Morphological and molecular analyses of Blackfordia sp. (Hydrozoa: Leptothecata) newly discovered in Vietnam

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  • Iida Akane
    Graduate School of Bioscience, Tokai University
  • Lindsay Dhugal J.
    X-STAR Institute, Japan Agency for Marine-Earth Science and Technology
  • Ha Tran Manh
    Institute of Marine Environment and Resources, Vietnam Academy of Science and Technology
  • Thu Pham The
    Institute of Marine Environment and Resources, Vietnam Academy of Science and Technology
  • Hidaka Mitsuko
    X-STAR Institute, Japan Agency for Marine-Earth Science and Technology
  • Toshino Sho
    Kuroshio Biological Research Foundation
  • Kondo Yusuke
    Takehara Station, Setouchi Field Science Center, Graduate School of Integrated Sciences for Life, Hiroshima University
  • Ohtsuka Susumu
    Takehara Station, Setouchi Field Science Center, Graduate School of Integrated Sciences for Life, Hiroshima University
  • Nishikawa Jun
    Graduate School of Bioscience, Tokai University

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タイトル別名
  • Morphological and molecular analyses of <i>Blackfordia</i> sp. (Hydrozoa: Leptothecata) newly discovered in Vietnam

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説明

<p>Hydrozoan jellyfish of the genus Blackfordia currently consist of three described species: B. manhattensis, B. virginica and B. polytentaculata. These species are distinguished by combinations of the position and shape of the gonads, the number of marginal tentacles, and the presence or absence of black pigments on the bell rim. We discovered a species of the genus Blackfordia in Vietnam for the first time. Morphological and molecular analyses revealed that this Vietnamese Blackfordia had an intermediate number of tentacles compared with its congeners, and a similar number of tentacles had been reported in Blackfordia only in Brazil, Mexico and India. Mitochondrial DNA analysis indicated that Vietnamese Blackfordia formed a sub-clade with “B. virginica” from Brazil, and differed from B. virginica from other locations, having a K2P distance of >0.13. These results suggest that Blackfordia sp. found in Vietnam (and Brazil) may be a different species from B. virginica found elsewhere, though more information is needed to establish this new species.</p>

収録刊行物

  • Plankton and Benthos Research

    Plankton and Benthos Research 16 (2), 118-128, 2021-05-27

    日本プランクトン学会、日本ベントス学会

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