We gratefully acknowledge the thorough reviews provided by three anonymous reviewers which greatly improved the clarity of this article. This work was supported by the Serbian Ministry of Science under the project ʻPatterns of Amphibian and Reptile Diversity on the Balkan Peninsulaʼ (grant 143052). The experiments were approved by the Ethical Committee of the Institute for Biological Research ʻSiniša Stankovićʼ (nos. 6/06 and 3/08). All animals were collected under permits provided by the Ministry of Environmental Protection, Republic of Serbia (nos. 353-01-309/2006-03; 353-01-111/2008-03), and the Institute for Nature Protection, Podgorica, Montenegro (no. 01-391/4).
Received: 17 March 2009
Accepted: 30 June 2009
Published online: 11 August 2009
Editor: J.W. Arntzen