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Table 3 Susceptibility values (LC50 and LC90 expressed in % of active ingredient) of different European populations of Culicoides imicola to different active ingredients. Mortality was recorded 24 h after 1 h exposure to different concentrations

From: How do species, population and active ingredient influence insecticide susceptibility in Culicoides biting midges (Diptera: Ceratopogonidae) of veterinary importance?

Active ingredient Corsica, France Catalonia, Spain
No. test LC50 % LC90 % No. test LC50 % LC90 %
(n) (95 % CI) (95 % CI) (n) (95 % CI) (95 % CI)
Deltamethrin 3 0.0002 0.0008 3 0.0003 0.0023
(2,525) (0.0001–0.0002) (0.0005–0.0014) (378) (0.0002–0.0004) (0.0016–0.0037)
Alpha-cypermethrin 4 0.0008 0.0034    
(2.084) NA NA    
Permethrin 4 0.0194 0.0812 2 0.0175 0.1071
(1.562) (0.0171–0.0219) (0.0695–0.0975) (123) NA NA
Chlorpyrifos-methyl 1 0.0274 0.1273    
(122) (0.0176–0.0388) (0.0784–0.3535)    
Phoxim 2 0.1053 0.2441    
(2,207) NA NA    
Diazinon 2 0.1031 0.3424    
(1,704) NA NA    
  1. No test number of tests performed, n number of individuals tested, CI confidence interval, NA confidence interval not computed; due to a large variability in the dose/response effect