Figure 2. Associations between (A) concentration of total carotenoids, (B) concentration of total pteridines, and (C) ratio of total carotenoids to total pteridine and a habitat productivity (PC1*-1), as well as (D) concentration of total carotenoids and sexual size dimorphism. Solid lines indicate a significant relationship with 95% confidence bounds (grey shading), broken lines indicate a non-significant trend between variables (N=186).