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    Preliminary stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6)

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    Número de documento:
    WG-FSA-13/05
    Autor(es):
    R. Sinegre and G. Duhamel (France)
    Presentado por:
    Sarah Mackey (Secretaría de la CCRVMA)
    Resumen

    A preliminary assessment is undertaken to increase the knowledge of the Patagonian toothfish (Dissostichus eleginoides) stock in Crozet area. This study is based on a CASAL (C++ Algorithmic Stock Assessment Laboratory) model. Different statistical and biological datasets are used: catches, tag releases/recaptures data, commercial catch-at-length data and Killer whales impact. Preliminary results show different estimates for the initial and current biomass. A range of 55000 to 115000 tons is observed for B0 estimates and SSB never fall below 70% of the initial biomass considering the actual level of catches.