RT Journal Article
SR Electronic
T1 Self-fertilization and 1 inbreeding limit the scope for sexual antagonism
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 009365
DO 10.1101/009365
A1 Samuel J. Tazzyman
A1 Jessica K. Abbott
YR 2014
UL http://biorxiv.org/content/early/2014/09/18/009365.abstract
AB Sexual antagonism occurs when there is a positive intersexual genetic correlation in trait expression but opposite fitness effects of the trait(s) in males and females. As such, it constrains the evolution of sexual dimorphism and may therefore have implications for adaptive evolution. There is currently considerable evidence for the existence of sexually antagonistic genetic variation in laboratory and natural populations, but how sexual antagonism interacts with other evolutionary phenomena is still poorly understood in many cases. Here we explore how self-fertilization and inbreeding affect the maintenance of polymorphism for sexually antagonistic loci. We expected a priori that selfing should reduce the region of polymorphism, since inbreeding reduces the frequency of heterozygotes and speeds fixation. Although this expectation was supported, our results show that there is an interactive effect between the degree of selfing and dominance such that those segregating sexually antagonistic loci that do exist are more likely to be partially dominant. In addition, inbreeding effects may influence population persistence and genomic location of sexually antagonistic loci in separate-sexed organisms.