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    Long-distance movements of tagged Patagonian (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni)

    Request Meeting Document
    Document Number:
    WG-FSA-16/25 Rev. 1
    Author(s):
    CCAMLR Secretariat
    Submitted By:
    Ms Emily Grilly (CCAMLR Secretariat)
    Approved By:
    Mr Andrew Wright (CCAMLR Secretariat)
    Abstract

    At WG-SAM-16, the Working Group discussed the implications of toothfish moving long distances after the Chilean research survey for Dissostichus spp. in Subarea 48.2 recaptured one tagged fish in 2016 that had been released in Subarea 48.6 in 2011 (WG-SAM-16/20). The Working Group noted that to date the majority of tagged toothfish movements were very restricted in distance and requested that the Secretariat update its previous meta-analysis of the long distance movement of tagged fish throughout the CCAMLR area for consideration by the WG-FSA (WG-SAM-16, paragraphs 4.46 – 4.48). Analyses of toothfish movements have been recently conducted for release and recapture data within Subarea 48.3 (WG-FSA-14/49), within Subareas 88.1 and 88.2 (WG-FSA-15/37) as well as within Division 58.5.2 (WG-FSA-14/43). This paper analyses toothfish tag-recapture data (2006 – 2016) from across the whole Convention Area to assess long distance movements and behaviour by species, location and sex with a focus on movements between management areas.

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