Consulta: subjectFacets:"Mortalité par pêche"
Registros recuperados: 2
Data/hora: 08/06/2024 14:04:48

Comparison of methods for stock assessment of European hake Merluccius merluccius in the Gulf of Lions (Northwestern mediterranean)
Provedor de dados: 5
Autores: Aldebert, Yvonne; Recasens, Laura.
European hake Merluccius merluccius is the main commercial demersal species in the Gulf of Lions (Northwestern Mediterranean). This fish is exploited by French and Spanish trawler fleets and by small-scale fisheries using gillnets and longlines. Data on landings and the demography of catches by type of gear are now available for the period 1988-1991. The assessment of the hake stock was carried out using methods of virtual population analysis (VPA), or cohort analysis, based respectively on mean pseudocohorts and cohorts by age. The results of these VPA were then analysed and compared from a methodological point of view. The general results have confirmed previous studies with regard to the level of exploitation of the species. The two methods gave quite...
Tipo: Text
Palavras-chave: Merluccius merluccius; Méditerranée; Méthodologie; Évaluation des stocks; Démographie des captures; Mortalité par pêche; Merluccius merluccius; Mediterranean Sea; Methodology; Stock assessment; Population structure; Fishing mortality.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00188/29886/28341.pdf

Les pêcheries françaises du chalutage à bar : analyse de séries temporelles 1999-2007
Provedor de dados: 5
Autores: Morizur, Yvon; Meunier, M; Huet, Jerome; Martin, S.
A displacement of the fishing effort of the French pelagic trawlers from anchovy to the seabass fisheries is observed. A such situation on a non-quota managed species requires to analyse carefully the evolution in the status of seabass stocks. The evolution of fishing effort, the production and the landings per unit of effort were studied from 2000 to 2007 for the bottom trawling and for the pair pelagic trawling in the ICES sub-areas VIII and VII. The fishing effort was assessed by using a threshold on the landings by month in order to select the most effective fishing effort as representing 75 % of the effort concerned with seabass landings. Length compositions and age-length keys were used to calculate the cpue-at-age series. A total mortality value was...
Tipo: Text
Palavras-chave: Fishing mortality; Recruitment; Abundance index; Fishing effort; Trawling; Seabass; Dicentrarchus labrax; Mortalité par pêche; Recrutement; Indice d'abondance; Effort de pêche; Chalutage; Bar commun; Dicentrarchus labrax.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/rapport-7303.pdf