Aedes aegypti (black-eyed Liverpool strain) were exposed to a sublethal dos
e (LD25) of Bacillus sphaericus and were fed to Mastomys coucha infected wi
th Brugia malayi. The development of the filarial parasite was found to be
arrested mostly at the second larval stage. The infection (P < 0.05), infec
tivity rates (P < 0.001) and LS load (P < 0.001) were found to be reduced s
ignificantly in the treated group.