[Ontogenetic changes in the reaction to the effects of pesticides in sensitive and resistant strains of the spider mite (Tetranychus urticae Koch)].
The susceptibility to pesticide was studied in the resistant and sensitive strains of the red spider mite Tetranychus urticae Koch. at different developmental stages. A phase of the maximum sensitivity to the effect of drugs was determined in the mite ontogenesis which coincides with the stage of the spiracle protrusion. Changes in the range of stage susceptibility were followed with respect to the acquisition of resistance against acaricides. 3 types of the ontogenetic reaction of resistant specimens are described which appear to be related to the differences in the physiological mechanisms of resistance against the drugs of different chemical groups.
D000367:Age Factors; D000818:Animals; D007305:Insecticide Resistance; D008925:Mites
Ontogeneticheskie izmeneniia reaktsii na vozdeĭstvie pestitsidov v chuvstvitel'noĭ i ustoĭchivykh rasakh pautinnogo kleshcha Tetranychus urticae Koch