Περίληψη:
TheMediterranean Basin has experienced extensive change in geology and
climate over the past sixmillion years. Yet, the relative importance of
key geological events for the distribution and genetic structure of the
Mediterranean fauna remains poorly understood. Here, we use population
genomic and phylogenomic analyses to establish the evolutionary history
and genetic structure of common wall lizards (Podarcis muralis). This
species is particularly informative because, in contrast to other
Mediterranean lizards, it is widespread across the Iberian, Italian, and
Balkan Peninsulas, and in extra-Mediterranean regions. We found strong
support for six major lineages within P. muralis, which were largely
discordant with the phylogenetic relationship of mitochondrial DNA. The
most recent common ancestor of extant P. muralis was likely distributed
in the Italian Peninsula, and experienced an “Out-of-Italy”
expansion following the Messinian salinity crisis (similar to 5 Mya),
resulting in the differentiation into the extant lineages on the
Iberian, Italian, and Balkan Peninsulas. Introgression analysis revealed
that both inter- and intraspecific gene flows have been pervasive
throughout the evolutionary history of P. muralis. For example, the
Southern Italy lineage has a hybrid origin, formed through admixture
between the Central Italy lineage and an ancient lineage that was the
sister to all other P. muralis. More recent genetic differentiation is
associated with the onset of the Quaternary glaciations, which
influenced population dynamics and genetic diversity of contemporary
lineages. These results demonstrate the pervasive role of Mediterranean
geology and climate for the evolutionary history and population genetic
structure of extant species.
Συγγραφείς:
Yang, Weizhao
Feiner, Nathalie
Salvi, Daniele
Laakkonen,
Hanna
Jablonski, Daniel
Pinho, Catarina
Carretero, Miguel A.
and Sacchi, Roberto
Zuffi, Marco A. L.
Scali, Stefano and
Plavos, Konstantinos
Pafilis, Panayiotis
Poulakakis, Nikos and
Lymberakis, Petros
Jandzik, David
Schulte, Ulrich
Aubret,
Fabien
Badiane, Arnaud
de Lanuza, I, Guillem Perez
Abalos,
Javier
While, Geoffrey M.
Uller, Tobias
