Abstract
The results of the study of the sensitivity of fleas – vectors of the plague microbe to insecticidal preparations based on chlorpyrifos and zetacypermethrin are presented. Studies were carried out on imago fleas of three laboratory cultures: Xenopsylla cheopis Rothschild, 1903 (Siphonaptera, Pulicidae), Citellophilus tesquorum Wagner, 1898 and Nosopsyllus laeviceps Wagner, 1909, (Siphonaptera, Ceratophyllidae). During the experiment, it was found that preparations based on zetacypermethrin and chlorpyrifos were highly insecticidal for Xenopsylla cheopis (S-XC), Citellophilus tesquorum (S-CT) and Nosopsyllus laeviceps (S-NL) fleas. The diagnostic concentrations found for insecticides using sensitive populations of S-shutters (S-XC, S-CT, and S-NL) were determined. The results obtained may be in demand in practice by specialists who carry out work on the regulation of flea numbers during field and village pest control in natural plague foci in the North Caucasus. Key words: fleas, insecticide, plague, natural focus.
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