Table 2.
Low doses of compound mixtures are more active repellents than single ones
| Compound | μL equivalent of each compound per cm2 | nmole of each compound per cm2 | Mean % repellency | DEET Pr(<[t]) | Single compound Pr(<[t]) | ||
|---|---|---|---|---|---|---|---|
| DEET | 0.01 | 52 | 96.7 ± 2.6 | ||||
| CRV | 0.01 | 65 | 67.8 ± 9.0 | 6.9E-16 | |||
| CA | 0.01 | 65 | 63.2 ± 11.8 | 1.3E-14 | |||
| OCT | 0.01 | 70 | 13.8 ± 12.8 | 8.6E-25 | |||
| CRV+CA | 0.005 | 32.5 + 32.5 | 93.1 ± 6.8 | 0.02971 | CRV | CA | |
| 1.8E-05 | 3.7E-05 | ||||||
| CRV+OCT | 0.005 | 32.5 + 35 | 84.2 ± 6.6 | 1.3E-09 | CRV | OCT | |
| 0.00087 | 3.9E-09 | ||||||
| CA+OCT | 0.005 | 32.5 + 35 | 76.5 ± 6.9 | 8.0E-14 | CA | OCT | |
| 0.02423 | 8.3E-08 | ||||||
| CRV+CA+OCT | 0.0033 | 21.7 + 21.7 + 23.3 | 91.1 ± 5.2 | 0.00019 | CRV | CA | OCT |
| 4.3E-05 | 9.6E-05 | 4.5E-09 | |||||
All tests were carried out over a period of 5 min. Dichloromethane was used as a control and the numbers of landings for the experiments involving compound equivalent doses of 0.2, 0.04, and 0.01 μl/cm2 are presented in Table S2. Statistically significant differences, between antagonists and DEET control, are those with Pr(<[0.05]).
CA, cumin alcohol; CRV, carvacrol; DEET, N,N-diethyl-3-methylbenzamide; OCT, (2E,4E)-2,4-octadienal.