Figure 3. Correlations between carotenoid and pteridine
subcategories. (A) Correlation matrix showing HPD intervals of
estimates from GLMMs. Size and color of upper diagonal circles indicate
the strength and direction of the relationship. Central circles indicate
the color of pigment subcategories. Significant correlations are in
bold. There was no relationship between similarly hued carotenoids and
pteridines: red ketocarotenoids and drosopterin (B), and yellow dietary
carotenoids and xanthopterin (C). Broken lines indicate a
non-significant trend between variables (N=186).