Title

Neural Control of Rhythmic Pheromone Gland Exposure in Utetheisa ornatrix (Lepidoptera: Arctiidae)

Document Type

Article

Publication Date

1987

Abstract

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.

Journal

Journal of Insect Physiology

Volume

33

Issue

3

First Page

177

Last Page

181