韓国産ドジョウ科魚類5種の核型〔英文〕

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  • A chromosome study of five species of Korean cobitid fish.
  • カンコクサン ドジョウカ ギョルイ 5シュ ノ カクガタ エイブン

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The karyotypes of five cobitid fishes inhabiting South Korea were examined. Four species belonging to the genus Cobitis, viz., C. taenia lutheri, C. koreensis, C. longicorpus and C. rotundicaudata had a diploid chromosome number of 50, consisting of more monoarmed chromosomes than biarmed ones (NF; 64-70), while Misgurnus mizolepis was shown to have 48 chromosomes, suggesting the possibility of a Robertsonian rearrangement (2n=50→ 48, NF; 64) from closely related species (e.g., M. angillicaudatus). With reference to the information so far obtained, the karyotype evolution process in the family Cobitidae was discussed.

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