Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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The Analysis and Conservation of Patch Network of Endangered Butterfly Parnassius bremeri(Lepidoptera: Papilionidae) in Fragmented Landscapes

조각난 경관에서 멸종위기종 붉은점모시나비의 서식지 패치 네트워크 분석과 보전

  • Received : 2011.10.18
  • Accepted : 2012.02.07
  • Published : 2012.03.01
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Abstract

Understanding the ecological complexity and habitat of a species are crucially important to conserve an endangered species. This study evaluated the patch network ecology of the endangered species $Parnassius$ $bremeri$. The results indicated that 188 individuals were captured and 220 were recaptured, respectively. The sex ratio of female: male was 42:146; males were four times more abundant than females. The average longevity of an adult was $3.93{\pm}3.93$ days (male, $4.0{\pm}3.9$; female, $2.5{\pm}1.0$ days); the maximum longevity was 14 days for males and 13 days for females, respectively. Therefore, the expected longevity of males was longer than that of females. The average emigration distance for the species was 377 m, and the maximum emigration distance was 1550 m. The analysis of patch connectivity and individual colonization revealed that the ideal distance between patches was about 300 m. Moreover, a >600 m patch distance decreased the colonization rate severely. We also observed higher immigration and emigration between patches that were clustered in close proximity. This leads us to conclude that a higher number of patches at a close distance is best suited for $P.bremeri$. We find these results to be crucial to determine a policy to protect and conserve this endangered species.

종에 대한 생태적 특성과 서식지에 대한 이해는 종의 보전에 매우 중요하다. 본 연구는 멸종위기에 처해있는 붉은점모시나비의 생태적 특성을 바탕으로 서식지 패치네트워크를 분석하였다. 그 결과 포획 개체수는 188개체, 재포획은 220회 되었다. 그리고 암수의 비율은 42:146개체로 암컷보다는 수컷이 약 4배 많은 것으로 나타났다. 또한 개체의 평균생존일수는 $3.93{\pm}3.93$일(수컷: $4.0{\pm}3.9$, 암컷: $2.5{\pm}1.0$), 암컷과 수컷의 최대 생존일수는 각각 13, 14일 나타났고, 수컷이 암컷에 비하여 오래 생존하는 개체가 많은 것으로 나타났다. 종의 평균이동거리는 377 m을 보였으며 최대 1550 m까지 이동하는 것으로 나타났다. 패치연결성과 개체생존이주율의 추정에서 패치간의 거리가 약 300 m 이내가 종의 이주에 적합하며 600 m 이상 떨어질 경우 개체생존이주율이 급격하게 감소하는 것으로 나타났다. 또한 종의 이주 빈도는 근접한 거리에서 다수의 패치가 있는 곳에서 활발하게 일어나고 있어 종의 보전을 위해서는 근접한 거리에 다수의 패치가 필요함을 알 수 있었다. 이번 연구 결과는 붉은점모시나비의 서식지 특성이 분석되어 종 보전을 위한 서식지 디자인 및 설계에 유용하게 사용될 수 있을 것으로 본다.

Keywords

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