Lack of Genetic Diversity in Salamandra lanzai Revealed by Cytochrome b Gene Sequences
The black salamander, Salamandra lanzai, exists in isolated and fragmented populations in the Cottian Alps. To examine the degree of intra- and interpopulation divergence, mitochondrial cytochrome b sequences were obtained from samples representing all populations of S. lanzai. No genetic variation was observed either within or among populations. The presence of a single lineage suggests historical explanations closely related to Pleistocene events.Abstract

Map of Southern Alps showing current range of Salamandra lanzai, approximate maximal extent of Late Pleistocene glaciers (based on Bureau des Ressources Géologiques et Minières) and potential glacial refugium in Mediterranean Alps (dotted line)