Figure 1. Sample locations and morphological analysis. (A) Map of Scotland showing the sampling locations. (B) Pictures showing an example ecomorph pair, here from Loch Tay. Principal component analysis for landmark analysis for Head shape (C) and Body shape (D). Individuals are coloured by lake with larger points representing the mean values for each ecomorph with a line connecting means in each pair. Vector plots display how head shape (E) and body shape (F) morphology changes across PC1 with diagrams showing where each landmark was placed on the fish for each phenotype. Grey points show landmark positions at the minimum PC1 score and vectors show how landmark positions changes at the maximum PC1 score.

Figure 2: