TABLE 3.

Genetic features and occurrence of recombination at the five MLST loci

Locus	Data seta	No. of alleles	% of VIb	Nucleotide diversity per site	G+C content (%)	Ka/Ks	Recombination (MaxChi, P < 0.01)c
gatB	ABDF	26	28.7	0.078	37.2	0.093	Yes (G. firmus)d
	A	13	9.2	0.027	37.8	0.151	No
	B	11	11.1	0.022	36.6	0.135	No
coxA	ABDF	27	28.4	0.083	39.3	0.078	No
	A	11	4.5	0.015	39.9	0.099	No
	B	14	17.4	0.053	38.7	0.072	Yes (P. sialia[B1], T. confusum, E. formosa)
hcpA	ABDF	31	36.5	0.081	37.0	0.140	No
	A	13	12.6	0.029	37.7	0.090	Yes (A. albopictus, A. sparsa)
	B	16	15.6	0.028	36.3	0.346	No
fbpA	ABDF	28	30.5	0.092	38.6	0.084	Yes (A. vulgare)
	A	12	9.0	0.034	38.7	0.085	No
	B	15	20.1	0.063	38.7	0.089	Yes (C. alternans)
ftsZ	ABDF	25	24.8	0.065	41.5	0.047	No
	A	10	6.4	0.012	42.6	0.028	No
	B	14	10.3	0.020	40.4	0.065	No

^aData sets A and B included 18 supergroup A strains and 17 supergroup B strains, respectively (Table 2).

^bThe percentage of variable sites was estimated by considering indels in each data set variable sites.

^cRecombination inferences for data set ABDF refer to events that occurred between supergroups.

^dThe organisms in parentheses are hosts of putative recombinant strains.