Sustained Evolution from Changing Interaction

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5 Author(s)

We develop and analyze an agent-based simulation model the purpose of which is to achieve sustained evolution under sympatric conditions. Evolution is understood in the form of speciation, i.e. the emergence of reproductively isolated and functionally distinct populations. In the model, reproduction is expressed as a function of phenotype to phenotype interaction. A population with a given set of phenotypic interactions tends to adaptive stasis, whereas if the interaction space changes, so that new dimensions are added in the course of the process, new species can emerge. We show that this behavior is stable and leads to a persistent production of new species.