三重県青蓮寺湖と滋賀県西の湖におけるオオクチバスの食性 Feeding Habits of Largemouth Bass Micropterus salmoides in Lakes Shorenji and Nishinoko, Central Japan

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Stomach contents of the largemouth bass collected from Lakes Shorenji (typical reservoir) and Nishinoko (typical swamp) were analyzed to determine its feeding habits and environmental adaptability. Main preys were a goby <i>Rhinogobius</i> sp(p). and shrimps <i>Macrobranchium nipponense</i> and <i>Palaemon paucidense</i> in Lake Shorenji, and a crayfish <i>Procambarus clarkii</i> and a shrimp <i>M. nipponense</i> in Lake Nishinoko. Fishes and crustaceans were the most important prey in Lakes Shorenji and Nishinoko, respectively. Principal preys changed ontogeneitically from the goby into bluegill <i>Lepomis macrochirus</i> and a cyprinid fish <i>Tribolodon hakonensis</i> in Lake Shorenji, and from a shrimp <i>M. nipponense</i> to the crayfish in Lake Nishinoko. The feeding activity was intense in summer and declined in winter. The bass may affect the ayu <i>Plecoglossus altivelis altivelis</i> population in both lakes. The bass has very flexible feeding habits, and this allows it to adapt easily to various feeding environments. The bass in Lake Nishinoko fed on larger amounts of prey organisms than that in Lake Shorenji. This fact may cause the higher growth rate of the bass in the former lake.

収録刊行物

  • 日本水産学会誌  

    日本水産学会誌 64(1), 26-38, 1998-01-15 

    日本水産學會

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各種コード

  • NII論文ID(NAID)
    10004852420
  • 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
    4381357
  • 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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