First Records of the Brooding Astropectinid Starfish Trophodiscus almus (Echinodermata : Asteroidea) from Japan, with Reference to Its Zoogeographical Significance First Records of the Brooding Astropectinid Starfish Trophodiscus almus (Echinodermata : Asteroidea) from Japan, with Reference to Its Zoogeographical Significance

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抄録

An astropectinid starfish with a unique habit of brooding, Trophodiscus almus Fisher, 1917, has been previously reported to be endemic to the northern part of the Sea of Okhotsk. Recently 11 specimens of this species were obtained from the northern Sea of Japan at depths of 290-295 m off Ajigasawa in Aomori Prefecture, far to the south of the Sea of Okhotsk, and 18 specimens from off Kushiro, Hokkaido, in the Pacific Ocean at depths of 153-252 m. These occurrences of T. almus represent the first records from Japanese waters, and the Sea of Japan is a new southern range limit. A detailed redescription of the species is provided along with color photographs and scanning electron micrographs. The distribution patterns of starfishes known from the Sea of Okhotsk are reviewed in relation to the zoogeographical significance of T. almus.

収録刊行物

  • Species Diversity

    Species Diversity 7(2), 187-203, 2002

    日本動物分類学会

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各種コード

  • NII論文ID(NAID)
    110002344112
  • NII書誌ID(NCID)
    AA11114903
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    1342-1670
  • NDL 記事登録ID
    6181343
  • NDL 雑誌分類
    ZR4(科学技術--生物学--動物)
  • NDL 請求記号
    Z53-W570
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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