Mark-recapture inputs to the 2017 Ross Sea region stock assessment (Subarea 88.1 and SSRUs 88.2A–B)

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Numéro du document:

WG-FSA-17/36

Auteur(s):

S. Parker and S. Mormede

Soumis par:

Alistair Dunn (Nouvelle-Zélande)

Approuvé par:

Alistair Dunn (Nouvelle-Zélande)

Point(s) de l'ordre du jour

WG-FSA-17 - 3.2.6 - D. mawsoni in Subarea 88.1

Résumé

We provide a summary of the mark-recapture data inputs to the 2017 Ross Sea region stock assessment.

A total of 44 827 Antarctic toothfish have been released and 2473 recaptured, and 1 191 Patagonian toothfish released and 103 recaptured since 2001. Effective tagging survival and tag detection rates for each vessel were calculated. In the last few years the effective tagging survival is estimated at about 65% and the effective tag detection rate at about 85%.