10.5061/DRYAD.1H73PD8
De Lisle, Stephen P.
Lund University
Paiva, Samuel
University of Toronto
Rowe, Locke
University of Toronto
Data from: Habitat partitioning during character displacement between the sexes
Dryad
dataset
2018
Notophthalmus viridescens
2016
coloration
2018-05-25T15:24:05Z
2018-05-25T15:24:05Z
en
https://doi.org/10.1098/rsbl.2018.0124
55798 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Ecological differences between the sexes are often interpreted as evidence
of within-species ecological character displacement (ECD), a hypothesis
with almost no direct tests. Here we experimentally-test two predictions,
that are direct corollaries of ECD between the sexes, in a salamander.
First, we find support for the prediction that each sex has a growth rate
advantage in the aquatic microhabitat where it is most commonly found.
Second, we test the prediction that selection for ECD in the breeding
environment may affect partial migration out of this environment. We found
that phenotype-dependent migration resulted in a shift in the phenotypic
distribution across treatments, with the highest sexual dimorphism
occurring among residents at high founding density, suggesting migration
and ECD can both be driven by competition. Our work illustrates how
complex patterns of habitat partitioning evolve during ECD between the
sexes and suggest ECD and partial migration can interact to effect both
ecological dynamics and evolution of sexual dimorphism.
DeLisle_et_al_DATAData from two cattle tank experiments with Notophthalmus
viridescens
Ontario