10.5061/DRYAD.4PN03
Servedio, Maria R.
University of North Carolina
Price, Trevor D.
University of Chicago
Lande, Russell
Imperial College London
Data from: Evolution of displays within the pair bond
Dryad
dataset
2013
fecundity selection
social displays
social selection
Podiceps cristatus
monogamy
parental investment
2013-05-16T18:14:49Z
2013-05-16T18:14:49Z
en
https://doi.org/10.1098/rspb.2012.3020
614899 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Although sexual selection is an important cause of display evolution, in
socially monogamous species (e.g. many birds), displays continue after
formation of the pair bond. Here, we consider that these displays evolve
because they stimulate the partner to increase investment in offspring.
Our study is motivated by elaborate mutual displays in species that are
largely monomorphic and have long-term pair bonds (e.g. the great crested
grebe, Podiceps cristatus) and by many empirical results evidencing that
display manipulation affects parental investment. Using population genetic
models, we show that a necessary condition for the permanent establishment
of mutual displays in the pair bond is that the benefit of investment by
the pair is more than twice that resulting from investment by a single
individual. Pre-existing biases to respond to displays by increased
investment are a necessary component of display evolution. We also
consider examples where one sex (e.g. males) stimulates increased
investment in offspring by the other sex. Here, display and additional
investment cannot evolve permanently, but can increase and linger at high
frequency for a long time before loss. We discuss how such transient
effects may lead to the evolution of permanent displays as a result of
evolution at additional loci.
asymmetric modelC code, parameter file, and Mathematica file for the
asymmetric model. The positions of entries in the parameter file can be
found in the "getinfo" function in the C file.asymmetric
feedback modelC code, parameter file, and Mathematica file for the
asymmetric feedback model. The positions of entries in the parameter file
can be found in the "getinfo" function in the C file.symmetric
modelC code, parameter file, and Mathematica file for the symmetric model.
The positions of entries in the parameter file can be found in the
"getinfo" function in the C file.symmetric model with fertility
selC code, parameter file, and Mathematica file for the symmetric model
with fertility selection. The positions of entries in the parameter file
can be found in the "getinfo" function in the C file.asymmetric
model with fertility selC code, parameter file, and Mathematica file for
the asymmetric model with fertility selection. The positions of entries in
the parameter file can be found in the "getinfo" function in the
C file.