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Sexual selection can both increase and decrease extinction probability : reconciling demographic and evolutionary factors [Journal of Animal Ecology]

Keywords : adaptation, climate change, environmental change, evolution, extinction, individual-based model, sexual selection

par Frédéric Magné - publié le

1.Previous theoretical models of the effect of sexual selection on average individual fitness in a population have mostly predicted that sexually selected populations should adapt faster and clear deleterious mutations more quickly than populations where sexual selection is not operating.
2.While some laboratory studies have supported these predictions, others have not and studies of field systems have tended to find negative effects of sexual selection, or no effect. The negative effects of sexual selection found in field and other studies are usually ascribed to the costs associated with strong sexual selection acting on the population.(...)

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