10.5061/DRYAD.89KQ4
Rodríguez-Gómez, Flor
Instituto de Ecología
Ornelas, Juan Francisco
Instituto de Ecología
Data from: At the passing gate: past introgression in the process of
species formation between Amazilia violiceps and A. viridifrons
hummingbirds along the Mexican Transition Zone
Dryad
dataset
2016
Amazilia
Amazilia viridifrons viridifrons
Amazilia villadai
Amazilia violiceps violiceps
Amazilia viridifrons wagneri
Trochilidae
Trans-Mexican Volcanic Belt.
Amazilia viridifrons villadai
Amazilia violiceps ellioti
Amazilia viridifrons rowleyi
habitat shift
Isthmus of Tehuantepec
Amazilia viridifrons
environmental space
Amazilia violiceps
2016-02-06T00:00:00Z
2016-02-06T00:00:00Z
en
https://doi.org/10.1111/jbi.12506
386970 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Aim: We tested whether populations of violet-crowned and green-fronted
hummingbirds, Amazilia violiceps and Amazilia viridifrons, are genetically
and environmentally differentiated, and examined the role of past
geological and climatic changes in driving their diversification.
Location: Trans-Mexican Volcanic Belt. Methods: Mitochondrial and nuclear
DNA of individuals collected throughout the species' ranges were
sequenced and then analysed using maximum-likelihood and Bayesian
approaches. Species tree analysis, Bayesian species delimitation,
divergence time inference, historical demography, palaeodistribution
modelling, and niche divergence tests were used to reconstruct the
evolutionary history of the Amazilia species, and the
isolation-with-migration coalescent model was assessed to determine
whether genetic divergence between Amazilia species occurred in the
presence of gene flow. Results: Genetic divergence between A. violiceps
and A. viridifrons was shallow, with incomplete lineage sorting and
introgression. Species delimitation supported three independent lineages:
A. violiceps populations located north of the Trans-Mexican Volcanic Belt;
a mixture of A. violiceps south of the volcanic belt and A. viridifrons
populations; and A. villadai populations east of the Isthmus of
Tehuantepec. Gene flow and divergence time estimates, and demographic and
palaeodistribution patterns support the model of species diversification
by isolation with migration and habitat shifting in response to
Pleistocene climatic fluctuations. Main conclusions: The process of
speciation in the Amazilia species complex may be explained by the
combined effects of isolation resulting from the Trans-Mexican Volcanic
Belt and the lowlands at the Isthmus of Tehuantepec and habitat shifting
in response to Quaternary climatic changes.
ND2 SequencesND2_File: Amazilia viridifrons and Amazilia violiceps
nicotinamide adenine dinucleotide dehydrogenase (NADH) subunit 2
mitochondial sequences.ND2.fasND5 SequencesND5_File: Amazilia viridifrons
and Amazilia violiceps nicotinamide adenine dinucleotide dehydrogenase
(NADH) subunit 5 mitochondial sequences.ND5.fasARCO SequencesARCO_File:
Amazilia viridifrons and Amazilia violiceps hypervariable domain I of the
noncoding control region mitochondial sequences.ARCO.fasATPASE
SequencesATPase_File: Amazilia viridifrons and Amazilia violiceps ATPase
6 and ATPase 8 mitochondial sequences.ATPASE.fas20454 Sequences20454_File:
Amazilia viridifrons and Amazilia violiceps 20454 locus nuclear
sequences.20454.fasRodríguez-Gómez&Ornelas_IMa_VIOLICvsVIRIDI_combRodríguez-Gómez&Ornelas_IMa_VIOLICvsVIRIDI_comb: VIOLIC populations from North of the TMVB versus VIRIDI populations from South of the TMVB of Amazilia violiceps and Amazilia viridifrons, combining mitochondrial and nuclear markers.Amazilia violiceps_MAXENT_FileAmazilia violiceps_MAXENT_File: coordinates longitude and latitude of Amazilia violicepsAmazilia viridifrons_MAXENT_FileAmazilia viridifrons_MAXENT_File: coordinates longitude and latitude of Amazilia viridifrons.
USA
Mexico