3 CONDITIONS FOR THE EVOLUTION OF EUSOCIALITY - ARE THEY SUFFICIENT

I hypothesize that three conditions, (1) food-shelter coincidence, (2) strong selection for defense, and (3) ability to defend, are sufficie nt, although not necessary, for the evolution of eusociality in group- living animals. Reasons for this association between ecology and eusoc iality include extremely high value of the habitat, possibilities for habitat inheritance, high relatedness in claustral situations, self-su fficiency of juveniles, greater ability of workers to reproduce, and t rade-offs between defensive ability and dispersal.