동자개, Pseudobagrus fulvidraco(Teleostomi : Siluriformes)의 세포유전학적 연구

Cytogenetic Analysis of Bagrid Catfish, Pseudobagrus fulvidraco(Teleostomi : Siluriformes)

  • Park, In-Seok (Department of Marine Living Resources, Kunsan National University) ;
  • Lee, Chung-Lyul (Department of Biology, Kunsan National University)
  • 발행 : 1996.12.31

초록

동자개, Pseudobagrus fulvidraco의 염색체수는 2n=52(1~9번 중부염색체 : 상대길이 2.89~6.22, 완비 1.09~1.58 ; 10~22번 차중부염색체: 상대길이 2.88~5.88, 완비 1.80~3.65; 23~26번 단부염색체 : 상대길이 2.63~3.30, 완비 9.01~10.67)였으며 fundamental number는 104이였다. 이형의 성염색체는 발견되지 않았다. 적혁구를 대상으로한 간 측정, 계측 항목에서 암 수간 유의한 차이는 없었으며(p<0.05), 적혈구 세포와 핵의 크기는 각각 $11.03{\times}9.67{\mu}m$$4.18{\times}3.66{\mu}m$이였다. 암 수에서 적혈구 수는 $6{\sim}7{\times}105/ml$이였다. 아가미 조직에서 인 계수시 1개 혹은 2개의 인형성부위가 나타나 2배체의 특성을 나타내었다.

The chromosome numbers of bagrid catfish, Pseudobagrus fulvidraco was 52, nine pairs (No. 1 to 9) were metacentrics with the range of relative length 2.89~6.22 and arm ratio 1.09~1.58 ; thirteen pairs (No. 10 to 22) were submetacentrics with the range of relative length 2.88~5.88 and arm ratio 1.80~3.65 ; and all other pairs (No. 23 to 26) were acrocentrics with the range of relative length 2.63~3.30 and arm ratio 9.01~10.67, and fundamental number was 104. Heteromorphic sex chromosomes were not found. There was not exist significant difference in resultant erythrocyte measurements and parameters between female and male (p<0.05). The mean sizes of cell and nucleus, were $11.03{\times}9.67{\mu}m$ and $4.18{\times}3.66{\mu}m$ respectively. The number of erythrocytes of both females and males were $6{\sim}7{\times}10^5/ml$. Gill tissues from diploid individuals had cells with one or two nucleoli.

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