Biological effects of methoprene on the larvae of cat flea ctenocephalides felis under different conditions

ABSTRACT

The present study was carried out to determine the effects of methoprene [IGR] on Florida cat flea strain, Ctenocephalides felis on some biological aspects, e.g. mortality, duration of larval and pupal stages and emergence of adults. These experiments were undertaken at both fluctuating outdoor conditions of temperature and relative humidity [16-35.5?C and 25-98% R.H.] and at constant low temperature [9?G] and mild R.H. [73%]. The present data indicated that the methoprene had hazardious effects on the pupation of larvae and adult emergence at outdoor conditions than at the controlled conditions of constant low temp. and mild R.H. The larval mortality increased with the increase of methoprene concentration at outdoor conditions only