Lack of humoral control in calling and pheromone release by brain,corpora cardiaca,corpora allata and ovaries of the female gypsy moth, Lymantria dispar (L.)

Investigations into the physiological regulation of calling behaviour and pheromone release by the adult female gypsy moth, Lymantria dispar, showed that the brain, corpora cardiaca, corpora allata and ovaries play no significant endocrine role for either calling behaviour or pheromone release. Removal of corpora allata, corpora cardiaca-corpora allata complex and ovaries from last-instar larvae had no effect on calling behaviour nor on the pheromone release in the resulting moths. Severing the suboesophageal connectives had no effect on calling, but effectively eliminated pheromone release. Since severing nerves should not remove humoral output from the brain, the regulation on pheromone release appears neural.