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    Results from a three-year survey, 2017–2019, into the connectivity of toothfish species in Subareas 48.2 and 48.4

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    Numéro du document:
    WG-FSA-2021/22
    Auteur(s):
    M. Söffker, O. Hogg, P. Hollyman, M. Belchier, A. Riley, L. Readdy, E. MacLeod, G. Robson, K. Olsson, H. Pontalier and C. Darby
    Soumis par:
    Timothy Earl (Royaume-Uni)
    Approuvé par:
    Chris Darby (Royaume-Uni)
    Point(s) de l'ordre du jour
    Résumé

    This paper presents the results from a three-year longline fishing research survey (2017 - 2019), conducted to improve understanding of Dissostichus spp. population connectivity, biological characteristics and spatial structure across CCAMLR Subareas 48.2 and 48.4. The results provide evidence linking D. mawsoni with the Antarctic continental shelf and indicate a potential D. mawsoni spawning region in Subarea 48.2. The movements of recaptured tagged fish indicate potential connections with the Lazarev Sea (Subarea 48.6) as well as the southern South Sandwich Islands. The results contribute to the information available for further refinement of the D. mawsoni stock hypothesis.

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