Table 1 Analysis of molecular variance (AMOVA). Percentage of variation explained at each spatial/ecotopic level and fixation indexes for grouping according to municipalities or for Triatoma brasiliensis ecotypic populations within municipalities in Rio Grande do Norte and Paraíba, Brazil

Variation between municipalities

3

0.29 Va

18

0.17 F_CT

0.0010

Among populations within municipalities

11

0.58 Vb

36

0.76 F_SC

< 0.0001

Within populations

115

0.76 Vc

46

0.54 F_ST

< 0.0001

Between groups of ecotypic populations in each municipality

4

0.16 Va

10

0.10 F_CT

0.050

Among populations within groups

10

0.63 Vb

41

0.46 F_SC

< 0.0001

Within populations

115

0.76 Vc

49

0.51327 F_ST

< 0.0001