Two cages (one group) were observed simultaneously for 1 h after introduction of prey from behind a one-way mirror.
Several cages were designated for breeding colonies and contained females and males.
Emerged parasitoids were provided with water and spun honey in cages (25 x 25 x 25 cm).
The flies were five days old and had been starved for 24 h before the gels were introduced in to the cages.
Salts were placed in a container (10 cm widthr10 cm diameterr15 cm height) at the base of the cages.
Each pair was caged on a potted eggplant, as described above.
Hybridization can be forced in the laboratory by caging males of one species with females of the other.
The heating procedure was repeated six hours later, and the rats were then placed into individual cages for one day tranquilization.
