Figure 3 : Stern and Lee (2020) show that balancing selection in native saltwater populations of the Eurytemora affinis species complex acted on the same loci repeatedly subject to directional selection in the invasive freshwater range. Upper panel: scan for the footprint of directional selection using Bayescan 3(Foll, Gaggiotti, Daub, Vatsiou, & Excoffier, 2014). Dashed line indicates significance threshold for test of directional selection.Lower panel: Signatures of balancing selection were quantified in four native populations (each shape corresponds to a population) using the summary statistic β(2) (Siewert & Voight, 2020). Points in blue are within the top 1% ofβ(2) scores calculated within each population. The chromosomal coordinates of genes in the NHA family are highlighted in grey in both panels. Figure adapted from Stern and Lee (2020).