| The multicolored Asian lady beetle, Harmonia axyridis Pallas (Coleoptera: Coccinelliadae), is a voracious predator of soft-bodied insects that has been widely used for biological control. In this work, we examined the effects of dilflubenzuron, an insect growth regulator (IGR), on a young population of H. axyridis under laboratory conditions in order to evaluate the risk of using this IGR in integrated pest management programs. Larval and pupal stages of H. axyridis were dipped 3 s in diflubenzuron dilutions (50, 100 or 200 mg L-1) or pure distilled water (control). The percentage of survival and the number of days from immature stage treated to adult emergence were evaluated. The negative effects were related to the developmental stages of H. axyridis and... |
