集魚灯下で釣獲されたアカイカの網膜順応状態 Retinal Adaptation of Neon Flyig Squid Ommastrephes bartrami at Capture with Jigs and Fishing Lights

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To investigate the mechanism of attracting large-sized neon flying squid (>30cm mantle length), <i>Ommastrephes bartrami</i>, to fishing lights, experimental hand and machine jigging with fishing lights were carried out in the North Pacific Ocean. The eyes of captured squid were examined histologically for retinal adaptation. Squid were caught at different depths (20, 50, 100, 150, 200m) using onboard fishing lights at night and in the daytime with underwater fishing lights placed 180m deep. Their retinae were all dark-adapted when captured during the daytime and at night. Since squid were caught at nighttime at greater than 100m depths using jigs with 300kW fishing lights, it is supposed that the powerful fishing lights have deepened the distribution of squid whereas driftnets captured squid at depths of 7-10m when set at night.

収録刊行物

  • 日本水産学会誌  

    日本水産学会誌 63(6), 899-904, 1997-11-15 

    日本水産學會

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各種コード

  • NII論文ID(NAID)
    10004852115
  • NII書誌ID(NCID)
    AN00193422
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00215392
  • NDL 記事登録ID
    4335224
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z18-345
  • データ提供元
    CJP書誌  CJP引用  NDL  IR  J-STAGE 
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