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침입외래종 붉은귀거북의 제주도 내 분포 및 현황

Distribution and Status of the Alien Invasive Red-eared Slider (Trachemys scripta elegans) in Jeju Island, South Korea

  • 오홍식 (제주대학교 과학교육학부) ;
  • 박선미 (제주대학교 과학교육학부) ;
  • ;
  • 김유경 (제주대학교 교육과학연구소) ;
  • 김태욱 (국립공원관리공단 종복원기술원) ;
  • 한상현 (제주대학교 교육과학연구소)
  • Oh, Hong-Shik (Faculty of Science Education, Jeju National University) ;
  • Park, Seon-Mi (Faculty of Science Education, Jeju National University) ;
  • Adhikari, Pradeep (Faculty of Science Education, Jeju National University) ;
  • Kim, Yoo-Kyung (Educational Science Research Institute, Jeju National University) ;
  • Kim, Tae-Wook (Species Restoration Technology Institute, Korea National Park Service) ;
  • Han, Sang-Hyun (Educational Science Research Institute, Jeju National University)
  • 투고 : 2017.02.22
  • 심사 : 2017.03.20
  • 발행 : 2017.03.31

초록

본 연구는 제주도에서 외래침입종인 붉은귀거북 (Trachemys scripta elegans)의 지리적 분포와 현황을 살펴보기 위하여 수행되었다. 붉은귀거북의 서식지는 총 32개 지점이었고, 25개의 연못과 5개의 저수지, 1개의 하천과 1개의 웅덩이에서 관찰되었다. 발견된 서식지 중에서 13개 지점은 이번 조사에서 새롭게 확인되었고, 나머지 19개 지점은 기존 연구에서 보고된 지점이었다. 반면, 사전 연구에서 보고된 서식지 중 9개 지점에서는 붉은귀거북이 관찰되지 않았다. 전체적으로 붉은귀거북 133개체가 관찰되었다. 그중에서 39개체의 유체들이 19개 서식지에서 발견되었고, 이는 제주도의 야생생태계에서 붉은귀거북들이 번식활동을 하고 있음을 의미하는 것이다. 바다에 의한 지리적 격리로 19세기까지 제주도에는 담수거북류가 서식하지 않았다. 따라서 붉은귀거북 서식지와 개체수의 증가는 애완용이나 다른 목적으로 도입된 이후 인간에 의한 방류, 자연 상태에서의 번식에 의한 결과로 추정되었다. 본 연구의 결과는 제주도에서 고유 야생 동물에 대한 보존프로그램의 운영과 침입외래종인 붉은귀거북에 대한 관리 계획 수립에 유용하게 활용될 것이다.

This study was conducted to determined the status and geographical distribution of the alien invasive Red-eared slider (Trachemys scripta elegans) turtle on Jeju Island. We found thirty-two Red-eared slider habitats including twenty-five ponds, five agricultural reservoirs, a puddle and a stream. Among those, thirteen sites are newly determined habitats of the turtle. The remaining nineteen are previously reported. However, we could not find any turtles at nine sites, which were documented as turtle habitats in earlier reports. A total of one hundred thirty-three turtles were observed. Among them, we determined that thirty-nine were juvenile turtles, found in nineteen different habitats, indicating estimating that Red-eared sliders produced their progeny in the wild of this island. Because of geographical isolation by the ocean, no freshwater turtle had been found until $19^{th}$ Century. Therefore, the increased number of finding sites and Red-eared sliders indicate the possibility of human release of their pets or for other purposes, and natural propagation in the wild on Jeju Island. Our findings will be useful for management planning to deal with this invasive species, and implementation of a conservation program for native wildlife on Jeju Island.

키워드

참고문헌

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