Rapid evolution of the intersexual genetic correlation for fitness inDrosophila melanogaster

摘要: Sexual antagonism (SA) arises when male and female phenotypes are under opposing selection, yet genetically correlated. Until resolved, limits evolution toward optimal sex-specific phenotypes. Despite its importance for adaptation existing theory, the dynamics of SA resolution not well understood empirically. Here, we present data from Drosophila melanogaster, compatible with a SA. We compared two independent replicates "LHM " population in which had previously been described. Both maintained identical, controlled conditions, separated around 200 generations. Although heritabilities fitness were similar, intersexual genetic correlation differed significantly, being negative one replicate (indicating SA) but close to zero other. Using sequencing, show that phenotypic differences associated divergence allele frequencies at nonrandom loci across genome. Large frequency changes more prevalent without enriched mapping genes shown have sexually antagonistic relationships between expression fitness. Our suggest rapid has occurred populations open avenues studying genetics resolution.