Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Molecular Identification, Ontogeny and Evolutionary Note of Echelus uropterus Leptocephali

날붕장어(Echelus uropterus) 엽상자어의 분자동정, 개체발생 및 진화학적 고찰

  • Ji, Hwan-Sung (Department of Marine Biology, Pukyong National University) ;
  • Lee, Soo-Jeong (Department of Marine Biology, Pukyong National University) ;
  • Kim, Jin-Koo (Department of Marine Biology, Pukyong National University)
  • 지환성 (부경대학교 자원생물학과) ;
  • 이수정 (부경대학교 자원생물학과) ;
  • 김진구 (부경대학교 자원생물학과)
  • Received : 2011.08.18
  • Accepted : 2011.09.16
  • Published : 2011.09.30
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Abstract

The seven leptocephali (14.6~68.0 mm in total length) of the family Ophichthidae, from the East Sea of Korea, were identified using 12S rRNA 861-bp sequences and their morphological development were described. Our seven leptocephali were identified to Echelus uropterus based on genetic distance (d=0.000) being well consistent with that of adult E. uropterus. Our seven leptocephali of E. uropterus are characterized by morphological combinations: caudal fin present; the melanophores present in series of nine gut swellings; total myomeres 154~158; body depth in total length less than 10%; eight black horizontal bands present from anus to caudal fin base. Our morphological and molecular results suggest that E. uropterus may be an intermediate group between subfamily Ophichthinae and Myrophinae.

동해에서 바다뱀과 엽상자어 7개체(TL 14.6~68.0mm)를 채집하여, 미토콘드리아 DNA 12S rRNA 861 bp 염기서열로 종을 동정하고, 이들의 개체발생을 기술하고, 진화적 관계를 고찰하였다. 바다뱀과 엽상자어 7개체는 날붕장어 성어와 유전거리(d=0.000)에서 잘 일치하였다. 날붕장어 엽상자어 7개체는 9개의 소낭이 항문 앞까지 존재하고, 전체 근절수가 154~158개, 전장에 대한 체고가 10% 이하이며, 흑색소포가 항문 뒤부터 꼬리지느러미 앞까지 8개 분포하는 형태적 특징을 보였다. 엽상자어의 형태 및 분자 분석결과를 통해 날붕장어는 진화학상 바다뱀아과 및 갯물뱀아과 사이에 위치하는 그룹으로 사료된다.

Keywords

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