Fig. 4.

Distance-base redundancy analysis (db-RDA) performed on the genetic data. The db-RDA performed on the total filtered 15,044 SNPs identified. Symbols represent rivers: circle, Capilano; square, Quinsam. Colors represent captivity treatment: blue, hatchery; yellow, wild. The db-RDA was globally significant and explained 18% of all SNPs variation (adj. R² = 0.18). River of origin and sex explained significantly 16% and 2%, respectively, of the variation after controlling for each other with subsequent partial db-RDAs. ***P value < 0.001 and *P value < 0.5, related to the explanatory factors.