Skip to main content

Advertisement

Table 3 The course of embryonic development in Dermacentor reticulatus under the influence of permethrin

From: Sensitivity to permethrin in a Dermacentor reticulatus population from eastern Poland in laboratory study

  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
  1. N- number of D. reticulatus eggs included in six egg batches analyzed to determine the course of embryonic development and larval hatch under the influence of different permethrin concentrations.