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Conflict and cooperation over sex : the consequences of social and genetic polyandry for reproductive success in dunnocks [Journal of Animal Ecology]

Keywords : cooperative polyandry, extra-group paternity, inbreeding avoidance, male reproductive cooperation, mating system, promiscuity, Prunella modularis

par Frédéric Magné - publié le

1.Conflict and cooperation within and between the sexes are among the driving forces that lead to the evolution of mating systems. Among mating strategies, female genetic polyandry and male reproductive cooperation pose challenging evolutionary questions regarding the maintenance of systems where one sex suffers from reduced fitness.
2.Here, we investigate the consequences of social and genetic polyandry for reproductive success of females and males in a population of the dunnock, Prunella modularis.
3.We show that female multiple mating ameliorates the negative effects of inbreeding. We, however, found little evidence that females engage in extra-group (pair) mating with less related or more heterozygous males.(...)

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