Determination of Lmax for Atlantic Bluefin Tuna, Thunnus thynnus (L.), from Meta-Analysis of Published and Available Biometric Data

A meta-analysis of the straight fork lengths (herewith abbreviated as L) of 2,458,028 Atlantic bluefin tuna, Thunnus thynnus (L.), taken from 224 scientific publications and unpublished L data from scientific organizations and fishing companies spanning most of the known Atlantic and Mediterranean A...

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Detalhes bibliográficos
Autores: Cort, José Luis, Deguara, Simeon, Galaz, T., Mèlich, B., Artetxe, I., Arregi, I., Neilson, J.D., Andrushchenko, Irene, Hanke, Alex, Santos, Miguel Neves, Estruch, V., Lutcavage, V., Knapp, J., Compeán-Jiménez, G., Solana-Sansores, R., Belmonte, A., Martínez, D., Piccinetti, C., Kimoto, A., Addis, Piero, Velasco, Eva María, Serna-Ernst, José Miguel de-la, Godoy-Garrido, María Dolores, Ceyhan, T., Oray, I.K., Karakulak, F.S., Nøttestad, Leif, López, A., Ribalta, O., Abid, Noureddine, Idrissi, M.
Formato: artículo
Fecha de publicación:2013
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/326748
Acesso em linha:http://hdl.handle.net/10261/326748
Access Level:acceso abierto
Palavra-chave:Pesquerías
Centro Oceanográfico de Santander
Descrição
Resumo:A meta-analysis of the straight fork lengths (herewith abbreviated as L) of 2,458,028 Atlantic bluefin tuna, Thunnus thynnus (L.), taken from 224 scientific publications and unpublished L data from scientific organizations and fishing companies spanning most of the known Atlantic and Mediterranean Atlantic bluefin tuna fisheries dating from 1605 to 2011, give L values ranging from L min = 20 cm and L max = 330 cm. The results indicate that the parameter L ∞ = 318.85 cm of the growth equation used by ICCAT's Standing Committee on Research and Statistics Atlantic bluefin tuna assessment group for the eastern stock (Lt = 318.85 [1 – e−0.093 (t + 0.97)]) lies within the confidence limits of the maximum Ls presented in the study: L max = 319.93 ± 11.3 cm, confirming that this equation perfectly fits the biology of the growth of this species. These conclusions are also valid for the equation for the western stock (Lt = 314.90 [1 – e−0.089 (t +1.13)]). The ICCAT Atlantic bluefin tuna database contains numerous records of Atlantic bluefin tuna L outside the biological feasibility, and solutions are provided to recognize and remove these outliers based on the application of fixed values of Fulton's condition factor (K) between 1.4 and 2.6 and appropriate L-W relationships to correct this situation in the future.

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