Results of the longevity assay. Mean longevity (time to death) of selected males under (a) non-reproducing and (b) reproducing conditions (continuously held with LH-females). A mean longevity was calculated for each vial. These vial means are used as the unit of analysis. (c) LH-female mortality per week. Mortality rate was calculated for each of the nine populations by regressing cumulative weekly mortality across all the replicate vials against time (in weeks). These population level measures of mortality rates were then taken as the unit of analysis. In LH-female mortality rate plot, points not sharing common letter are significantly different (determined using Tukey’s HSD).