Genetic analysis in a mainland melanic lizard (Podarcis sicula) population from Cilento and Vallo di Diano national park (Campania, Italy)

Abstract

The results are presented of a microsatellite study performed on melanic and normal specimens of Podarcis sicula found sympatric in a very small area in the Cilento mountain region (Roscigno, southern Italy). The melanic sub-population showed low variability and departure from HW equilibrium in the considered loci (three out of five). We also provide evidence that genetic exchanges between normal and melanic phenotypes are minimal. This genetic evidence is discussed and an eco-biogeographic based hypothesis is advanced.