journal of kerbala university

Carried out a status study of insect resistance management Musca domestica Linnaeus (1758) domestic flies in the Holy City of Karbala, to assess the impact of the exchange between Insect growth regulators (IGRs) (Match 5% EC, Trigard 50% WP) and its role in inhibiting resistance and stability as the results came out that use of the exchange mechanism between growth regulators and four generations was effective in inhibiting resistance in these strains, as reduse of resistance ratio LD50 (2.72) mg/l , (1.83) fold in the first generation when a treated alter with Trigard insecticide resistant strain of growth to Match the LD50 values (1.74) mg/l ratio amounted to resistance (1.16) fold in the 4th generation as well as lower LD50 value of (4.36) mg/l in the first generation when the insect growth regulator, transaction Match for the resistant strain Trigard resistance accounted for (4.00) fold the LD50 values and resistance ratio (1.45) mg/l (1.33) folds in the 4th consecutive generation We conclude from the results that the exchange mechanism between IGRs are important in resistance management programs to delay them or their retreat to Susceptibility.