Drivers of sex ratio bias in the eastern bongo: lower inbreeding increases the probability of being born male.

ABSTRACT: Parent sex ratio allocation has consequences for individual fitness, population dynamics, and conservation. Theory predicts that parents should adjust offspring sex ratio when the fitness returns of producing male or female offspring varies. Previous studies have assumed that only mothers are capable of biasing offspring sex ratios, but have neglected fathers, given the expectation of an equal proportion of X- and Y-chromosome-bearing (CBS) sperm in ejaculates due to sex chromosome segregation at meiosis. This assumption has been recently refuted and both paternal fertility and paternal genetic quality have been shown to bias sex ratios. Here, we simultaneously test the relative contribution of paternal, maternal, and individual genetic quality, as measured by inbreeding, on the probabilit

SUBMITTER: Malo AF 

PROVIDER: S-EPMC6532524 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature