10.5061/DRYAD.S0VC7
Stern, Caitlin A.
University of North Carolina
Servedio, Maria R.
University of North Carolina
Data from: Evolution of a mating preference for a dual-utility trait used
in intrasexual competition in genetically monogamous populations
Dryad
dataset
2018
dual utility trait
armament-ornament hypothesis
mating preference
monogamy
Mate choice
Intrasexual competition
National Science Foundation
https://ror.org/021nxhr62
DEB-0919018
2018-05-16T00:00:00Z
2018-05-16T00:00:00Z
en
https://doi.org/10.1002/ece3.3145
540297 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The selection pressures by which mating preferences for ornamental traits
can evolve in genetically monogamous mating systems remain understudied.
Empirical evidence from several taxa supports the prevalence of
dual-utility traits, defined as traits used both as armaments in
intersexual selection and ornaments in intrasexual selection, as well as
the importance of intrasexual resource competition for the evolution of
female ornamentation. Here, we study whether mating preferences for traits
used in intrasexual resource competition can evolve under genetic
monogamy. We find that a mating preference for a competitive trait can
evolve and affect the evolution of the trait. The preference is more
likely to persist when the fecundity benefit for mates of successful
competitors is large and the aversion to unornamented potential mates is
strong. The preference can persist for long periods or potentially
permanently even when it incurs slight costs. Our results suggest that,
when females use ornaments as signals in intrasexual resource competition,
males can evolve mating preferences for those ornaments, illuminating both
the evolution of female ornamentation and the evolution of male
preferences for female ornaments in monogamous species.
Analytic derivations, simulation code and resultsThe ZIP archive contains
a Mathematica notebook and a PDF version of the Mathematica notebook,
showing the derivation of the model as well as the code for the
simulations and the results of the simulations.