Speciation history and widespread introgression in the European short-call tree frogs (Hyla arborea sensu lato, H. intermedia and H. sarda)

0454182 - ÚBO 2016 CZ eng A - Abstract
Gvoždík, Václav - Canestrelli, D. - García-París, M. - Moravec, J. - Nascetti, G. - Recuero, E. - Teixeira, J. - Kotlík, P.
Speciation history and widespread introgression in the European short-call tree frogs (Hyla arborea sensu lato, H. intermedia and H. sarda).
Zoologické dny Brno 2015: sborník abstraktů z konference 12.-13. února 2015. Brno: Ústav biologie obratlovců AV ČR, 2015 - (Bryja, J.; Řehák, Z.; Zukal, J.). s. 75. ISBN 978-80-87189-18-4.
[Zoologické dny. 12.02.2015-13.02.2015, Brno]
Institutional support: RVO:68081766
Keywords : European tree frogs
Subject RIV: EG - Zoology

European tree frogs (Hyla) characterized by short temporal parameters of the advertisement call form six genetically differentiated but morphologically cryptic taxa, H. arborea sensu stricto, H. orientalis and H. molleri from across Europe to western Asia (together referred to as H. arborea sensu lato), two putative taxa within H. intermedia (Northern and Southern) from the
Italian Peninsula and Sicily, and H. sarda from Sardinia and Corsica. Here, we assess species limits and phylogenetic relationships within these "short-call tree frogs" based on mitochondrial DNA and nuclear protein-coding markers. The mitochondrial and nuclear genes show partly incongruent phylogeographic patterns, which point to a complex history of gene flow across
taxa, particularly in the Balkans. To test the species limits in the short-call tree frogs and to infer the species tree, we used coalescent-based approaches. The monophyly of H. arborea sensu lato is supported by the mtDNA as well as by the all-gene species tree. The Northern and Southern lineages of H. intermedia have been connected by nuclear gene flow and should be treated as conspecific. On the contrary, the parapatric taxa within H. arborea sensu lato should be
considered distinct species based on the coalescent analysis, although signs of hybridization were detected between them. A mitochondrial capture upon secondary contact appears to explain the close mtDNA relationship between the geographically remote Iberian H. molleri and H. orientalis from around the Black Sea. Introgressive hybridization occurred also between the
Balkan H. arborea and northern Italian H. intermedia, and between the Minor Asiatic H. orientalis and Arabian H. felixarabica. Our results shed light on the species limits in the European short-call tree frogs and show that introgression played an important role in the
evolutionary history of the short-call tree frogs and occurred even between taxa supported as distinct species.
Permanent Link: http://hdl.handle.net/11104/0254880