Table 2.
Toxicological profiles to deltamethrin in survivors of T. infestans resistant colony (F1 and F2), after application of deltamethrin (10 ng a.i./nymph)
| Population cross | N° | Slope +/− SD | X 2 (df) | P | LD50 (95 % CI) | RR50 (95 % CI) |
|---|---|---|---|---|---|---|
| CIPEIN (SRL)* | 240 | 2.83+/−0.04 | 3.43 (4) | 0.51 | 0.42 (0.35–0.49) | - |
| Resistant (Parental) Colony* | 360 | 2.25 +/− 0.04 | 3.05 (9) | 0.04 | 54.23 (45.54–63.32) | 129.12 (104.32–166.38) |
| Surviving F1 | 210 | 1.68 +/− 0.42 | 0.59 (5) | 0.01 | 121.93 (93.65–161.66) | 299.23 (222.48–402.47) |
| Surviving F2 | 180 | 1.60 +/− 0.45 | 0.56 (4) | 0.00 | 1455.32 (1022.71–3914.21) | 3571.45 (2099.09–6076.53) |
SRL: susceptible reference lineage*: Strain characterized by Gomez et al. [18]; N°: number of individuals used; SD: standard deviation; X 2: chi-square test; df: degrees of freedom; P: probability value; LD50: insecticide dose that killed 50 % of the population [ng/nymph); CI: confidence intervals; RR: resistance ratio