한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제26권5호
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  • Pages.668-674
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  • 2012
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

한국산장지뱀과의 성적이형

Sexual Size Dimorphism of Lacertid Lizards from Korea

  • 장민호 (국립공원관리공단 국립공원연구원) ;
  • 오홍식 (제주대학교 과학교육학과)
  • Chang, Min-Ho (National Park Research Institute, Korea National Park Service) ;
  • Oh, Hong-Shik (Dept. of Science Education, Jeju Univ.)
  • 투고 : 2012.06.08
  • 심사 : 2012.09.18
  • 발행 : 2012.10.31
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초록

본 연구는 한국에 서식하는 장지뱀과 3종인 표범장지뱀(Eremias argus), 아무르장지뱀(T. amurensis), 줄장지뱀(T. wolteri)의 외부 형질에 대한 성적 크기 차이(SSD)를 알아보기 위하여 수행되었다. 외부 형질 중 주둥이-항문 길이, 꼬리 길이, 머리 길이, 머리 폭, 앞다리 길이, 뒷다리 길이와 같은 6개 부위를 중심으로 수컷과 암컷을 비교하였다. 머리-항문 길이는 student's t 검정을, 나머지 부위는 머리-항문 길이를 공변량으로 이용하여 공분산 검정을 수행하였다. 머리 길이와 꼬리길이는 일반적인 장지뱀과의 특성과 마찬가지로 한국산 장지뱀과 3종 모두 수컷이 암컷보다 긴 것으로 나타났다. 추가적으로 표범장지뱀은 머리 넓이, 앞다리 길이, 뒷다리 길이, 줄장지뱀은 머리 넓이에서 수컷이 암컷보다 길었다. 머리-항문 길이는 한국산 장지뱀과 3종 모두 암 수 사이에서 유의한 차이가 없었다. 머리-항문 길이의 SSD의 원인을 파악하기 위해서는 수컷간의 싸움과 암컷 머리-항문 길이와 한 배 산란수의 관계와 같은 생태학적 정보가 필요하다. 한국산 장지뱀과 3종에 대한 생태학적 연구가 계속 진행된다면 SVL에서 SSD가 일어나지 않은 이유를 설명할 수 있을 것이다.

This study was conducted to find the sexual size dimorphism(SSD) in morphometric characters of three species, Eremias argus, Takydromus amurensis and T. wolteri in lacertid lizard from Korea. Six external traits, snout-vent length, tail length, head length, head width, forelimb length and hind-limb length were focused to compare two sexes among the each three lizards. Student's t-test was used to compare the adult SVL between the sexes for each species. For the other parts of the body, a one-way analysis of covariance(ANCOVA) with SVL as the covariate was used. In all these species, males have longer tail and head than females like general lacertid lizard. In addition, male E. arugus have broader head and longer forelimbs and hind-limbs than conspecific females. Likewise, male T. wolteri have broader head than females. In the three lacertid lizards from Korea, snout-vent length did not significantly differ between the sexes. To understand the causes for SSD in SVL, ecological information, such as the presence/absence of male-male combat and the correlation between the SVL of female and litter size, is required. Therefore, further ecological study on the three species of lacertid lizard from Korea will make it possible to explain the reason SSD is not found in SVL.

키워드

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