Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Comparison of physical characteristics of eggs of Trachemys scripta elegans, Pseudemys concinna, and Mauremys reevesii

붉은귀거북(Trachemys scripta elegans)과 리버쿠터(Pseudemys concinna), 국내종 남생이(Mauremys reevesii) 간 알의 외형적 특징 비교

  • Seung-Ju Cheon (School of Biological Sciences and Biotechnology, Chonnam National University) ;
  • Choong-Ho Ham (School of Biological Sciences and Biotechnology, Chonnam National University) ;
  • Seung-Min Park (School of Biological Sciences and Biotechnology, Chonnam National University) ;
  • Ju-Hee Bae (Seoul Grand Park) ;
  • Ju-Hee Lee (Seoul Grand Park) ;
  • Seong-Ik Jo (Wolchulsan National Park Office) ;
  • Suk-Jin Cheon (Wolchulsan National Park Office) ;
  • Ha-Cheol Sung (Department of Biological Sciences, Chonnam National University)
  • 천승주 (전남대학교 생물과학.생명기술학과) ;
  • 함충호 (전남대학교 생물과학.생명기술학과) ;
  • 박승민 (전남대학교 생물과학.생명기술학과) ;
  • 배주희 (서울대공원 종복원연구실) ;
  • 이주희 (서울대공원 종복원연구실) ;
  • 조성익 (국립공원공단) ;
  • 천숙진 (국립공원공단) ;
  • 성하철 (전남대학교 생물학과)
  • Received : 2023.01.19
  • Accepted : 2023.05.30
  • Published : 2023.06.30
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Abstract

The main factor of biodiversity decline in major biological populations around the world is invasion of alien species. To protect native species, it is necessary to manage alien species. Recently, to eradicate ecosystem disturbance caused by alien species in Korea, many efforts have been made to capture individuals using nets and purchase captured individuals. However, there is no standard for classifying species due to the form of nest site or external characteristics of eggs of freshwater turtles. Thus, Mauremys reevesii eggs might be discarded due to mistaking as eggs of alien turtles. Based on more data, this study aims to compare and analyze external differences among eggs of Trachemys scripta elegans, Pseudemys concinna, and M. reevesii and use them as reference materials in the process of eradicating alien turtles. This study measured characteristics of eggs of the three turtle species. As a result of comparison, all variables of external characteristics of alien turtles and M. reevesii eggs showed significant differences. The shape of egg was also different, with eggs of T. scripta elegans and P. concinna showing a bicone shape and those of M. reevesii showing an ellipsoid shape. In conclusion, based on results of previous studies and the present study, eggs of M. reevesii, T. scripta elegans, and P. concinna are different in shape and structure. Thus, it is possible to distinguish between M. reevesii and invasive alien turtle using their eggs.

전 세계 주요 생물군의 생물다양성 저하의 주요 요인은 외래종의 침입이다. 국내종의 보호를 위해서 외래종의 관리가 필요한 실정이며, 최근 들어 국내에서 생태계교란 외래종의 퇴치를 위해 그물을 이용한 개체 포획, 포획된 개체들에 대한 수매 사업 등 많은 노력을 기울이고 있으며, 외래종 거북의 개체수를 줄이기 위해 산란된 알을 집중적으로 찾아서 폐기하고 있다. 그러나 현재 남생이(Mauremys reevesii)와 생태계교란 민물거북의 산란지 형태나 알의 외형적 특징으로 종을 구분하는 기준은 제시된 바 없기에, 외래종 거북의 퇴치 과정에 외래종 거북의 알로 오인되어 폐기되는 남생이 알이 발생할 가능성을 배제할 수 없다. 따라서 본 연구에서는 보다 많은 자료들을 바탕으로 붉은귀거북(Trachemys scripta elegans)과 리버쿠터(Pseudemys concinna), 남생이 간 알의 외형적 차이를 비교·분석하여 외래종 거북의 현장 퇴치 과정에 참고자료로 활용하고자 한다. 본 연구는 민물거북 3종의 알 특징을 측정하였다. 비교 결과 외래 거북과 남생이 알의 외형적 특성에서 모든 변수가 유의미한 차이를 보였다. 알의 모양 또한 붉은귀거북과 리버쿠터는 마름모형(Bicone), 남생이는 타원형(Ellipsoid)으로 차이를 보였다. 결론적으로, 선행 연구와 본 연구의 결과를 통하여 확인된 바와 같이 남생이와 붉은귀거북, 리버쿠터의 알은 모양과 구성 모두 다르기 때문에 현장에서 민물거북의 산란지를 발견할 경우 알을 이용하여 남생이와 외래거북의 구분이 가능할 것으로 판단된다.

Keywords

Acknowledgement

본 결과물은 환경부의 재원으로 한국환경산업기술원의 생물다양성위협 외래생물관리기술개발사업의 지원을 받아 연구되었습니다(2018002270001).

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