The evolutionary genetics of paternal care: how good genes and extra-pair copulation affect the trade-off between paternal care and mating success

Courtney Fitzpatrick, Colette Ciresi & Michael Wade
We investigate the evolution of a gene for paternal care, with pleiotropic effects on male mating fitness and offspring viability, with and without extra pair copulations (EPCs). We develop a population genetic model to examine how pleiotropic effects of a male mating advantage and paternal care are affected by ‘good genes’ and EPCs. Using this approach, we show that the relative effects of each on fitness do not always predict the evolutionary change. We then...
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