千曲川におけるＤｅＬｕｒｙ法によるアユの資源尾数推定

• 山本 聡

• 松宮 義晴

書誌事項

タイトル別名

• Estimation of the Population Size in Number of Ayu, Plecoglossus altivelis altivelis, by the DeLury's Method in the Chikuma River.
• チクマガワ ニ オケル DeLuryホウ ニ ヨル アユ ノ シゲン ビスウ スイテイ

抄録

The initial population number of ayu fish at the beginning of the fishing season and catchability coefficient estimated using DeLury's method and the stocking effect was examined in the Chikuma River. The accumulative catch and the CPUE of the Tomozuri angling fishery observed by hourly sighting were used for estimation. Since the number of the released fingerlings was known, the survival rates until the beginning of the fishing season were calculated to be 13.0% in 1997 and 36.9% in 1998. The results showed that DeLury's method was applicable to the assessment of the ayu population.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 67 (1), 30-34, 2001

  公益社団法人 日本水産学会

キーワード

• アユ
• デルーリー法
• 資源量推定
• 放流効果
• 生残率
• 千曲川

詳細情報

• CRID: 1390282681387692800
• NII論文ID: 110003145199
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.67.30
• ISSN: 1349998X
• ISSN: 00215392
• NDL書誌ID: 5706000
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030621619
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5706000
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/11075565
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可