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Table 2 Susceptibility values (LC50 and LC90 expressed in % of active ingredient) of different populations of Culicoides obsoletus 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 C. obsoletus (Corrèze, France) C. obsoletus (Mallorca, Spain)
No. test LC50 % LC90 % No. test LC50 % LC90 %
(n) (95 % CI) (95 % CI) (n) (95 % CI) (95 % CI)
Deltamethrin 3 0.0001 0.0008 4 0.0005 0.0032
  (1,491) (0.0000–0.0002) (0.0005–0.0018) (382) (0.0002–0.0011) (0.0013–0.1246)
Alpha-cypermethrin 3 0.0012 0.0102    
  (502) NA NA    
Permethrin 2 0.0207 0.0668 4 0.0147 0.0840
  (527) (0.0188–0.0229) (0.0565–0.0822) (131) (0.0101–0.0203) (0.0502–0.2445)
Chlorpyrifos-methyl 5 0.0182 0.0769    
  (615) (0.0142–0.0222) (0.0632–0.0980)    
Phoxim 6 0.0273 0.1177    
  (763) (0.0238–0.0312) (0.0944–0.1564)    
Diazinon 2 0.0848 0.2944    
  (917) 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