Relation of Recruitment to the Number of Caught Juveniles in the Ayu Population of Lake Biwa

• Suzuki Naoki

  Department of Fisheries Resource Management, Tokyo University of Fisheries

• Kitahara Takeru

  Department of Fisheries Resource Management, Tokyo University of Fisheries

書誌事項

タイトル別名

• Relation of Recruitment to the Number o

抄録

The purpose of this study was to find a method of predicting the recruitment size of the ayu Plecoglossus altivelis population, using the data obtained in certain surveys before the main fishing season. In the ayu population of Lake Biwa it is known that the survival rate in the early life history depends on the population density. Adopting the population size at the beginning of February as therecruitment size, we theoretically derived a general relationship between the recruitment size and the mean number of juveniles caught by a net survey in December. We then calculated the recruitment size that satisfied the derived relation as closely as possible, using a cohort analysis. We found that the obtained relation can give a practical estimate of the recruitment size from the mean numberof juveniles caught in December.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 62 (1), 15-20, 1996

  公益社団法人 日本水産学会

キーワード

• ayu
• Lake Biwa
• recruitment
• density effect

詳細情報

• CRID: 1390001204429494912
• NII論文ID: 130003902839
• NII論文ID: 10004864641
• NII書誌ID: AA10993718
• DOI: 10.2331/fishsci.62.15
• NDL書誌ID: 3929038
• ISSN: 09199268
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3929038
• Web Site: https://www.jstage.jst.go.jp/article/fishsci1994/62/1/62_1_15/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可