Genetic mixed stock analysis of an interceptory Atlantic salmonfishery in the Northwest Atlantic

Interceptory fisheries represent an ongoing threat to migratory fish stocks particularly when managed in the absence of stock specific catch and exploitation information. Atlantic salmon from the southern portion of the North American range may be subject to exploitation in the commercial and recreational salmon fisheries occurring in the French territorial waters surrounding St. Pierre and Miquelon off southern Newfoundland. We evaluated stock composition of Atlantic salmon harvested in the St. Pierreand Miquelon Atlantic salmon fishery using genetic mixture analysis and individual assignment with a microsatellite baseline (15 loci, 12,409 individuals, 12 regional groups) encompassing the species western Atlantic range. Individual salmon were sampled from the St. Pierre and Miquelon fishery over four years (2004, 2011, 2013, and 2014). Biological characteristics indicate significant variation among years in the size and age distribution. Nonetheless, estimates of stock composition of the samples showed consistent dominance of three regions (i.e., Southern Gulf of St. Lawrence, Gaspe Peninsula, and New-foundland). Together salmon from these regions accounted for more than 70% of annual harvest over the decade examined. Comparison of individual assignments and biological characteristics revealed a trend of declining fresh water age with latitude of assigned region. Moreover, locally harvested Newfoundland salmon were ten times more likely to be small or one sea winter individuals whereas Quebec and Gaspe Peninsula salmon were two-three times more likely to be harvested as large or two sea winter salmon.Estimates of region specific catch were highest for salmon from the southern Gulf of St. Lawrence region ranging from 242 to 887 individuals annually. This work illustrates how genetic analysis of interceptory marine fisheries can directly inform assessment and management efforts in highly migratory marines pecies

Inventaire des poissons de l’archipel de Saint-Pierre et Miquelon

International audienceA list of diadromous and marine fishes occurring in the Saint-Pierre and Miquelon archipelago and its eez has been compiled from various available data sources: collections, local and international databases, and literature. this belated work was needed as the only existing checklist dates back to the 19th century and Fishbase, as of early 2022, provided a list of only 14 species, and 81 in the French taxonomic register taXreF. The list assembled here covers 122 species, of which 111 are marine fishes, assigned to 103 genera and 66 families. This list is not comprehensive, but it constitutes a first reference, to be updated with new information.Une liste des poissons diadromes et marins de l’archipel de Saint-Pierre et miquelon et sa zee a été constituée à partir des différentes sources de données disponibles : collections, base de données locales et internationales, et bibliographie. ce travail était nécessaire car l’unique inventaire existant remonte au x i x e siècle et Fishbase au début de 2022, fournissait une liste de seulement 14 espèces, et 81 dans le référentiel taxonomique français taXreF. la présente liste contient 122 espèces, dont 111 marines, réparties en 103 genres et 66 familles. cette liste n’est pas exhaustive et constitue une première référence, qui pourra être mise à jour avec de nouvelles connaissances

Inventaire des poissons de l’archipel de Saint-Pierre et Miquelon

International audienceA list of diadromous and marine fishes occurring in the Saint-Pierre and Miquelon archipelago and its eez has been compiled from various available data sources: collections, local and international databases, and literature. this belated work was needed as the only existing checklist dates back to the 19th century and Fishbase, as of early 2022, provided a list of only 14 species, and 81 in the French taxonomic register taXreF. The list assembled here covers 122 species, of which 111 are marine fishes, assigned to 103 genera and 66 families. This list is not comprehensive, but it constitutes a first reference, to be updated with new information.Une liste des poissons diadromes et marins de l’archipel de Saint-Pierre et miquelon et sa zee a été constituée à partir des différentes sources de données disponibles : collections, base de données locales et internationales, et bibliographie. ce travail était nécessaire car l’unique inventaire existant remonte au x i x e siècle et Fishbase au début de 2022, fournissait une liste de seulement 14 espèces, et 81 dans le référentiel taxonomique français taXreF. la présente liste contient 122 espèces, dont 111 marines, réparties en 103 genres et 66 familles. cette liste n’est pas exhaustive et constitue une première référence, qui pourra être mise à jour avec de nouvelles connaissances