Detection of aggregation pheromone might engage the
same central brain structures that are activated by the
detection of common attractive food odors. If so, subsequent
behaviors (egg laying, mating) must be initiated by
different pheromones once the flies have reached the
source of aggregation pheromone. Alternatively, it is also
possible that cVA exerts its effects on ‘pheromone glomeruli’
that relay information directly to specific brain
structures that control courtship in males or egg laying
in females.