TY  - GEN
A1  - Senczuk, Gabriele
A1  - Havenstein, Katja
A1  - Milana, Valentina
A1  - Ripa, Chiara
A1  - De Simone, Emanuela
A1  - Tiedemann, Ralph
A1  - Castiglia, Riccardo
T1  - Spotlight on islands
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Groups of proximate continental islands may conceal more tangled phylogeographic patterns than oceanic archipelagos as a consequence of repeated sea level changes, which allow populations to experience gene flow during periods of low sea level stands and isolation by vicariant mechanisms during periods of high sea level stands. Here, we describe for the first time an ancient and diverging lineage of the Italian wall lizard Podarcis siculus from the western Pontine Islands. We used nuclear and mitochondrial DNA sequences of 156 individuals with the aim of unraveling their phylogenetic position, while microsatellite loci were used to test several a priori insular biogeographic models of migration with empirical data. Our results suggest that the western Pontine populations colonized the islands early during their Pliocene volcanic formation, while populations from the eastern Pontine Islands seem to have been introduced recently. The inter-island genetic makeup indicates an important role of historical migration, probably due to glacial land bridges connecting islands followed by a recent vicariant mechanism of isolation. Moreover, the most supported migration model predicted higher gene flow among islands which are geographically arranged in parallel. Considering the threatened status of small insular endemic populations, we suggest this new evolutionarily independent unit be given priority in conservation efforts.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 991 
KW  - mitochondrial dna sequences
KW  - genetic diversity
KW  - haplotype reconstruction
KW  - evolutionary history
KW  - geological evolution
KW  - population structure
KW  - Tyrrhenian Sea
KW  - endemic lizard
KW  - genotype data
KW  - biogeography
Y1  - 2020
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/44636
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-446360
SN  - 1866-8372
IS  - 991
ER  -