Amplicons size were rounded, according to the length of the core repeat of each analysed SSR, with an Excel (Microsoft, Redmond, WA) computational sheet. For each considered locus Number of alleles, Expected Heterozygosity, Observed Heterozygosity and Estimated Frequency of Null Alleles were calculated with the aid of the software Identity version 1.0 (Wagner and Sefc 1999) and already reported in Bergamini et al. (2013). Similarly, the same software was used to calculate cumulative Likelihood ratio (LRs) statistics for the detected, putative parent-offspring groups.