Age,Growth and Maturity of the Bagrid Fish Pseudobagrus aurantiacus in the Chikugo River,Kyushu Island,Japan

• Takeshita Naohiko

  Department of Applied Aquabiology, National Fisheries University

• Araki Akira

  Department of Applied Aquabiology, National Fisheries University

• Mizoiri Shinji

  Faculty of Fisheries, Nagasaki University

• Tabeta Osame

  Faculty of Fisheries, Nagasaki University

• Kimura Seirô

書誌事項

タイトル別名

• Age, Growth and Maturity of the Bagrid Fish <i>Pseudobagrus aurantiacus</i> in the Chikugo River, Kyushu Island, Japan
• Age Growth and Maturity of the Bagrid F

抄録

Age, growth and maturity of the bagrid fish Pseudobagrus aurantiacus from the middle reaches of the Chikugo River, Kyushu Island, Japan were studied by examination of vertebral centrum and histological observations. Marginal increments of vertebral centrum formed annual rings from March to April. The growth of this fish was expressed by von Bertalanffy's equation as L_t=340.4[1-exp{-0.131(t+0.759)}] for males and L_t=266.8[1-exp{-0.146(t+0.920)}] for females, where L_t is standard length (SL) in mm and t is age in years. Males grow faster and live longer than females.<br> The spawning period of this population was considered to take place from July to August (mainly July). The minimum size at maturity was 77.6mm SL for males and 90.0mm SL for females. The age at which 50% of the fish reached maturity was 1-year-old for males and 2-year-old for females. The earlier maturity of males may be related to their faster growth.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 64 (1), 21-26, 1998

  公益社団法人 日本水産学会

キーワード

• age
• growth
• maturity
• Pseudobagrus aurantiacus
• Chikugo River

詳細情報

• CRID: 1390282679405345536
• NII論文ID: 130003742092
• NII論文ID: 10004872940
• NII書誌ID: AA10993718
• DOI: 10.2331/fishsci.64.21
• NDL書誌ID: 4406497
• ISSN: 09199268
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4406497
• Web Site: https://www.jstage.jst.go.jp/article/fishsci1994/64/1/64_1_21/_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