에서 능동적이었으며 또한 암컷에게 올라타기를 하기 전까지 마찰음을 내였으나 대부분의 암컷은 교미에 수동적이었다. 교미가 이루어지는 시간은 조명 후 1시간 내에 69% ,2시간 8% ,3시간 6% ,4시간 16% ,5시간 1%로 거의 4시간 내에는 교미가 이루어지는 것으로 관찰되었다. 암컷의 재교미는 첫 교미 후7일 동안 20% 정도 이루어졌으나 수컷의 재교미율은 암컷보다 월등히 높았다. 한편 암컷은 1회 교미 후 시간이 경과함에 따라 산란된 알의 부화율이 감소하였으나 재교미를 함으로서 산란된 알의 부화율이 향상되었고 수컷은 교미횟수가 증가할수록 산란된 알의 부화율이 감소하였다.

Keywords

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