Data/hora: 09/06/2024 10:25:37

Provedor de dados: | 5
País: | France
Título: | Effect of minimum size regulations on east bluefin tuna (Thunnus thynnus L.) yield pe recruit
Autores: | Restrepo, Victor; Arrizabalaga, Haritz; Ortiz De Urbina, J M; Fromentin, Jean-marc.
Data: | 2006
Ano: | 2006
Palavras-chave: | Yield/recruit; Yield predictions; Size limit regulations; Bluefin tuna.
Resumo: | A standard yield per recruit (YPR) analysis is used to analyse the effects of minimum size regulations on bluefin tuna from the Eastern stock (East Atlantic and Mediterranean). Analyses were based on a selectivity vector computed over the period 1990- 1994 for which data were more reliable and VPA (performed during the 2002 stock assessment) showed a relatively good convergence. This selectivity vector was modified according to different minimum size regulations and implementation error levels. It is concluded that: (i) perfect implementation of the size limit regulation adopted in 2004 would increase YPR by 4.3% relative to the size limit adopted in 2002, and by 8.8% relative to the pattern realized in the early 1990s; (ii) YPR is however expected to decrease for some fleets, especially those targeting small BFT in the East Atlantic; and, (iii) an implementation error of 50% could cancel the gains expected due to the last size limit regulation adopted by the Commission.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00194/30545/28964.pdf
Editor: | ICCAT
Relação: | http://archimer.ifremer.fr/doc/00194/30545/
Formato: | application/pdf
Fonte: | Collective Volume of Scientific Papers (1021-5212) (ICCAT), 2006 , Vol. 59 , N. 3 , P. 794-801
Fonte: | ICCAT