Fig. 4.

Evolved mortality depends on food-sharing arrangements. All lines show the natural log of average age-specific death rates (ASDR) over the last 500 cycles of a 15,000-cycle simulation. Each simulation is done under a different assumption about food sharing as discussed and as labeled. “Keeps 100%” means that the kin group does not share at all with a broader sharing group. “Shares 50%” means that the indicated kin group keeps 50% of their food production for consumption within the kin group and puts 50% in the common pool. “Population level sharing” means that all production is put in a common pool for the whole population. “Reshuffling” means the K5 groups are recombined into new sharing groups after each cycle.