| effect of diflubenzuron on immature stages of haematobia irritans (l.) (diptera: muscidae) in uberlândia, state of minas gerais, brazil. | horn fly immatures were raised in media containing different concentrations of diflubenzuron in order to verify their susceptibility to this insect growth regulator (igr). the 50% and 95% lethal concentrations of diflubenzuron for the population (lc50, lc95) were determined as well as the effect of this igr on the different immature horn fly stages. the tests were performed using the progeny of adults collected in the field. the immatures were maintained in a growth chamber at 25.0 +/- 0.5oc and ... | 2002 | 12219135 |