29年間の禁漁期終了前後のサクラマスとブラウントラウトの生息個体数変化

  • 宮本 幸太
    (独)水産総合研究センター増養殖研究所内水面研究部
  • 高橋 昌也
    (独)水産庁増殖推進部
  • 平林 幸弘
    (独)水産総合研究センター北海道区水産研究所さけます資源部

書誌事項

タイトル別名
  • Changes in Number of Masu Salmon and Brown Trout before and after the Termination of a 29-year Closed Fishing Period
  • 29ネンカン ノ キンリョウキ シュウリョウ ゼンゴ ノ サクラマス ト ブラウントラウト ノ セイソク コタイスウ ヘンカ

この論文をさがす

抄録

We evaluated the effects of recreational fishing on masu salmon and brown trout in Chitose River, Hokkaido. The fish in the river, which had been closed for 29 years, were counted two years before the opening and soon after. We found that salmon ≥ 1+ in age decreased after the river was opened, but there was no significant difference in the number of trout the same age. In the study area, numerous anglers were observed. The results suggest that opening the river after it had been closed for a long time led to a disproportionate decrease in salmon.

収録刊行物

  • 水産増殖

    水産増殖 62 (2), 203-206, 2014

    日本水産増殖学会

詳細情報 詳細情報について

問題の指摘

ページトップへ