Figure 3. Visualization of distance based redundancy analyses
(db-RDAs) of pike, Esox lucius, based on a) the full dataset, and
b) a subset adaptive dataset consisting of the 17 loci identified in the
outlier analyses as putatively under selection. Shape and color of dots
indicate ecotype (blue pyramids: freshwater, grey circles: anadromous,
and red squares: resident), and different shades within colors indicate
populations in latitudinal order from lower (pale) to higher (dark). The
black arrows indicate the effect of latitude (P <
0.001), and grey arrows the effect of midrange salinity (P< 0.001).