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Studies on the Karyotypes and Comparative DNA Values in Several Korean Cyprinid Fishes

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°­¿µ¼± ( Kang Yung-Sun ) 
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¹ÚÀºÈ£ ( Park Eun-Ho ) 
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Abstract

Çѱ¹»ê ´ã¼ö¾î·ù 4Á¾(À×¾î°ú)¿¡ ´ëÇÑ ¿°»öü ¹× DNA »ó´ë·®À» Á¶»çÇÏ¿© ¾Æ·¡¿Í °°Àº °á°ú¸¦ ¾ò¾î À̵éÀÇ ¼¼Æ÷À¯ÀüÇÐÀû Ư¡À» °èÅëÇÐÀûÀÎ ¸é¿¡¼­ °íÂûÇÏ¿´´Ù. 1) Âü¸¶ÀÚ(Hemibarbus longirostris) ¹× ´©Ä¡ (H. labeo)ÀÇ ¿°»öü¼ö´Â 2n=50À¸·Î½á ±×Áß Âü¸¶ÀÚ´Â 7½ÖÀÇ metacentric (A±×·ì), 14½ÖÀÇ submeta¿Í subtelocentric(B ±×·ì) ±×¸®°í acro ³»Áö telocentric ¿°»öü(C±×·ì) 4½ÖÀ¸·Î ±¸¼ºµÇ¸ç arm¼ö (AN)´Â 92¿´´Ù. ´©Ä¡ÀÇ ÇÙÇüÀº A, B ¹× C ±×·ìÀÌ °¢°¢ 9, 11 ±×¸®°í 5½ÖÀ¸·Î½á ANÀº 90À̵ȴÙ. 2) ¹öµé°³(Moroco lagowskii) ¹× ¹öµéÄ¡ (M. oxycephalus)ÀÇ ¿°»öü¼ö´Â ¿ª½Ã 2n=50À̾úÀ¸¸ç, À̵éÀÇ ÇÙÇüµµ ´Ù°°ÀÌ A±×·ìÀÌ 6½Ö, B±×·ìÀÌ 14½Ö ±×¸®°í 5½ÖÀÇ C±×·ìÀ¸·Î ÀÌ·ç¾îÁ® ÀÖÀ¸¸ç ANÀº 90À̾ú´Ù. 3) 4Á¾ÀÇ DNA»ó´ë·®Àº ¸ðµÎ ºØ¾îÀÇ ¾à 60%¿¡ ÇØ´çÇÏ¿´´Ù.

Karyological characteristics and relative DNA values were investigated in four species of the family Cyprinidae of Korean fresh-water. The results obtained were as follows; 1) The two Hemibarus species, H. longirostris and H. labeo, had the aiploid chromosome number of 50. The compliment of former consisted of 7 metacentric, 14 submets- and subtelocentric and 4 telo- or acrocentric pairs, whereas latter had 9, 11 and 5 pairs respectively, Total arm numbers (AN) were 92 and 90. 2) In the case of two species of genus Moroce, M. oxycephalus and M. lagowskii, their diploid number and karyotype showed in identical pattern for each other (2n=50); 6 pairs of metacentrics, 14 pairs of submeta- and subtelocentrics and 5 pairs of telo- or acrocentrics. The AN of both species were 90. 3) Relative DNA values of all species were measured as about 60% that of gold fish. From the above observation, the cytogenetical character was discussed with special concern to the phylogenetic significance.

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