Table 6. Lineages of predominant Trypanosoma cruzi clones detected in the midgut of T. infestans triatomines from three Chilean regions (III, V and M).
| Sample groupsa | No. (%) of T. cruzi clones found of each lineageb | ||||
| TcI | TcII | TcIII | H | NDd | |
| III (nc = 15) | 4 (26.7) | 0.0 | 7 (46.7) | 0.0 | 4 (26.7) |
| V (n = 37) | 13 (35.1) | 0.0 | 12 (32.4) | 3 (8.1) | 9 (24.3) |
| M (n = 12) | 5 (41.7) | 0.0 | 5 (41.7) | 2 (16.7) | 0.0 |
| Total (n = 64) | 22 (34.4) | 0.0 | 24 (37.5) | 5 (7.8) | 13 (20.3) |
| Pair | P valuee | ||||
| III/V | 0.3478; 0.5 | 1 | 0.9326; 0.334 | 0.548 | 0.0312; 0.861 |
| III/M | 0.448 | 1 | 0.675; 0.795 | 0.188 | 0.106 |
| V/M | 0.683; 0.16 | 1 | 0.584 | 0.584 | 0.09 |
aIII, V and M: groups of midgut samples from 15, 37 and 12 Triatoma infestans captured in the III, V and Metropolitan regions, respectively.
bDetermined using the Geneclass program using simultaneously the methods of: Goldstein et al. (1995), Paetkau et al. (1995) and Rannala and Mountain (1997) (see the section on ‘Materials and methods’). The lineage nomenclature used corresponds to the recent agreement (Zingales et al., 2009).
c Triatomine number.
dND = not determined.
eSignificant (*P<0.05). Determined by Fischer’s exact method (one value) or Chi-squared (two values).