Table 3 The course of embryonic development in Dermacentor reticulatus under the influence of permethrin
Permethrin concentration (%) | Control N = 23,797 | |||||
|---|---|---|---|---|---|---|
0.01562 N = 12, 990 | 0.03125 N = 15,063 | 0.0625 N = 14,430 | 0.125 N = 5,982 | 0.250 N = 5,022 | ||
Normal larvae (%) | 90.25 | 97.87 | 86.46 | 0.00 | 0.84 | 98.15 |
Larvae with developmental anomalies (%) | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 |
Larvae with hatching disturbances (%) | 0.83 | 0.15 | 0.68 | 0.00 | 72.88 | 0.13 |
Dead eggs (%) | 1.02 | 0.20 | 2.14 | 100 | 2.75 | 0.07 |
Inhibition in embryogenesis (%) | 7.90 | 1.78 | 10.67 | 0.00 | 23.54 | 1.66 |
In the I stage (%) | 68.42 | 10.38 | 74.62 | 0.00 | 37.06 | 30.06 |
In the II stage (%) | 26.32 | 24.53 | 17.93 | 0.00 | 31.98 | 57.48 |
In the III stage (%) | 5.26 | 65.09 | 7.45 | 0.00 | 30.96 | 12.47 |