長崎と大分の市場に水揚げされたアカアマダイとキアマダイの交雑個体  [in Japanese] Natural hybrids of Branchiostegus japonicus and B. auratus landed at Nagasaki and Oita fish market  [in Japanese]

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Author(s)

    • 山下 秀幸 YAMASHITA HIDEYUKI
    • (独)水産総合研究センター開発調査センター Marine Fisheries Research and Development Center (JAMARC), Fisheries Research Agency
    • 酒井 猛 [他] SAKAI TAKESHI
    • (独)水産総合研究センター西海区水産研究所 Seikai National Fisheries Research Institute, Fisheries Research Agency
    • 矢野 綾子 YANO AYAKO
    • 東京海洋大学 Faculty of Marine Science and Technology, Tokyo University of Marine Science and Technology
    • 東海 正 TOKAI TADASHI
    • 東京海洋大学 Faculty of Marine Science and Technology, Tokyo University of Marine Science and Technology

Abstract

アカアマダイやキアマダイの水揚げ地である長崎と大分で,これら既知 2 種の色彩的特徴を併せ持つ種不明の 2 個体を採集した。これらを,既知 2 種と比較し,交雑である可能性について検討した。計数形質はアカアマダイとキアマダイで明確な違いはなく,2 個体の形質でも両種の範囲内であった。計測形質による主成分分析および判別分析の結果,これら 2 個体は既知 2 種のほぼ中間に位置した。DNA 分析の結果,これら 2 個体はそれぞれアカアマダイとキアマダイの両方に類似した遺伝子型を有しており,両種の交雑個体であると推定された。<br>

  Two possible hybrid specimens, one from Oita fish market and the other from Nagasaki fish market, were obtained. The specimens had the characteristics of both red tilefish <i>Branchiostegus japonicus</i> (a silvery white triangular marking from the posterior orbital to the mid preoperculum) and yellow tilefish <i>Branchiostegus auratus</i> (a silvery white band from the suborbital to the upper jaw, small yellow spots on the surface of the caudal fin). In the present study, the possible hybrid specimens were evaluated in comparison with <i>B. japonicus</i> and <i>B. auratus</i>. Numerical characters of the specimens were within the range of overlapping of <i>B. japonicus</i> and <i>B. auratus</i>. By employing discriminant analysis and principal component analysis based on the morphometric indices, the results revealed that the specimens showed intermediate characteristics of morphometrics between the two species. It is confirmed that the two samples carry the genes associated with both <i>B. japonicus</i> and <i>B. auratus</i> based on nuclear DNA analyses. In conclusion, the two specimens were considered as natural hybrids among <i>B. japonicus</i> and <i>B. auratus</i>.<br>

Journal

  • NIPPON SUISAN GAKKAISHI

    NIPPON SUISAN GAKKAISHI 79(5), 804-812, 2013-09-15

    The Japanese Society of Fisheries Science

References:  33

Codes

  • NII Article ID (NAID)
    10031185898
  • NII NACSIS-CAT ID (NCID)
    AN00193422
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    00215392
  • NDL Article ID
    024906264
  • NDL Call No.
    Z18-345
  • Data Source
    CJP  NDL  J-STAGE  JASI 
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