Age and Growth of Pointhead Flounder Hippoglossoides pinetorum in Ishikari Bay, Hokkaido

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Pointhead flounder, Hippoglossides pinetorum, taken by commercial gillnets and an experimental beam trawl net in Ishikari Bay, Hokkaido from September 1991 to July 1993 were aged using polished otoliths (saggitae). Ages were validated by the monthly change in the percentage of otolith with translucent edge and marginal increments; a single opaque and translucent zone was formed annually. The regression method and Lee (Fraser-Lee)'s method were used to estimate the back-calculated length. Growth of pointhead flounder was expressed as Lt=251.9(1-exp^[-0.261(t-0.142)]) for males and Lt=315.1(1-exp^[-0.219(t-0.200)]) for females using back-calculated lengths by the regression method and Lt=251.6(1-exp^[-0.263(t-0.142)]) for males and Lt=333.0(1-exp^[-0.204(t-0.186)]) for females using back-calculated lengths by Lee's method, where Lt is the standard length (mm) at estimated age t. Small differences in the theoretical lengths of older female fish were found between the two methods. However, the theoretical standard lengths predicted by the two methods were very similar at most estimated ages and indicated the approximate actual length at each age.

収録刊行物

  • Fisheries science : FS  

    Fisheries science : FS 62(2), 215-221, 1996 

    Japanese Society of Fisheries Science

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各種コード

  • NII論文ID(NAID)
    10004865453
  • NII書誌ID(NCID)
    AA10993718
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09199268
  • NDL 記事登録ID
    3951193
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z54-H592
  • データ提供元
    CJP書誌  CJP引用  NDL  IR 
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