The COI haplotype diversity of the pelagic polychaete Tomopteris (Annelida: Tomopteridae) collected from the Pacific coast off Kii Peninsula, central Japan

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  • Kin Ikuhiko
    Department of Environmental Biology, Graduate School of Bioscience and Biotechnology, Chubu University
  • Jimi Naoto
    Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University Centre for Marine & Coastal Studies, Universiti Sains Malaysia
  • Ohtsuka Susumu
    Takehara Station, Setouchi Field Science Center, Graduate School of Integrated Sciences for Life, Hiroshima University
  • Mizuno Gaku
    Department of Environmental Biology, Graduate School of Bioscience and Biotechnology, Chubu University
  • Nakamura Toru
    Training and Research Vessel Seisui-maru, Graduate School of Bioresources, Mie University
  • Maekawa Yoichi
    Training and Research Vessel Seisui-maru, Graduate School of Bioresources, Mie University
  • Oba Yuichi
    Department of Environmental Biology, Graduate School of Bioscience and Biotechnology, Chubu University

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タイトル別名
  • The <i>COI</i> haplotype diversity of the pelagic polychaete <i>Tomopteris</i> (Annelida: Tomopteridae) collected from the Pacific coast off Kii Peninsula, central Japan

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<p>The polychaete genus Tomopteris is an important component of the zooplankton and is also known for its communication using bioluminescence. However, there have been few studies about the species diversity and ecology of Tomopteris because of taxonomic and handling difficulties resulting from the fragility of their bodies. In this study, we performed DNA barcoding and species delimitation analysis to better understand the species diversity of Tomopteris using 17 specimens collected on a research cruise conducted off the eastern Kii Peninsula, Japan. Due to damage to the detailed morphological characteristics necessary for identifications based on the current taxonomy, none of the specimens was morphologically identifiable at the species level. The analyses of the mitochondrial cytochrome c oxidase subunit I (COI) and nuclear large ribosomal subunit (28S) RNA gene sequences revealed 7–8 molecularly delimited species among them, which was greater than the number of species currently recognized in Japan. These results suggest that the traditional morphology-based taxonomy overlooks the taxonomic complexity of Tomopteris, thus a combinatory analysis of both morphology and DNA barcoding will be desirable for assessing the true species biodiversity of Tomopteris.</p>

収録刊行物

  • Plankton and Benthos Research

    Plankton and Benthos Research 17 (2), 214-220, 2022-05-30

    日本プランクトン学会、日本ベントス学会

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