Figure 6From: Single nucleotide polymorphisms unravel hierarchical divergence and signatures of selection among Alaskan sockeye salmon (Oncorhynchus nerka) populationsPrincipal coordinate analysis (PCO) between sockeye salmon populations from Iliamna Lake. Based on (a) 38 SNPs ('No Outliers'), (b) 39 SNPs including One_MHC2-190 ('Outlier 1'), or (c) 39 SNPs including One_MHC2-251 ('Outlier 2'). Population numbers can be found in Table 1. Population legends--tributary spawners: empty squares; island-beach spawners: black circles; mainland-beach spawners: grey triangles; Iliamna River (#23, a late-spawning population, Table 1): black square.Back to article page