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    Preliminary results of pop-up satellite tag study on Antarctic toothfish in the Mawson Sea

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    Document Number:
    WG-FSA-16/08
    Author(s):
    Delegation of the Republic of Korea
    Submitted By:
    Dr Seok-Gwan Choi (Korea, Republic of)
    Approved By:
    Dr Seok-Gwan Choi (Korea, Republic of)
    Abstract

    Preliminary results of a pop-up satellite tag (PSAT) on large Antarctic toothfish are described in this report. The toothfish was caught in the Mawson Sea in Feb 2015 and released with a PSAT by a Korean scientific observer. The same observer recovered the fish a year later. The days of liberty were over a year (366 days). The vertical movement of the fish shows strong and contrasting patterns. The most significant pattern was the fish staying at the same depth for a couple months. The vigorous diel vertical movement period followed after. It occurred during winter to early spring that it may be indicating the possibility of a spawning behavior.