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Re-validation of Gonorhynchus adiscus and G. diplochilus (Teleostei: Cyprinidae) using morphological and molecular data

Home Forums Ichthyology Re-validation of Gonorhynchus adiscus and G. diplochilus (Teleostei: Cyprinidae) using morphological and molecular data

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    Matt
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    Zoology in the Middle East 61(4)

    Abstract

    Small and silvery cyprinid species from eastern Iran which are usually known asCrossocheilus latius are reviewed based on morphological and molecular characters of the mtDNA COI barcode region. We demonstrate that fishes which had been identified asCrossocheilus Kuhl & van Hasselt, 1823 in Iran actually belong to the genus GonorhynchusMcClelland, 1838 with two species: G. adiscus (Annandale, 1919) and G. diplochilus (Heckel, 1838), which are rediagnosed here. Both species are well distinguished by gill raker counts, number of scales between anus and anal fin, barbel size and minimum body depth. G. adiscus and G. diplochilus are also distinguished by molecular characters of the mtDNA COI barcode region. Both species are phylogenetically close to Gonorhynchus latius (Hamilton, 1822) which is restricted to India, Nepal and Bangladesh and to G. burmanicus (Hora, 1936), restricted to India and Myanmar. All of these four related taxa are phylogenetically closer to the genus Garra than the genus Crossocheilus (restricted to south-east Asia).

     

    Interesting stuff re. C. latius!

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