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    Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) (2013-14 season) from Division 58.4.1 by Spain

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    Document Number:
    WG-FSA-16/58
    Author(s):
    L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
    Submitted By:
    Mr Roberto Sarralde Vizuete (Spain)
    Approved By:
    Ms Doro Forck (CCAMLR Secretariat)
    Agenda Item(s)
    WG-FSA-16 - 4.2.4 - Dissostichus spp. Division 58.4.1
    Abstract

    We present preliminary results on age and growth of Dissostichus mawsoni for the second season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth parameters obtained using length-age pair values are: L∞: 175.7, k: 0.1078 and t0: 1.528 for females; L∞: 150.3, k: 0.1491 and t0: 1.809 for males; and L∞: 169.8, k: 0.1087 and t0: 1.168 all combined. These results are very similar to those reported previously for the first season (2012/13) although they differ slightly with the values used in the Ross sea assessment for males.