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    ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CATCH AND CPUE DATA

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    Document Number:
    WG-FSA-09/14 Rev. 1
    Author(s):
    D. Vasilyev, K. Shust, A. Petrov, V. Tatarnikov and I. Istomin (Russia)
    Agenda Item(s)
    WG-FSA-09 - 5.2 - Development of methods to assess exploratory fisheries
    Abstract

    An attempt to use reported catch and CPUE data based on data of observers in the assessment of Antarctic toothfish stock in Division 58.4.1 is made. Unlike some previous results obtained for this division (e.g. Agnew et al., 2008), the assessment was intended to be independent of estimates of toothfish stock biomass in the Ross Sea. As a result of implementation of an age-structured and a dynamic production models, current stock biomass in this division is estimated as about 12000 t, while the estimate of carrying capacity for this stock is found to be about 29000 t. Initial stock biomass is estimated as 19000 t.