Occurrence of the Portuguese oyster Crassostrea angulata (Lamarck, 1819) along the coast of Shikoku Island, Japan

  • Sekino Masashi
    Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency
  • Fujiwara Atushi
    Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency
  • Yamashita Hiroyoshi
    Malaco-diversity Japan

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タイトル別名
  • Occurrence of the Portuguese oyster <i>Crassostrea angulata</i> (Lamarck, 1819) along the coast of Shikoku Island, Japan

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説明

We described a cryptic population of the Portuguese oyster Crassostrea angulata (Lamarck, 1819) identified from the coast of Shikoku Island, Japan. At the same location, we also confirmed the distribution of a recently recognized oyster species, C. dianbaiensis Xia, Wu, Xiao & Yu, 2014. As a diagnostic tool for species identification, we used the nucleotide sequences of three mitochondrial genes. These sequences were capable of reliably discriminating each of the above two species from their most closely related species: C. angulata from C. gigas (Thunberg, 1793), and C. dianbaiensis from C. bilineata (Röding, 1798). Our finding of a previously unrecognized distribution of these species provides important information to help promote the conservation of species diversity of Japanese oysters.

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