日本の主要な漁港におけるサメ類の種別水揚げ量の推定  [in Japanese] Estimation of the amount of shark landing by species in the main fishing ports of Japan  [in Japanese]

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Author(s)

Abstract

日本におけるサメ類の種別・漁法別水揚量を明らかにする目的で,主要な漁港で市場伝票整理に基づくサメ類の水揚量調査を行なった。製品重量では1992-98年の漁法全体で年平均19,600卜ン,延縄で15,000卜ンの内,ヨシキリザメが11,600トン(59%),11,000卜ン(73%)であった。更に生体重量に換算した結果,全漁法で年平均28,700卜ン,延縄23,400トンとなり,同様にヨシキリザメが18,800卜ン(66%),17,800卜ン(76%)であり,何れの場合も6~8割程度がヨシキリザメで占められていた。ヨシキリザメ以外ではネズミザメ,アオザメが10%前後,オナガザメ類が5%程度と,比較的多く水揚されていた。また,これら主要種の水揚量が減少しているような傾向は見られなかった。

To clarity the amount of shark landing by both species and fishing methods in Japan, an investigation on shark landing at the main fishing ports was conducted. The annual average weight of landing in the product form for all shark species and blue shark by all fishing methods from 1992 to 1998 were estimated to be 19, 600 and 11, 600 tons respectively. Those by the longline were estimated to be 15, 000 and 11, 000 tons respectively. These weights became 28, 700, 18, 800, 23, 100 and 17, 800 tons after conversion to whole body weight. In all cases, the landing of the blue shark was dominant and occupied 61-79%. Excluding the blue shark, salmon shark, shortfin mako and thresher sharks were landed in relatively large amounts and occupied about 10, 10 and 5% respectively. A declining tendency in the amount of landing for those main species was not observed.

Journal

  • NIPPON SUISAN GAKKAISHI

    NIPPON SUISAN GAKKAISHI 69(2), 178-184, 2003-03-15

    The Japanese Society of Fisheries Science

References:  15

Cited by:  1

Codes

  • NII Article ID (NAID)
    110003160691
  • NII NACSIS-CAT ID (NCID)
    AN00193422
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    00215392
  • NDL Article ID
    6523682
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-345
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE  NDL-Digital 
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