山梨県西湖及び精進湖における近年の魚類相の変化と国内外来魚の侵入 Changes of fish fauna and invasion of non-indigenous Japanese fishes in recent years in Lake Saiko and Shojiko, Yamanashi Prefecture

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著者

    • 土井 真樹絵 Doi Makie
    • 東京農工大学大学院農学部 Graduate School of Agriculture, Tokyo University of Agriculture and Technology
    • 大平 充 [他] Ohira Mitsuru
    • 東京農工大学大学院連合農学研究科 United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
    • 満尾 世志人 Mitsuo Yoshito
    • 東京農工大学農学部|現所属:日本学術振興会/龍谷大学理工学部環境ソリューション工学科 Faculty of Agriculture, Tokyo University of Agriculture and Technology|Present office: JSPS/Faculty of Science and Technology, Ryukoku University
    • 千賀 裕太郎 Senga Yutaro
    • 東京農工大学大学院農学研究院 Institute of Agricultural Science, Tokyo University of Agriculture and Technology

抄録

We investigated fish fauna in the littoral areas of Lake Saiko and Shojiko, Yamanashi Prefecture, Central Japan and compared them with those in previous studies. Two species have newly appeared in each lake: <i>Oncorhynchus masou masou</i> (Salmonidae) and <i>Pseudogobio esocinus esocinus</i> (Cyprinidae) in Lake Saiko and two Gobiidae species, <i>Tridentiger brevispinis</i> and <i>Gymnogobius urotaenia</i>, in Lake Shojiko. Three of these fishes are non-indigenous Japanese fishes and may have been introduced unintentionally in recent years, whereas <i>O. masou masou</i> was stocked for fishing by fishery managers of Lake Saiko. In Lake Saiko, the fish species composition has greatly changed and a goby, <i>Rhinogobius</i> sp. OR, has been dominated by another goby, <i>T. brevispinis</i>, during the past decade. In Lake Shojiko, species composition and dominant species has not changed and a goby, <i>R.</i> sp. OR, was the dominant benthic fish in littoral areas. However, we found that <i>T. brevispinis</i> has also invaded Lake Shojiko recently and greatly increased in number during the study period. The results indicated that unintentional introduction of non-indigenous fish species may have frequently occurred with fish stocking in recent years.

収録刊行物

  • 野生生物保護

    野生生物保護 13(2), 59-66, 2012

    「野生生物と社会」学会

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各種コード

  • NII論文ID(NAID)
    110009470658
  • NII書誌ID(NCID)
    AA11473258
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    1341-8777
  • NDL 記事登録ID
    023863832
  • NDL 請求記号
    Z18-B387
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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