Variation in parent-offspring kinship in socially monogamous systems with extra-pair reproduction and inbreeding.

ABSTRACT: Female extra-pair reproduction in socially monogamous systems is predicted to cause cuckolded socially-paired males to conditionally reduce paternal care, causing selection against extra-pair reproduction and underlying polyandry. However, existing models and empirical studies have not explicitly considered that cuckolded males might be related to their socially-paired female and/or to her extra-pair mate, and therefore be related to extra-pair offspring that they did not sire but could rear. Selection against paternal care, and hence against extra-pair reproduction, might then be weakened. We derive metrics that quantify allele-sharing between within-pair and extra-pair offspring and their mother and her socially-paired male in terms of coefficients of kinship and inbreeding. We use song

SUBMITTER: Reid JM 

PROVIDER: S-EPMC4949684 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature