Diversity of mitochondrial DNA of the endangered white-clawed crayfish (Austropotamobius italicus) in the Po River catchment

2. The evolutionary tree topologies and the parsimony network of 26 haplotypes separated into two clusters, on the basis of high average genetic distance (6.51 +/- 0.42%). This finding indicated the presence of distinct evolutionary lineages, other than different allopatric sources.