한국양식학회지 (Journal of Aquaculture)

한국양식학회 (The Korean Society of Fisheries and Aquatic Science)
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한국산 누치속 어류 3종의 세포유전학적 연구

Cytogenetic Analysis of Three Hemibarbus Species (Cypriniformes) from Korea

  • 방인철 (순천향대학교 해양생명공학과) ;
  • 이윤아 (순천향대학교 해양생명공학과) ;
  • 이완옥 (국립수산과학원 중부내수면연구소)
  • Bang, In-Chul (Department of Marine Biotechnology, Soonchunhyang University) ;
  • Lee, Yoon-A (Department of Marine Biotechnology, Soonchunhyang University) ;
  • Lee, Wan-Ok (Central Inland Fisheries Research Institute, NFRDI)
  • 발행 : 2008.11.25
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초록

한국산 누치속(genus Hemibarbus) 어류 3종에 대한 세포유전학적 특성을 구령하기 일해 적혈구 세포 크기, 세포당 DNA 함량 및 염색체 핵형을 분석하였다. 누치 H. labeo, 참마자 H. longirostris 및 어름치 H. mylodon의 적혈구 크기를 비교한 결과, 적혈구 세포 장경, 세포 표면적 및 세포 체적에서 어름치가 다른 2종보다 크게 나타났다(P<0.05). 그러나 DNA 함량은 적혈구 세포 크기와 다른 경향을 보여 2.33-2.51 범위로 3종간에 유의적인 차이를 보이지는 않았다(P>0.05). 누치속 어류 3종의 염색체 수는 모두 2n=50개로 나타났으나 핵형에 있어서는 종별로 서로 달라 누치 16M+16SM+18T,A (Fundamental number: NF, 82), 참마자 18M+16SM+16T,A (NF, 84) 그리고 어름치가 18M+24SM+8T,A (NF, 92)로 나타나 3종은 핵형에서 뚜렷한 차이를 보였다.

Cytogenetic characteristics of three Hemibarbus species (H. labeo, H. longirostris and H. mylodon) were analyzed based on erythrocyte measurement, flow cytometric estimation of cellular DNA content, and karyological analysis. Average nuclear volumes for H. labeo, H. longirostris and H. mylodon were 22.5, 21.7 and $26.0\;{\mu}m^3$, respectively. The estimated genome sizes of those three species were not significantly different from one another, being recorded as 2.51, 2.33 and 2.35 pg/cell for H. labeo, H. longirostris and H. mylodon, respectively. Modal chromosome numbers of the three species were the same as 2n = 50. However, their karyotypes and fundamental numbers (FN) were different among species; 16M+16SM+18T/A (FN = 82) for H. labeo, 18M+16SM+16T/A (FN = 84) for H. longirostris and 18M+24SM+8T/A (FN = 92) for H. mylodon.

키워드

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