Chromosomes in fifteen species of Indian teleosts (Pisces)

Abstract

The somatic karyotypes of fifteen species of Indian teleostean fishes, namely, Mystus vittatus vittatus (2n = 54; 28 m + 22 sm + 2st + 2T) and Rita rita (2« = 54; 14 m + 34 sm + 6st) of the family Bagridae, Aspidoparia morar (2« = 48; 8m + 6sm + 34T), Cyprinus carpio communis (2n = 100; 24m + 24sm + 52T), Garra gotyla gotyla (2n = 50; 14m + 26sm + 10T), and Puntius stigma (2n = 48; 4m + 2sm + 42T) of the family Cyprinidae, Awaous grammepomus (2n = 46; 46T) of the family Gobiidae, Odontamblyopus rubicundus (2n = 46; 4m + 24sm + 8st + 10T) of the family Gobioididae, Macrognathus aculeatum (2n = 48; 8m + 2sm + 38T) and Mastacembelus pancalus (2n = 48; 14m + 12sm + 14st + 8T) of the family Mastacembelidae, Eleutheronema tetradactyla (2n = 48; 48T) of the family Mugilidae, Notopterus notopterus (2n = 42; 42T) of the family Notopteridae, Pisodonophis boro (2n = 38; 18m + 4sm + 4st + 12T) of the family Ophichthidae, Pangasius pangasius (2n = 58; 14m + 20sm + 2st + 22T) of the family Pangasiidae and Tetraodon cutcutia (2n = 42; 16m + 12sm + 4st + 10T) of the family Tetraodontidae are described. The germinal chromosomes in C. carpio communis, P. stigma and A. grammepomus have also been studied. The possible mechanism of karyotypic evolution in these species has been focussed and the possibility of the occurrence of chromosomal polymorphism in some populations of certain species of fish has also been pointed out. © 1987 Taylor & Francis Group, LLC.