Table 2.
Repellent effect of different monoterpene doses against S. zeamais according to the percentage of repellency and preference index (PI).
| Treatment | Adults Repelled (%) (S. zeamais) | PI |
|---|---|---|
| Geranial/Geraniol (1 µL) | 66.67 ± 14.0 b/58.33 ± 8.1 | −0.33 R/−0.17 R |
| Geranial/Geraniol (2 µL) | 96.67 ± 2.58/91.67 ± 5.16 b | −0.93 R/−0.83 R |
| Geranial/Geraniol (4 µL) | 95.83 ± 4.91/77.50 ± 14.95 | −0.92 R/−0.55 R |
| Geranial/Geraniol (8 µL) | 91.67 ± 5.16/89.17 ± 9.17 | −0.83 R/−0.78 R |
| Geranial/Geraniol (16 µL) | 92.50 ± 8.16 b/90.00 ± 4.47 | −0.85 R/−0.80 R |
| Geranial/Geraniol (32 µL) | 84.17 ± 10.68/90.83 ± 7.36 | −0.68 R/−0.82 R |
| Geranial/Geraniol (64 µL) | 86.67 ± 9.3/87.50 ± 15.0 | −0.73 R/−0.75 R |
| Mean between all doses of each compound | 87.74 ± 10.3 */83.57 ± 12.1 * | --------------------- |
| Citronellal/Citronellol (1 µL) | 85.83 ± 5.48 a,b/50.00 ± 21.21 a | −0.72 R/−0.00 N |
| Citronellal/Citronellol (2 µL) | 90.98 ± 8.2 a/61.67 ± 8.7 a,b | −0.82 R/−0.23 R |
| Citronellal/Citronellol (4 µL) | 93.33 ± 12.5/80.00 ± 10.5 | −0.87 R/−0.60 R |
| Citronellal/Citronellol (8 µL) | 97.50 ± 4.18/80.00 ± 12.65 | −0.95 R/−0.60 R |
| Citronellal/Citronellol (16 µL) | 95.83 ± 5.48 b/80.83 ± 9.7 | −0.92 R/−0.62 R |
| Citronellal/Citronellol (32 µL) | 90.83 ± 10.2/74.26 ± 4.91 | −0.82 R/−0.49 R |
| Citronellal/Citronellol (64 µL) | 90.83 ± 5.48/84.17 ± 11.43 | −0.82 R/−0.68 R |
| Mean between all doses of each compound | 92.12 ± 3.9 a,*/72,99 ± 12.5 a,* | --------------------- |
| Eugenol (1 µL) | 43.33 ± 19.66 | 0.13 A |
| Eugenol (2 µL) | 75.00 ± 14.83 | −0.50 R |
| Eugenol (4 µL) | 54.17 ± 13.93 | −0.08 N |
| Eugenol (8 µL) | 73.33 ± 15.38 | −0.47 R |
| Eugenol (16 µL) | 69.17 ± 26.15 | −0.38 R |
| Eugenol (32 µL) | 77.50 ± 2.73 * | −0.55 R |
| Eugenol (64 µL) | 54.17 ± 22.23 | −0.08 N |
| Mean between all doses of each compound | 63.81 ± 13.14 * | --------------------- |
* Significantly different compared to control, test (p < 0.05); a compared to differ significantly between function isomers test (p < 0.05); b significantly different compared between position isomers test (p < 0.05); PI= Preference Index; Rating: R = repellent; N = neutral; A = attractive.