Table 5. Gene flow and genetic differentiation indices between the three E18 clusters estimated from VP1 sequences.

Phylogroup 1	Phylogroup 2	Fst	Nm	Kxy	Dxy	Gst	Da
Red-I	Green-II	0.51	0.48	30.6	0.09	0.029	0.05
Red-I	Blue-III	0.63	0.29	39.7	0.13	0.024	0.08
Blue -III	Green-II	0.39	0.78	30.2	0.09	-0.006	0.04

Fst: Wright’s F-statistics, pairwise genetic distance, Nm: Gene flow and population migration among populations which is calculated as Nm = (1-Fst)/2Fst, Kxy: Average proportion of nucleotide differences between populations. Dxy: The average number of nucleotide substitutions per site between populations, Da: The number of net nucleotide substitutions per site between populations, Gst: Genetic differentiation index based on the frequency of haplotypes.