Patterns in genetic diversity Global population differentiation was highly significant using all SNPs (global F ST = 0.0068, 95% CI [0.005, 0.0105]; global genic differentiation test, p < 0.001), although clustering analyses with ADMIXTURE provided the strongest support for the model with a single underlying population (Fig C in S1 File ).
We retained two RDA models (out of 8) for statistical significance: the model using sea surface predictors was marginally significant at the full model level (ANOVA, p = 0.063) and for the first axis (ANOVA, p = 0.052), and the model using temperature and current velocity predictors (at sea surface or near-bottom) was significant at the full model level (ANOVA, p = 0.034) and for the first axis (ANOVA, p = 0.035).