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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