Responses of laboratory and field strains of house fly, Musca domestica vicina Macq. to insecticides with special reference to activity of enzymes

Emara, T.E.

Journal of the Egyptian-German Society of Zoology, E 50: 55-69

2006


ISSN/ISBN: 1110-5364
Accession: 023519730

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Abstract
The changes in the susceptibility of the house fly, Musca domestica vicina toward two conventional insecticides (deltamethrin and lctaphos) and one microbial insecticide, Bacillus thuringiensis kurstaki were monitored. In comparison with the susceptible strain, the resistance of larvae and adults of field strain (based on the resistant ratio, RR values) to deltamethrin increased by 3.49- and 4.79- folds, respectively. The resistant values to lctaphos was found to be 6.69- and 4.80- folds for larvae and adults, respectively. However, larvae and adults of the field strain reported less resistance to B. thuringiensis (RR values 1.26- and 1.32- folds, respectively). The resistance reported in both larvae and adults was associated with increased esterase activity and a decrease in AChE activity. The results elaborated no positive cross-resistance between B. thuringiensis and the conventional insecticides, deltamethrin and lctaphos.