Theoretical analysis of introgression between released fish and wild fish populations considering sex differences.

• KANAIWA MINORU

  Faculty of Bioresources, Mie University

• HARADA YASUSHI

  Faculty of Bioresources, Mie University

抄録

The genetic effects of hatchery release on natural populations were studied using simple mathematical models. We focused on the effect of sex differences in the number of released fish, the contribution to natural reproduction of released fish and/or in the fitness of released fish. A method for reducing introgression is discussed and we showed that the former two factors may reduce introgression, although the most effective bias for reduction depends on stocking density and fitness. We also showed that the dynamics can have multiple stable equilibria, which may result in irreversible introgression due to high stocking density in a single year.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 66 (4), 686-694, 2000

  公益社団法人 日本水産学会

キーワード

• introgression
• sex difference
• stocking
• theoretical analysis

詳細情報

• CRID: 1390282679405014784
• NII論文ID: 130003903479
• NII論文ID: 10004859428
• NII書誌ID: AA10993718
• DOI: 10.1046/j.1444-2906.2000.00109.x
• ISSN: 14442906
• ISSN: 09199268
• NDL書誌ID: 5501143
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5501143
• 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