Table 3.
Resistance to abamectin, chlorantraniliprole and spinosad in Culex quinquefasciatus larval populations from Riyadh city
| Insecticide | Populationa | n | Concentration (µg/ml) | LC50 (95% FL) (mg/ml) | Slope ± SE | χ2 | df | P | RR |
|---|---|---|---|---|---|---|---|---|---|
| Abamectin (avermectin class) | SUS | 240 | 0.0020–0.0625 | 0.008 (0.006–0.010) | 1.42 ± 0.19 | 1.83 | 4 | 0.77 | 1.00 |
| ISH | 240 | 0.0010–0.0156 | 0.002 (0.001–0.004) | 0.94 ± 0.21 | 0.47 | 3 | 0.93 | 0.25 | |
| SUW | 240 | 0.0020–0.0625 | 0.013 (0.009–0.020) | 1.34 ± 0.21 | 2.98 | 4 | 0.56 | 1.63 | |
| GHN | 240 | 0.0020–0.0625 | 0.009 (0.007–0.012) | 1.85 ± 0.24 | 3.76 | 4 | 0.44 | 1.13 | |
| MSF | 240 | 0.0039–0.0625 | 0.005 (0.002–0.007) | 1.28 ± 0.29 | 0.50 | 3 | 0.92 | 0.63 | |
| MSN | 240 | 0.0020–0.0625 | 0.013 (0.008–0.021) | 1.01 ± 0.20 | 1.70 | 4 | 0.79 | 1.63 | |
| NKL | 240 | 0.0039–0.0625 | 0.028 (0.015–0.099) | 0.79 ± 0.25 | 0.20 | 3 | 0.98 | 3.50 | |
| WSH | 240 | 0.0039–0.0625 | 0.013 (0.009–0.018) | 1.22 ± 0.23 | 1.05 | 3 | 0.79 | 1.63 | |
| IRQ | 240 | 0.0010–0.0156 | 0.002 (0.001–0.004) | 0.78 ± 0.25 | 1.16 | 3 | 0.76 | 0.25 | |
| Chlorantraniliprole (diamide class) | SUS | 240 | 0.0020–0.0625 | 0.029 (0.020–0.046) | 1.26 ± 0.19 | 3.15 | 4 | 0.53 | 1.00 |
| ISH | 240 | 0.0078–0.125 | 0.018 (0.000–0.051) | 0.51 ± 0.24 | 0.43 | 3 | 0.93 | 0.62 | |
| SUW | 240 | 0.0020–0.0625 | 0.018 (0.014–0.024) | 1.95 ± 0.26 | 0.87 | 4 | 0.93 | 0.62 | |
| GHN | 240 | 0.0020–0.0625 | 0.030 (0.020–0.055) | 1.21 ± 0.22 | 3.81 | 4 | 0.43 | 1.03 | |
| MSF | 240 | 0.0020–0.0625 | 0.013 (0.008–0.021) | 1.01 ± 0.20 | 0.11 | 4 | 0.99 | 0.45 | |
| MSN | 240 | 0.0020–0.0625 | 0.042 (0.024–0.121) | 0.95 ± 0.21 | 0.44 | 4 | 0.98 | 1.45 | |
| NKL | 240 | 0.0039–0.0625 | 0.005 (0.000–0.011) | 0.62 ± 0.25 | 0.62 | 3 | 0.89 | 0.17 | |
| WSH | 240 | 0.0039–0.0625 | 0.012 (0.009–0.015) | 1.85 ± 0.27 | 1.52 | 3 | 0.68 | 0.41 | |
| IRQ | 240 | 0.2500–4.0000 | 0.346 (0.204–0.482) | 1.54 ± 0.26 | 0.15 | 3 | 0.99 | 11.93 | |
| Spinosad (spinosyn class) | SUS | 240 | 0.0001–0.0039 | 0.012 (0.004–0.511) | 0.61 ± 0.18 | 0.66 | 4 | 0.96 | 1.00 |
| ISH | 240 | 0.0020–0.0313 | 0.001 (0.000–0.003) | 0.71 ± 0.21 | 0.58 | 3 | 0.90 | 0.08 | |
| SUW | 240 | 0.0001–0.0039 | 0.0003 (0.0002–0.0004) | 2.25 ± 0.30 | 5.58 | 4 | 0.23 | 0.03 | |
| GHN | 240 | 0.0001–0.0039 | 0.0003 (0.0002–0.0004) | 1.97 ± 0.28 | 1.15 | 4 | 0.89 | 0.03 | |
| MSF | 240 | 0.0001–0.0039 | 0.001 (0.0006–0.0014) | 2.59 ± 0.53 | 4.82 | 4 | 0.31 | 0.08 | |
| MSN | 240 | 0.0020–0.0625 | 0.002 (0.002–0.003) | 2.68 ± 0.50 | 1.38 | 4 | 0.85 | 0.17 | |
| NKL | 240 | 0.0002–0.0039 | 0.004 (0.003–0.009) | 1.58 ± 0.33 | 2.27 | 3 | 0.52 | 0.33 | |
| WSH | 240 | 0.0002–0.0039 | 0.0002 (0.0001–0.0004) | 1.10 ± 0.28 | 0.35 | 3 | 0.95 | 0.02 | |
| IRQ | 240 | 0.0020–0.0313 | 0.006 (0.003–0.010) | 1.00 ± 0.26 | 1.11 | 3 | 0.77 | 0.50 |
aSee Table 1 for the full names of each stud population/study location