Fig. 2: Lizard head shape.
From: Life on a beach leads to phenotypic divergence despite gene flow for an island lizard
Plots of DF1 and DF2 scores from discriminant function analyses of head shape for localities 1-4 for the male (A–D) and female (E–H), with 95% confidence ellipses. Plots A and E correspond to locality 1, plots B and F to locality 2, C and E to locality 3, and D and H to locality 4. For males, DF1 and DF2 represented 38.5 and 18.4% of the total variation and positive DF1 scores correspond to wider snouts while corresponding values for females (plots E–H) were 26.2 and 20.3%, respectively, with negative DF1 scores corresponding to wider snouts (the deformation grids indicate how head shape changes along the two axes). The DFAs were carried out across all eight sites, but just the scores for matched pairs of beach and inland sites are highlighted in each plot for clarity (the smaller, transparent points show remaining scores for individuals from other sites). Sample sizes are given in Supplementary Table 1.
