10.5061/DRYAD.H18931ZPD
Catullo, Renee
0000-0002-1790-7085
University of Western Australia
Jaya, Frederick
University of Technology Sydney
Tanner, Jessie
University of Western Australia
Whitehead, Michael
University of Melbourne
Doughty, Paul
0000-0003-0631-0571
Western Australian Museum
Keogh, Scott
Australian National University
Moritz, Craig
Australian National University
Population genomics and sexual signals identify reproductive interference
in Uperoleia
Dryad
dataset
2022
FOS: Biological sciences
anuran
acoustic
population genetic dataset
population genetic methods
Australian Research Council
https://ror.org/05mmh0f86
2022-06-10T00:00:00Z
2022-06-10T00:00:00Z
en
https://doi.org/10.5281/zenodo.6596944
199950757 bytes
3
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
When closely related species come into contact via range expansion, both
may experience reduced fitness as a result of the interaction. Selection
is expected to favor traits that minimize costly interspecies reproductive
interactions (such as mismating) via a phenomenon called reproductive
character displacement (RCD). Research on RCD frequently assumes secondary
contact between species, but the geographic history of species
interactions is often unknown. Landscape genomic data allows tests of
geographic hypotheses about species origins and secondary contact through
range expansion. We used landscape genomic data from single nucleotide
polymorphisms (SNPs), mitochondrial sequence data, advertisement call
data, and morphological data to investigate a species complex of toadlets
(Uperoleia borealis, U. crassa, U. inundata) from northern Australia.
Although the three species of frogs were morphologically indistinguishable
in our analysis, we determined that U. crassa and U. inundata form a
single species (synonymized here) based on an absence of genomic
divergence. SNP data identified the phylogeographic origin of U. crassa as
the Top End, with subsequent westward invasion into the range of U.
borealis in the Kimberley. We identified six F1 hybrids, all of which had
the U. borealis mitochondrial haplotype, suggesting unidirectional
hybridization. Consistent with the RCD hypothesis, U. borealis and U.
crassa sexual signals differ more in sympatry than in allopatry. Hybrid
males have intermediate calls, which likely reduces attractiveness to
females. Integrating landscape genomic data, mitochondrial sequencing,
morphology, and behavioral approaches supplies us an unusually detailed
collection of evidence for reproductive character displacement following
range expansion and secondary contact.
Please see associated manuscript: Population genomics and sexual signals
support reproductive character displacement in Uperoleia (Anura:
Myobatrachidae) in a contact zone
Acoustic and morphological datasets are xlsx files and opened in Microsoft
excel or alternatives. SNP datasets are .csv and can be opened in R with
the package dartR. R scripts can be opened in R.