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Funding: Swiss NSF grant 31003A_129894 to NP. introgression between the parapatric European treefrogs Hyla arborea
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1 fire-bellied toads, Bombina bombina and B. variegata, near Cracow in
Department of Ecology and Evolution, Biophore, University of Lausanne,
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CH-1015 Lausanne, Switzerland. Dipartimento di Biologia Animale, University Southern Poland. Evolution 1986, 40(6):1141-1159.
3
of Palermo, Via Archirafi, 18, 90123 Palermo, Italy. University of Catania, 22. Yanachukov A, Hofman S, Szymura JM, Mezhzherin SV, Morozov-Leonov SY,
CUTGANA, Section of Nature Reserve Management, via Terzora 8, 95027 San Barton NH, Nürnberger B: Hybridization of Bombina bombina and B.
Gregorio di Catania, Catania, Italy. variegata (Anura, Discoglossidae) at a sharp ecotone in western Ukraine:
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Authors’ contributions 60(3):583-600.
The fieldwork was conducted by AS, CC, GFT and MSt, and the molecular 23. Stöck M, Sicilia A, Belfiore NM, Buckley D, Lo Brutto S, Lo Valvo M,
work (genotyping, mitotyping and sequencing) by AS, CC and MSt. The Arculeo M: Post-Messinian evolutionary relationships across the Sicilian
channel: Mitochondrial and nuclear markers link a new green toad from
crossing experiments were performed by CC and MSt, and the statistical
Sicily to African relatives. BMC Evol Biol 2008, 8:56.
analyses and data interpretation by CC, MSt, MA and NP. CC drafted the
24. Colliard C, Sicilia A, Moritz C, Perrin N, Stöck M: New polymorphic
paper, which was edited by MSt and NP, then completed by AS, GFT and
MA. All authors read and approved the final manuscript. microsatellite markers and development of mitotyping primers for West
Mediterranean green toad species (Bufo viridis subgroup). Mol Ecol Resour
Received: 7 April 2010 Accepted: 29 July 2010 Published: 29 July 2010 2009, 9:1138-1140.