Toxicity of organophosphorus insecticides to diazinon-reversely-selected, pesticide-pressure-relaxed and field-resistant strains of bulb mite Rhizoglyphus robini (Acari: Acaridae)
Resource
Experimental & Applied Acarology 8(4): 243-252
Journal
Experimental & Applied Acarology
Journal Volume
8
Journal Issue
4
Pages
243-252
Date Issued
1990-04
Date
1990-04
Author(s)
Jeng-Shong Chen
Kang-Chen Lo
Abstract
Some field strains ofRhizoglyphus robini in Taiwan, developed high multi-resistance to organophosphorus insecticides including diazinon, dimethoate, fenitrothion, malathion, methyl parathion, omethoate, parathion and prothiophos. The organophosphorus resistance of bulb mites remained stable when the pesticide pressure was relaxed. Changes of the susceptibility to several organophosphorus insecticides for a strain after relaxation of selection pressure for 3 and 27 generations were compared. Since susceptible bulb mites could not be found in the field, a reverse selection for susceptibility to diazinon was designed and conducted. Although heterogeneity was observed in the progeny of the mixed populations, the susceptibility of these reversely-selected mites increased slowly. A stable and susceptible strain was obtained after 26 generations of selection.
Subjects
Methyl
Selection Pressure
Mixed Population
Malathion
Parathion
Publisher
Springer
Type
journal article