Karyotypes of Three Tanakia Bitterlings (Pisces, Cyprinidae) from East Asia
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Silver stained-NOR patterns as well as routine Giemsa stained karyotypes of 3 <i>Tanakia</i> species/subspecies from East Asia, <i>T. himantegus himantegus</i>, <i>T. h. chii</i>, and <i>T. somjinensis</i>, were described. This is the first description of karyotypes for <i>T. h. himantegus</i> and <i>T. somjinensis</i>. <i>Tanakia h. himantegus</i> (2<i>n</i>=48: 8M+20SM+18ST+2A) and <i>T. h. chii</i> (2<i>n</i>=48: 8M+20SM+18ST+2A) had distinct acrocentric chromosomes. In <i>T. somjinensis</i> (2<i>n</i>=48: 8M+20SM+20ST), acrocentric chromosomes were not found and Ag-NORs on the terminal region of the long arm were more prevalent than those on the terminal region of the short arm, being a characteristic that is unusual in bitterlings.
CYTOLOGIA 71(3), 251-255, 2006-09-25
Japan Mendel Society, International Society of Cytology