Skip to main content

Table 3 Adulticidal activity of EOs and PBO against pyrethroid susceptible (MCM-S) and resistant (PMD-R) strains of Ae. aegypti

From: Synergy in the adulticidal efficacy of essential oils for the improvement of permethrin toxicity against Aedes aegypti L. (Diptera: Culicidae)

Essential oil dosage (μg/mg female) %mortality (mean ± SE) Adulticidal activity (95% CI, μg/mg female) χ 2 df SE Regression coefficient
LD25 LD50 LD90
Cyperus rotundus
MCM-S   6.12 10.05 17.52 0.34 3 0.16 6.22
 4.80 17.00 ± 1.58 (4.95–6.99) (9.37–10.78) (16.00–19.76)     
 6.72 29.00 ± 1.66        
 9.60 48.50 ± 2.16        
 11.52 60.50 ± 1.55        
 14.40 76.00 ± 1.41        
PMD-R   5.82 9.57 16.70 1.02 3 0.27 6.48
 4.80 18.00 ± 0.76 (4.66–6.68) (8.91–10.25) (15.34–18.68)     
 6.72 34.00 ± 1.07        
 9.60 48.00 ± 1.51        
 11.52 63.00 ± 1.16        
 14.40 81.50 ± 2.07        
Alpinia galanga
MCM-S   6.49 7.97 10.77 0.12 2 0.66 16.85
 7.12 34.50 ± 1.06 (5.64–6.98) (7.61–8.25) (10.18–11.81)     
 8.01 52.00 ± 1.06        
 8.90 65.50 ± 1.18        
 9.79 80.00 ± 1.41        
PMD-R   6.80 7.94 10.12 0.84 2 1.76 20.62
 7.12 30.00 ± 1.41 (6.25–7.16) (7.67–8.17) (9.72–10.74)     
 8.01 55.00 ± 0.71        
 8.90 69.00 ± 0.71        
 9.79 86.50 ± 1.85        
Cinnamomum verum
MCM-S   2.58 3.30 4.66 5.02 3 2.51 32.16
 2.55 23.00 ± 1.58 (2.33–2.77) (3.16–3.43) (4.44–4.98)     
 3.06 44.50 ± 2.29        
 3.57 61.00 ± 2.92        
 4.08 69.50 ± 1.59        
 4.59 92.50 ± 2.23        
PMD-R   2.50 3.22 4.59 1.96 3 0.45 31.67
 2.55 28.00 ± 1.31 (2.24–2.70) (3.08–3.35 (4.37–4.89)     
 3.06 44.00 ± 0.93        
 3.57 61.00 ± 1.16        
 4.08 75.50 ± 0.99        
 4.59 93.00 ± 2.25        
PBO
MCM-S   1.63 6.30 15.18 1.67 3 0.66 5.2
 4.24 34.50 ± 1.63 (-1.02–3.21) (5.14–7.15) (13.52–17.97)     
 6.36 53.50 ± 1.84        
 8.48 65.50 ± 2.33        
 10.60 72.75 ± 2.04        
 12.72 80.50 ± 1.20        
PMD-R   0.70 4.79 12.55 0.69 2 0.80 5.81
 4.24 44.25 ± 2.70 (-2.76–2.48) (3.24–5.72) (11.01–15.50)     
 6.36 63.50 ± 1.75        
 8.48 72.75 ± 2.90        
 10.60 82.25 ± 1.96