Age and growth of Sebastes vulpes in the coastal waters of western Hokkaido, Japan

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Abstract

Age and growth of Sebastes vulpes collected from the coastal waters of western Hokkaido were studied. Observation of the otolith margin verified that annuli (outer margins of the opaque zone) were produced chiefly from July to August. This period was associated with parturition and the birth season. The maximum age estimated by the surface method was 12 years but the oldest fish was aged at 35 years by the cross-section method. The surface method was inadequate for aging of S. vulpes older than 6 years because of the underestimation of age. No significant difference was found in the parameters of the growth equations between both sexes. The von Bertalanffy growth curve combined for both sexes was as follows: SLt=358.6(1-exp^[-0.156(t+0.820)]), where SLt is standard length (mm) at age t (after parturition in years). It seems likely that S. vulpes grows slowly and lives longer than previously thought.

Age and growth of <i>Sebastes vulpes</i> collected from the coastal waters of western Hokkaido were studied. Observation of the otolith margin verified that annuli (outer margins of the opaque zone) were produced chiefly from July to August. This period was associated with parturition and the birth season. The maximum age estimated by the surface method was 12 years but the oldest fish was aged at 35 years by the cross-section method. The surface method was inadequate for aging of <i>S</i>. <i>vulpes</i> older than 6 years because of the underestimation of age. No significant difference was found in the parameters of the growth equations between both sexes. The von Bertalanffy growth curve combined for both sexes was as follows: <i>SL<sub>t</sub></i>=358.6(1-exp<sup>-0.156(<i>t</i>+0.820)</sup>), where <i>SL<sub>t</sub></i> is standard length (mm) at age <i>t</i> (after parturition in years). It seems likely that <i>S</i>. <i>vulpes</i> grows slowly and lives longer than previously thought.

Journal

  • Fisheries science

    Fisheries science 69(3), 575-580, 2003-06-01

    Japanese Society of Scientific Fisheries

References:  10

Cited by:  2

Codes

  • NII Article ID (NAID)
    10010710673
  • NII NACSIS-CAT ID (NCID)
    AA10993718
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09199268
  • NDL Article ID
    6570849
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z54-H592
  • Data Source
    CJP  CJPref  NDL  IR  J-STAGE 
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