10.5061/DRYAD.S0B85C2
Mateos, Mariana
Texas A&M University
Domínguez-Domínguez, Omar
Universidad Michoacana de San Nicolás de Hidalgo
Varela-Romero, Alejandro
Universidad de Sonora
Data from: A multilocus phylogeny of the fish genus Poeciliopsis: solving
taxonomic uncertainties and preliminary evidence of reticulation
Dryad
dataset
2019
Poeciliopsis
Reticulation
Trans Mexican Volcanic Belt
phylogenetic networks
National Science Foundation
https://ror.org/021nxhr62
DEB-9902224
2019-01-28T21:15:28Z
2019-01-28T21:15:28Z
en
https://doi.org/10.1002/ece3.4874
9158076 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The fish genus Poeciliopsis constitutes a valuable research system for
evolutionary ecology, whose phylogenetic relationships have not been fully
elucidated. We conducted a multilocus phylogenetic study of the genus
based on seven nuclear and two mitochondrial loci with a thorough set of
analytical approaches, i.e., concatenated (also known as super-matrix),
species trees, and phylogenetic networks. Although several relationships
remain unresolved, the overall results uncovered phylogenetic affinities
among several members of this genus. A population previously considered of
undetermined taxonomic status could be unequivocally assigned to P.
scarlli; revealing a relatively recent dispersal event across the Trans
Mexican Volcanic Belt (TMVB) or Pacific Ocean, which constitute a strong
barrier to north-south dispersal of many terrestrial and freshwater taxa.
The closest relatives of P. balsas, a species distributed south of the
TMVB, are distributed in the north; representing an additional north–south
split in the genus. An undescribed species of Poeciliopsis, with a highly
restricted distribution (i.e., a short stretch of the Rio Concepcion; just
south of the US-Mexico border), falls within the Leptorhaphis species
complex. Our results are inconsistent with the hypothesis that this
species originated by “breakdown” of an asexual-hybrid lineage. On the
other hand, network analyses suggest one or more possible cases of
reticulation within the genus that require further evaluation with
genome-wide marker representation and additional analytical tools. The
most strongly supported case of reticulation occurred within the subgenus
Aulophallus (restricted to Central America), and implies a hybrid origin
for P. retropinna (i.e., between P. paucimaculata and P. elongata). We
consider that P. balsas and P. new species are of conservation concern.
Datasets FilesCompressed archive containing all of the Dataset files,
command lines, and intermediate results to replicate the analyses
presented in this study.DatasetsFiles.ziptestAullophalus
Central America
Mexico and Central America
Mexico