Parental genetic similarity and offspring performance in blue tits in relation to brood size manipulation.

ABSTRACT: In birds, as in many other taxa, higher genetic similarity of mates has long been known to reduce offspring fitness. To date, the majority of avian studies have focused on examination whether the genetic similarity of social mates predicts hatching success. Yet, increased genetic similarity of mates may also reduce offspring fitness during later life stages, including the nestling period and beyond. Here, we investigated whether parental genetic similarity influences offspring performance using data from free-living blue tits (Cyanistes caeruleus) collected across three breeding seasons. Additionally, we tested whether brood size manipulation affects the magnitude and direction of the relationship between genetic similarity of mates and offspring performance. Sixteen microsatellite

SUBMITTER: Arct A 

PROVIDER: S-EPMC6787802 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature