Data/hora: 17/06/2024 07:48:18

Provedor de dados: | 5
País: | France
Título: | Estimating the productivity of Atlantic bluefin tuna from validated scientific data
Autores: | Fromentin, Jean-marc; Bonhommeau, Sylvain; Kell, Laurence; Restrepo, Victor.
Data: | 2010
Ano: | 2010
Palavras-chave: | Thunnus thynnus; Population growth rate; Fecundity; Maturity; CITES criteria.
Resumo: | Estimating the productivity of an exploited marine species is not an easy or a trivial task. In the case of Atlantic bluefin tuna, the productivity can hardly be estimated from the natural mortality rates or the stock recruitment relationships because the former have never been estimated for this species from scientific data, but only “guesstimated”, while the latter remain highly uncertain for both the eastern stock (BFTE) and the western stock (BFTW). To get a better idea of bluefin tuna productivity, we thus applied the approach by Jennings et al. (1998) who proposed a surrogate of r, r’, named the potential rate of population increase. We compared this parameter and age-at-maturity (and to some extent the individual growth curves) of 25 species displaying contrasting life history traits. The results indicate that the potential rate of population increase of BFTW is significantly lower than this of BFTE. BFTW productivity displays a rather low productivity while BFTE productivity is at a medium level.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00192/30293/28777.pdf
Editor: | ICCAT
Relação: | http://archimer.ifremer.fr/doc/00192/30293/
Formato: | application/pdf
Fonte: | Collective Volume of Scientific Papers (1021-5212) (ICCAT), 2010 , Vol. 65 , N. 3 , P. 1052-1057
Fonte: | ICCAT