Data/hora: 01/06/2024 18:13:33

Provedor de dados: | 5
País: | France
Título: | Investigating the performances of a bayesian biomass dynamic model with informative priors on Atlantic bluefin tuna
Autores: | Simon, M; Fromentin, Jean-marc; Bonhommeau, Sylvain; Gaertner, Daniel; Etienne, Marie-pierre.
Data: | 2011
Ano: | 2011
Palavras-chave: | Bayesian model; Population growth rate; Uncertainties; Natural mortality; CPUE; Tuna fisheries; Thunnus thynnus.
Resumo: | We examined the possibility of eliciting informative priors for the parameters of a biomass production model with emphasis on the intrinsic population growth rate of Atlantic bluefin tuna (Thunnus thynnus). We reviewed the literature to propose probability distribution functions for the vital rates and used a matrix population model structured by age (Leslie) to compute the population growth rate. A generalized biomass production model is applied on two CPUE and catch datasets (1976-1996 and 1976-2006) using informative priors. The population growth rate prior has a diffuse distribution and is very sensitive to young of the year mortality rate. Thus, we compared the performances of this prior with a commonly used prior for tunas population growth rate. We noticed satisfactory predicted CPUE for both series and priors. Therefore, the choice of relevant prior distributions for the biomass production model seems debatable for tunas.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00192/30281/28756.pdf
Editor: | ICCAT
Relação: | http://archimer.ifremer.fr/doc/00192/30281/
Formato: | application/pdf
Fonte: | Collective Volume of Scientific Papers (1021-5212) (ICCAT), 2011 , Vol. 66 , N. 2 , P. 811-828
Fonte: | ICCAT