Means and 95% confidence intervals of the life-history traits of female body mass (A), 24-hr fecundity (B), and age at first reproduction, analyzed with regression (C) and Kaplan-Meier survival analysis (D). Observations from laying individuals only are shown in B-C and are jittered to show individual points. In D, solid lines represent means of core and edge only and dashed lines are each population.