Neural Control of Rhythmic Pheromone Gland Exposure in Utetheisa ornatrix (Lepidoptera: Arctiidae)
The rhythmic exposure of the sex pheromone gland during calling in female Utetheisa ornatrix (L.) (Lepidoptera: Arctiidae) is under neural control. Two lines of evidence support this conclusion. (1) Bisection of the ventral nerve cord of adult females prevented calling while sham-operations had little effect. (2) Brief electrical stimulation of the ventral nerve cord in isolated abdomens elicited extended trains of regularly spaced gland exposures indistinguishable from normal calling behaviour. The coordination of calling behaviour is localized in the terminal abdominal ganglion and the peripheral structures that it innervates. Removal of the corpora allata and corpora cardiaca, neurohaemal organs previously implicated in calling control, did not affect calling behaviour.
Itagaki, Harry and Conner, W E., "Neural Control of Rhythmic Pheromone Gland Exposure in Utetheisa ornatrix (Lepidoptera: Arctiidae)" (1987). Journal of Insect Physiology 33(3): 177-181. Faculty Publications. Paper 121.
Journal of Insect Physiology