Table 6. Loadings of mass-corrected life history trait residuals on the first two principal component axes.

	PC1	PC2
Life History Traits and PC Loadings
Residual of gestation length (days)	0.45	-0.34
Residual of litter size	-0.42	0.20
Residual of neonate body mass (g)	0.20	-0.75
Residual of interbirth interval (days)	0.46	0.24
Residual of weaning age (days)	0.40	0.42
Residual of sexual maturity age (days)	0.46	0.23
Proportion of Variance Explained	0.63	0.23

Each of the six life history traits were regressed against adult body mass (g) to obtain mass-corrected residuals. The loadings of each trait residual variable on the first two principal components is given along with the proportion of variance explained by each component.