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    Preliminary assessment of mackerel icefish, Champsocephalus gunnari, in Subarea 48.3 using a length based population dynamics modelv

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    Document Number:
    WG-FSA-11/30 Rev. 1
    R.E. Mitchell and S.M. Martin (United Kingdom)

    A length-based projection model is used to estimate catch limits for the 2011/12 fishing season for Champsocephalus gunnari in CCAMLR sub area 48.3. The model is initialised using estimated numbers at length derived from survey length density and biomass density data, removing the need for cohort identification associated with age based projection models used historically. Application of the harvest control rule ensuring 75% escapement after a two year projection period yielded a total allowable catch of 3,072 tonnes for 2011/12 and 2,933 tonnes for 2012/13.