東北地方太平洋沖から得られた日本初記録のヒレナガチョウチンアンコウ科魚類<i>Caulophryne polynema</i>フサフサヒレナガチョウチンアンコウ（新称）

DOI Web Site
  • 三澤 遼
    （国研）水産研究・教育機構水産資源研究所水産資源研究センター底魚資源部底魚第2グループ
  • 鈴木 勇人
    （国研）水産研究・教育機構水産資源研究所水産資源研究センター底魚資源部底魚第2グループ
  • 甲斐 嘉晃
    京都大学フィールド科学教育研究センター舞鶴水産実験所

書誌事項

タイトル別名
  • First Japanese record of <i>Caulophryne polynema</i> (Ceratioidei; Caulophrynidae) collected from off Iwate Prefecture, Pacific coast of northern Japan
  • 東北地方太平洋沖から得られた日本初記録のヒレナガチョウチンアンコウ科魚類Caulophryne polynemaフサフサヒレナガチョウチンアンコウ(新称)
  • トウホク チホウ タイヘイヨウオキ カラ エラレタ ニホン ハツ キロク ノ ヒレナガチョウチンアンコウカギョルイ Caulophryne polynema フサフサヒレナガチョウチンアンコウ(シンショウ)

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抄録

<p>The rarely collected ceratioid anglerfish family Caulophrynidae, including the genera Caulophryne Goode and Bean, 1896 and Robia Pietsch, 1979, is widely distributed from the surface to the bathypelagic zone in the Pacific, Atlantic and Indian oceans. Valid Caulophryne species, characterized by the absence of an expanded escal bulb, presence of only 2 pectoral radials, extremely long dorsal- and anal-fin rays, 8 caudal-fin rays, neuromasts of the acoustic-lateralis system located at the tips of elongate filaments, an illicial length less than 130% of standard length (SL), 14–22 dorsal-fin rays, and 12–19 anal-fin rays, include Caulophryne jordani Goode and Bean, 1896 and Caulophryne pelagica (Brauer, 1902) from all three oceans, Caulophryne polynema Regan, 1930 from the Atlantic and eastern Pacific, and Caulophryne bacescui Mihai-Bardan, 1982 from the eastern Pacific. A single female specimen of C. polynema, collected over a bottom depth of 658–663 m off Iwate Pref., Pacific coast of northern Japan, on 9 October 2020, was distinguished from other congeners by the following combination of characters: illicium length 17.3% SL, with about 50 translucent filaments along its entirety; 19 dorsal- and 17 anal-fin rays. In addition, a parasitic male with degenerated dorsal, anal and pectoral fins, and eyes was found on the specimen. The specimen represents the first record of Caulophryne polynema from the western North Pacific, including Japanese waters, and northernmost record of the species in the Pacific Ocean. The new standard Japanese name “Fusafusa-hirenaga-chochin-anko” is proposed for the species.</p>

収録刊行物

  • 魚類学雑誌

    魚類学雑誌 69 (2), 129-136, 2022-11-05

    一般社団法人 日本魚類学会

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