人工産卵場における粒径組成とイワナの産着卵の生残について

• 高橋 剛一郎

  富山県立大学

• 徳田 幸憲

  高原川漁業協同組合

• 中村 智幸

  独立行政法人水産総合研究センター増養殖研究所内水面研究部

書誌事項

タイトル別名

• On grain size distribution of artificial spawning grounds and survival of eggs of white-spotted charr （<i>Salvelinus</i><i> leucomaenis</i>）
• ジンコウ サンランジョウ ニ オケル リュウケイ ソセイ ト イワナ ノ ウブギラン ノ セイザン ニ ツイテ

抄録

Relationship of grain size distribution of artificial spawning grounds and survival of eggs of white-spotted charr (Salvelinus leucomaenis) was examined. Rates of very fine particles finer than 0.074 mm in three artificial spawning grounds were 0.8-1.4% by weight. The rates were much higher than those of stream beds in general mountain streams. It was feared that the extremely high rates of the very fine materials would prevent stream water with oxygen from reaching at laid eggs and cause low survival rate. The rate of eyed eggs was 90.0% for the laid eggs, and the rate was higher than those of other artificial spawning channels. Therefore, the high rates of very fine particles did not damage the eggs in this case. However, the results should not be generalized but a reference for the development of the artificial spawning ground technology.

収録刊行物

• Journal of the Japan Society of Erosion Control Engineering

  Journal of the Japan Society of Erosion Control Engineering 66 (3), 40-44, 2013

  公益社団法人 砂防学会

キーワード

• artificial spawning ground
• grain size
• survival
• laid egg
• white-spotted charr

詳細情報

• CRID: 1390282680456683904
• NII論文ID: 130005111346
• NII論文ID: 10031200133
• NII書誌ID: AN0012035X
• DOI: 10.11475/sabo.66.3_40
• ISSN: 21874654
• ISSN: 02868385
• NDL書誌ID: 024897387
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024897387
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可