The Evolution of Sex Ratio Adjustment in the Presence of Sexually Antagonistic Selection

@article{Blackburn2010TheEO,
  title={The Evolution of Sex Ratio Adjustment in the Presence of Sexually Antagonistic Selection},
  author={Gwylim S Blackburn and Arianne Y K Albert and Sarah Perin Otto},
  journal={The American Naturalist},
  year={2010},
  volume={176},
  pages={264 - 275}
}
Sex ratio adjustment (SRA) of broods has received widespread interest as a means for optimizing parental investment in offspring. Classical explanations for the evolution of SRA focus on improving offspring fitness in light of resource availability or mate attractiveness. Here, we use genetic models to demonstrate that SRA can evolve to alleviate sexual antagonism by improving the chance that the alleles of a sexually antagonistic trait are transmitted to the sex they benefit. In cases where… 
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Assessing the additive genetic (co)variance of fitness within and between sexes in a wild population of the brown anole lizard found that, as the number of sons produced by a sire increased, the adult viability of his male progeny increased.
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Interannual variation in the relationships between offspring SR and parental traits was observed which may suggest phenotypic plasticity in sex allocation and provides a proximate explanation for inconsistent results of studies of sex allocation in relation to sexual ornamentation in birds.
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It is shown that sexual antagonism can favor the fixation and maintenance of gene duplicates, eventually leading to the evolution of sexually dimorphic genetic architectures for male and female traits.
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A meta‐analysis of the empirical literature that has accumulated to test the hypothesis that females should produce mainly sons when mating with more attractive or higher quality males finds no evidence that their sons have higher mean fitness than their daughters.
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TLDR
It is shown that balancing selection is common under biologically plausible conditions and that sex differences in selection or sex-by-genotype effects of mutations can each increase opportunities for balancing selection.
Meiotic drive influences the outcome of sexually antagonistic selection at a linked locus
  • M. Patten
  • Biology, Psychology
    Journal of evolutionary biology
  • 2014
TLDR
It is found that drive at a linked locus favours the fixation of sexually antagonistic alleles that benefit the sex in which drive occurs and under certain conditions reduced recombination between these two loci is selectively favoured.
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