Table 1. Phylogeographic model testing.

		COI		hsp70
Scenario	No. of parameters	LnL	AIC	LnL	AIC
full model	9	21.6	−25.2	194.88	−371.76
S>A, S>F	5	−6.0	22.0	−44.58	99.15
F>S, F>A	5	−63.9	137.9	−318.35	646.70
A>F, A>S	5	−37.7	85.4	−74.56	159.12
F>S>A	5	−6.0	22.0	−74.56	159.12
A>S>F	5	−64.0	138.0	−314.03	638.06
S>F>A	5	−63.9	137.9	−290.15	590.30
A>F>S	5	−37.7	85.4	−71.33	152.66
S>A>F	5	21.6	−33.2	194.89	−379.79
F>A>S	5	−55.6	121.2	−318.35	646.70

Results of the migration hypothesis model selection for mitochondrial COI and nuclear hsp70 locus between the regions Sardinia (S), Algeria (A) and France (F). AIC values measure the fit of the models to the data, taking different parameterisation into account. Note that smaller values indicate better fit. Models suggesting origin in Sardinia, followed by expansion to Algeria and subsequent colonisation of France (S>A>F) received decisive support (ΔAIC>55.2 and 478.94, respectively).