Abstract
The study of life history parameters in various insecticide-resistant strains of the house fly, Musca domestica L. indicated statistically significant differences in larval and pupal duration and development among the various strains. Relatively non-significant difference was seen in emergence percentage (except strain 7) and sex ratio. The biotic potential of strain 171 was almost half the reference / susceptible strain. The reasons for these differences and their role in the development of insecticide resistance are discussed. Keywords: biology, biotic potential, fecundity, insecticide resistance
