Population genomics, life-history tactics and mixed stock subsistence fisheries in the northernmost American Atlantic salmon populations

The first aim was to document the genomic structure of the Nunavik Atlantic salmon (Salmo salar) populations. The second objective was to determine whether salmon only migrating to the Koksoak River estuary without reaching the sea (known as estuarines), apparently unique to those populations, represent distinct populations from the typical anadromous salmons (known as marines) and subsequently explore the genetic basis of migratory life-history tactics in the species. Finally, the third goal was to quantify the contribution of each genetically distinct population and life-history tactic in the mixed stock subsistence fishery of the Koksoak R. estuary. We used Genotyping-By-Sequencing to genotype 14061 single nucleotide polymorphisms (SNPs) in the genome of 248 individuals from 8 source populations and 280 individuals from Koksoak estuary mixed stock fishery.