Section 23
Chapter 22,580

Estimation of northeast Atlantic bluefin tuna (Thunnus thynnus) growth parameters from tagging data

Rodriguez-Cabello, C.; Restrepo, V.R.; Rodriguez-Marin, E.; Cort, J.L.is de la Serna, J.M.guel

International Commission for the Conservation of Atlantic Tunas Collective Volume of Scientific Papers 60: 1258-1264


Accession: 022579222

Tag-recapture data of bluefin tuna (Thunnus thynnus) recorded from 1977 to 2001 in the Bay of Biscay (North of Spain) have been analysed to estimate the von Bertalanffy growth parameters of this species. Growth models incorporating individual variability in growth among individuals and model error have been applied. The results provided were L infinity =281.9 cm and K=0.10. A bootstrap of the data resulted in large standard errors for these parameter estimates. The estimates currently adopted for the stock fell within the bootstrap ranges. It is concluded that these data could contribute useful information to future studies on growth for the stock.

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