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Quantifying the impact on estimates of recruitment trends of previously unreported catches of age-0 bluefin tuna in the Meditteranean

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posted on 01.04.2021, 10:49 by Tom Carruthers, Doug ButterworthDoug Butterworth
We update the 2017 SCRS-agreed VPA assessment for the Eastern Atlantic bluefin tuna to include previously unreported catches of age-0 tuna in the Mediterranean. Except for three years in the 1980s, the change in estimates of annual recruitment are negligible. The pattern that indicates a regime shift in the 1980s remains. We consequently propose no related change in the current specifications for the Reference Set of Operating Models for the Atlantic bluefin MSE.

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Department of Mathematics and Applied Mathematics, University of Cape Town