北海道噴火湾におけるヒレグロの年齢と成長  [in Japanese] Age and Growth of Korean Flounder Glyptocephalus stelleri in Funka Bay, Hokkaido  [in Japanese]

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Abstract

ヒレグロの資源維持および増強を目的に,2006年4月~2007年3月に北海道噴火湾から採集した個体の耳石による年齢査定を行い,漁獲時の年齢-体長データに基づいて成長解析を行った。耳石の不透明帯外縁は主に8~9月に形成される年周輪であり,この時期は孵化盛期とほぼ一致した。<I>t</I>(歳)時の体長を<I>SL<SUB>t</SUB></I>(mm)とすると,成長式は雌で<I>SL<SUB>t</SUB></I> = 393.1 [1-exp {-0.145 (<I>t</I>+0.081)}],雄で<I>SL<SUB>t</SUB></I> = 393.1 [1-exp {-0.134 (<I>t</I>+0.088)}]と表された。噴火湾のヒレグロは山陰沖に比べて1歳時以降の成長速度が速く,この地域差には餌利用可能度が関与している可能性が考えられた。

For maintaining and increasing in natural stock of Korean flounder <I>Glyptocephalus stelleri</I> their ages and growth in Funka Bay, Hokkaido were studied on the basis of samples caught by an otter trawl net and commercial gill nets. Observation of the otolith margin verified that annuli, outer margins of the opaque zone, were mainly produced between August and September during the birth period. Growth in both sexes was expressed by the von Bertalanffy asymptotic growth functions as <I>SL<SUB>t</SUB></I> = 393.1 [1-exp {-0.145 (<I>t</I>+0.081)}] for females and <I>SL<SUB>t</SUB></I> = 393.1 [1-exp {-0.134 (<I>t</I>+0.088)}] for males, where <I>SL<SUB>t</SUB></I> is standard length in mm and <I>t</I> is age in years. The growth rates of 1 year old and later in Funka Bay are higher than those in Japan Sea off San-in with this disparity considered to be related to food availability.

Journal

  • Aquaculture Science

    Aquaculture Science 58(1), 11-16, 2010-03-20

    Japanese Society for Aquaculture Science

References:  17

Cited by:  1

Codes

  • NII Article ID (NAID)
    10029845632
  • NII NACSIS-CAT ID (NCID)
    AN00124667
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03714217
  • NDL Article ID
    10627277
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-761
  • Data Source
    CJP  CJPref  NDL  J-STAGE  JASI 
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