La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Estimating mortality of Atlantic bluefin tuna (Thunnus thynnus) in an experimental recreational catch-and-release fishery
Auteurs :	Michael J. W. Stokesbury, Auteur ; John D. Neilson, Auteur ; Edward Susko, Auteur ; Steven J. Cooke, Auteur
Type de document :	Article
Dans :	Biological Conservation (144(11) NOV 2011)
Article en page(s) :	2684-2691
Langues:	Anglais
Résumé :	The abundance of Atlantic bluefin tuna has been severely reduced since the advent of industrial fishing. A recreational catch-and-release fishery is currently being developed to target bluefin tuna in the southern Gulf of St. Lawrence, off the coast of Prince Edward Island, Canada. To evaluate the sustainability of this fishery, it is necessary to quantify post-release mortality for use in management models. Using pop-up archival satellite tags, we estimated the post-release mortality rate of bluefin tuna captured and released in an experimental recreational fishery. Fish were captured using bait on circle hooks and all fish were hooked in the jaw. Fish were released without being brought onboard the boat. Tags reported from 2 to 246 days post release. Two of 59 bluefin tuna died after catch-and-release yielding a mortality rate of 3.4% (95% C.I. = 0.8%

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...