FORAGER NONFORAGER
Mean number of primary eggs8.68.5
Mean primary egg length0.520.54
Mean number of total eggs20.3718.69
 
 
 
Harmony among Acromyrmex versicolor queens.

Sharig of food allows all queens within a nest of the desert leafcutter ant to reproduce.

After workers emerge (eclosion), however, within-group selection favors noncooperatiion (since cooperators pay a cost not born by noncooperators); queens then fight to gain control of the colony.