Lipid accumulation and migratory flight in the Australian plague locust, <i>Chortoicetes terminifera</i> (Walker) (Orthoptera: Acrididae)

Abstract

Abstract Long distance migration by adults of Chortoicetes terminifera (Wlk.) in Australia was shown to be associated with the accumulation of fat-body lipid. Lipid was accumulated if the plant growth index was 0·3 or more within a week of the final moult; when the plant growth index was less than 0·3, there was little fat accumulation. Locusts with large amounts of fat-body lipid migrated on nights with warm strong winds, while those with little persisted.