title: Testing the susceptibility of Simulium damnosum (Diptera: Simuliidae) to insecticides in the laboratory and in the field.
abstract: There are several methods for measuring the susceptibility of blackfly larvae to insecticides. In 1970 the provisional method suggested by the World Health Organization was used with a view to establishing baseline data on the susceptibility of S. damnosum larvae to insecticides; this method was found to be unsuitable. Thereafter, attempts were made to develop a reliable susceptibility testing method for S. damnosum. This report describes the method that yielded the best results in the laboratory; a second method suitable for use in the field is also described. The results from several replicates of such tests gave reasonably straight log-dosage-probit-mortality curves from which values of LC(50) could be calculated. The overall control mortality in the laboratory series of tests was about 9% and that in the field series was about 4%.
mesh_terms: D000818:Animals; D004175:Diptera / Q000187:drug effects*; D005069:Evaluation Studies as Topic; D007300:Insect Control; D007306:Insecticides / Q000494:pharmacology*; D008722:Methods
chemical_list: D007306:Insecticides