Genetic traits of the weatherfish Misgurnus sp. OK on the Okinawa Islands, southern Japan

DOI IR IR (HANDLE) Open Access

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  • 沖縄県におけるヒョウモンドジョウの遺伝的特性

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Specimens of weatherfish (genus Misgurnus) were collected from Okinawa, Yagaji and Yonaguni islands, Japan, to investigate their genetic variations based on mitochondrial DNA sequences (control region). Three and one haplotypes of Misgurnus sp. OK were identified from Okinawa Island and Yonaguni Island, respectively. All four sites on the west coast of Okinawa Island were dominated by a single haplotype, indicating a significant loss of genetic diversity among them. The highest genetic diversity was observed in a very small creek in eastern Nago, Okinawa Island, where three haplotypes co-occurred in nearly equal proportions. The population on Yagaji Island is likely to be introduced from M. anguillicaudatus in China or temperate Japan area. Genetic disturbances caused by this introduced population to the Okinawan native population are of concern.

Journal

  • Fauna Ryukyuana

    Fauna Ryukyuana 59 57-61, 2021-03-11

    Ryukyu University Museum, Fujukan

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