Figure 2.

Path analysis with standardized pairwise partial correlation coefficients between life history traits and fitness. Significant partial correlation coefficients are in bold. Paths that are included in the full model, but not in the best-supported model (as determined by backwards stepwise selection) are shown in light gray with dashed lines. Longer IBIL (slower production of live offspring) is associated with higher offspring survival and lower LRS. Longer reproductive lifespan is associated with higher offspring survival and higher LRS.