Fig 3. Principal component scores for mammalian species.

We conducted principal components analysis using mass-corrected residual values for six key life history traits: gestation length (days), litter size, neonate body mass (g), interbirth interval (days), weaning age (days), and age at sexual maturity (days). Plotted in black are the first two PC scores for the 178 unique mammalian species we identified as reservoirs. Scores for all other mammal species are shown in grey.