Physiological control of oviposition in the female desert locust Schistocerca gregaria Forsk

Abstract

Injections of haemolymph from female desert locust, Schistocerca gregaria, which were ovipositing or those that had just finished ovipositing, induced oviposition within hours in females which had ovulated; haemolymph from younger adults failed to do so. Oviposition could not be induced in locusts which had not yet ovulated. Brain extirpation led to failure of oviposition; brain implantation led to eventual oviposition.