6533b823fe1ef96bd127f6f1
RESEARCH PRODUCT
Negative frequency-dependent selection of sexually antagonistic alleles in Myodes glareolus.
Esa KoskelaMikael MokkonenHanna KokkoJussi LehtonenJussi LehtonenHenna MartiskainenSuzanne C. MillsTapio Mappessubject
0106 biological sciencesMaleLitter SizeFrequency-dependent selectionZoologyBiologySocial Environment010603 evolutionary biology01 natural sciencesLife history theory03 medical and health sciencesSexual Behavior AnimalGenetic variationAnimalsGenetic variabilityAlleleSelection GeneticAllelesEcosystem030304 developmental biology0303 health sciencesSex CharacteristicsMultidisciplinaryNatural selectionModels GeneticDirectional selectionArvicolinaeGenetic VariationFertilitySocial DominanceEvolutionary ecologyFemaleGenetic Fitnessdescription
Sexually antagonistic genetic variation, where optimal values of traits are sex-dependent, is known to slow the loss of genetic variance associated with directional selection on fitness-related traits. However, sexual antagonism alone is not sufficient to maintain variation indefinitely. Selection of rare forms within the sexes can help to conserve genotypic diversity. We combined theoretical models and a field experiment with Myodes glareolus to show that negative frequency-dependent selection on male dominance maintains variation in sexually antagonistic alleles. In our experiment, high-dominance male bank voles were found to have low-fecundity sisters, and vice versa. These results show that investigations of sexually antagonistic traits should take into account the effects of social interactions on the interplay between ecology and evolution, and that investigations of genetic variation should not be conducted solely under laboratory conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-11-19 | Science (New York, N.Y.) |