Strategic and genetic models of evolution

A new model which allows both for the effect of behavioural patterns on productive matings and for parental investment in the survival of offspring to maturity is considered. This combines ideas from genetics and evolutionary game theory, and provides a more realistic formulation to describe mating behaviour than the traditional `battle of the sexesʹ model. Allowing individuals to migrate leads to spatial versions of both models. The saddle point method is used to obtain the speed of first spread of new genes/strategies in both spatial systems.