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    A re-analysis of the Kerguelen Shelf and Skiff Bank stocks of Champsocephalus gunnari

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    Document Number:
    WG-FSA-90/17
    Author(s):
    G. Duhamel (France) and D.J. Agnew (Secretariat)
    Approved By:
    Admin Admin (CCAMLR Secretariat)
    Accessibility Categories
    Open Access (OA)
    Review Finalised:
    No
    Agenda Item(s)
    WG-FSA-90 - - undefined
    Abstract

    Catches of Champsocephalus gunnari from the Kerguelen Shelf and Skiff Bank stocks were re-calculated from those used by the Working Group on Fish Stock Assessment in 1989 using length-frequency data for the years 1981 to 1990. Cohort analysis yielded a Stock Biomass of 22 711 tonnes in 1988 for the Age 2 Kerguelen Shelf stock, an order of magnitude lower than that calculated from a biomass survey in 1988 by the USSR. This biomass is consistent with that from previous cohorts and indicates a possible declining trend in the abundance of this stock.