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Summary: The evolution of prudent choice
Roger Härdling
1
* and Hanna Kokko
2,3
1
Department of Animal Ecology, Ecology Building, Lund University, S-223 62 Lund, Sweden,
2
Laboratory of Ecological and Evolutionary Dynamics, Department of Ecology and Systematics,
University of Helsinki, Helsinki, FIN-00014, Finland and 3
School of Botany and Zoology,
Australian National University, Canberra, ACT 0200, Australia
ABSTRACT
Question: What mate choice strategies are evolutionarily stable when individuals vary in
quality and there is competition over mates?
Mathematical method: We analyse a life-history-based game theoretical model of a mating
system. The evolutionarily stable strategy (ESS) may be random mating, or any kind of
assortative mating dependent on the numerical values of a set of probabilities. We solve for
the evolutionarily stable probability values.
Key assumptions: Males of high or poor competitive ability pair with highly or poorly fecund
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