Data/hora: 11/06/2024 08:47:32

Provedor de dados: | 5
País: | France
Título: | Analyse des captures accidentelles de mammifères marins dans les pêcheries françaises aux filets fixes
Autores: | Morizur, Yvon; Gaudou, Olivier; Demaneche, Sebastien.
Data: | 2014-08
Ano: | 2014
Palavras-chave: | France; Bycatch; Marine mammals; Phocoena phocoena; Set nets; Trammel nets; Gill nets; EU regulation 812/2004.
Resumo: | During the years 2008 to 2013 several observations of catches were planned on board of set netters fishing in the bay of Biscay, in the English Channel, in the North sea and in the Mediterranean area (around Corsica). All the observations were done on nets without pingers and they were pooled to provide an average bycatch rate of marine mammals by fleet. Estimates of annual bycatch by using the fishing efforts of the year 2012 were provided by fleet. Harbour porpoise Phocoena phocoena was the most common bycatch in set nets. An average annual estimate of 600 harbour porpoises was obtained for the French fleet; other species recorded in set nets were mainly common dolphin Delphinus delphis, striped dolphin Stenella coeruleoalba and the two species of seals (Phoca vitulina, Halichoerus grypus); 80 % of the porpoise bycatch occurred in the trammel net fisheries for monkfish and for sole. Gill nets in area VIII were also responsible of 20 % of the bycatch. No bycatch was observed in set nets in the Mediterranean sea. Most of the porpoise bycatch occurred in the range of 80-110 meters depth. Some fishing métiers in the area concerned with the regulation on pingers as gill nets for spider crab were found with no bycatch of porpoises. Bycatch occurred on the eastern and western ends of the English Channel but did not occur in the middle of the Channel. Bycatch rates were calculated by fishing operation and the study describes their variability. Incidental porpoise bycatch seems seasonal and the seasons for bycatch are not the same in all the areas. The results are discussed in relation with the existing European regulation 812/2004 in which trammel nets are not mentioned.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00209/32016/30451.pdf

http://archimer.ifremer.fr/doc/00209/32016/

Formato: | application/pdf

Fonte:

2014 Ifremer

info:eu-repo/semantics/openAccess

restricted use