Genetic covariance between components of male reproductive success: within-pair vs. extra-pair paternity in song sparrows.

ABSTRACT: The evolutionary trajectories of reproductive systems, including both male and female multiple mating and hence polygyny and polyandry, are expected to depend on the additive genetic variances and covariances in and among components of male reproductive success achieved through different reproductive tactics. However, genetic covariances among key components of male reproductive success have not been estimated in wild populations. We used comprehensive paternity data from socially monogamous but genetically polygynandrous song sparrows (Melospiza melodia) to estimate additive genetic variance and covariance in the total number of offspring a male sired per year outside his social pairings (i.e. his total extra-pair reproductive success achieved through multiple mating) and his liability to

SUBMITTER: Reid JM 

PROVIDER: S-EPMC4283045 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature