Table 1.
Effect of cyclopaldic acid, N-methyllycorine iodide, Device®SC-15 against Ae. albopictus first-instar larvae. 1
| LC50 (ppm) (LCL-HCL) 24 h |
LC90 (ppm) (LCL-HCL) 24 h |
χ2 (df) | LC50 (ppm) (LCL-HCL) 48 h |
LC90 (ppm) (LCL-HCL) 48 h |
χ2 (df) |
|---|---|---|---|---|---|
| Cyclopaldic acid | |||||
| 113.8 | 256.0 | 11.4 (28) | 40.1 | 105.1 | 30.6 (28) |
| (91.3–157.7) | (198.5–374.6) | (34.6–46.3) | (92.7–122.4) | ||
| 102.6 * | 202.5 * | 12.9 (28) * | 28.1 * | 60.3 * | 99.0 (28) * |
| (87.5–126.3) | (168.6–258.7) | (22.1–35.6) | (49.7–79.4) | ||
| N-Methyllycorine iodide | |||||
| 177.6 | 380.8 | 11.5 (23) | 78.5 | 176.2 | 23.1 (23) |
| (126.3–357.6) | (257.4–827.1) | (67.4–94.8) | (147.4–224.4) | ||
| 176.6 * | 332.5 * | 7.3 (23) * | 64.5 * | 128.8 * | 30.5 (23) * |
| (132.7–294.1) | (240.0–587.1) | (56.3–74.9) | (111.7–154.9) | ||
| Device® SC-15 | |||||
| 18.9 | 104.8 | 4.3 a (23) | |||
| (8.0–26.3) | (88.2–132.1) | ||||
| 8.8 * | 59.3 * | 12.2 a (23) * | |||
| (1.2–14.3) | (50.8–72.6) | ||||
1 Probit regression analysis (LC50 and LC90) at 95% confidence interval, at 24 and 48 h post treatment, obtained in the bioassay to evaluate the effects of cyclopaldic acid, N-methyllycorine iodide and Device® SC-15 on Ae. albopictus first-instar larvae; LC50 = lethal concentration (ppm) that kills 50% of the exposed larvae; LC90 = lethal concentration (ppm) that kills 90% of the exposed larvae; a = Since goodness-of-fit test is significant (p < 0.05), a heterogeneity factor is used in the calculation of confidence limits (CL). * Data with asterisk were obtained without correction for mortality.