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Drosophila melanogaster; Imidacloprid; toxicology analysis; insecticide resistance
Abstract:
Resistance to all major insecticide classes has developed in numerous and
diverse insect field populations. Imidacloprid, the worldwide most used
neonicotinoid, has been extensively applied during the last decade for the control
of different insect pests. Lately, cases of sporadic resistance also to
neonicotinoids, including Imidacloprid, have been reported. Drosophila
melanogaster is one of the most popular model organisms in biology and,
although not a pest species, a promising model system for insecticide resistance
research. In this study, we present a toxicological and karyotypic analysis of a
Drosophila mutant (MiT[w-]3R2) resistant to Imidacloprid and cross-resistant to
DDT. Karyotype analysis of polytene chromosome of MiT[w-]3R2 flies did not
identify any apparent structural change of the polytene chromosome linked with
the resistance phenotype.
