10.5061/DRYAD.Q3NG0
Bastos-Silveira, Cristiane
University of Lisbon
Santos, Sara M.
University of Lisbon
Monarca, Rita
University of Lisbon
Mathias, Maria da Luz
University of Lisbon
Heckel, Gerald
University of Bern
Data from: Deep mitochondrial introgression and hybridization among
ecologically divergent vole species
Dryad
dataset
2012
Microtus duodecimcostatus
Microtus
Microtus lusitanicus
2012-08-17T20:01:37Z
2012-08-17T20:01:37Z
en
https://doi.org/10.1111/mec.12018
109056 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The completion of speciation is typically difficult to ascertain in
rapidly diverging taxa but the amount of hybridization and gene flow in
sympatry or parapatry contains important information about the level of
reproductive isolation achieved. Here we examined the progress in
speciation between the Mediterranean (Microtus duodecimcostatus) and the
Lusitanian pine vole (M. lusitanicus) which are part of the most rapid
radiation of species known in mammals. These two Iberian pine voles are
classified as separate species because of differences in morphology and
ecology, but relatively many ambiguous individuals can be found in
sympatric conditions. Our phylogenetic analyses of rangewide data from the
mitochondrial cytochrome b gene (mtDNA) demonstrated high levels of
diversity and a basal separation in two parapatric lineages. However,
mtDNA affiliation was at odds with morphological classification or
geographical distribution of the taxa. In contrast, statistical analyses
of microsatellites (nucDNA) showed two clear genetic clusters in allopatry
and sympatry generally matching morphological classification. This
cytonuclear discordance over a large geographic area suggests historical
introgression of mtDNA from M. duodecimcostatus to M. lusitanicus. There
was statistical evidence for at least two recent hybrids in the sympatry
zone but gene flow is apparently low given clear-cut differences in
nucDNA. Our results indicate a relatively advanced speciation process in
these Iberian pine voles without fully established reproductive isolation.
This situation enables use of combined population genomic and experimental
approaches for the separation of patterns and mechanisms in the ongoing
explosive diversification of these and other Arvicoline rodents in the
future.
CBSilveira el al 2012The file contains data from 295 individuals genotyped
for 13 microsatellite (127 Microtus duodecimcostatus MD), 104 Microtus
lusitanicus (ML) and 52 individuals for which assignment to either species
based on morphology was difficult here termed Microtus sp (M)). First line
contains microsatellite names. Each microsatellite has two columns one for
each allele genotyped. Empty cell represents no data.
Iberian Peninsula
Portugal
Spain