A behavioural assessment of the impact of some environmental and physiological factors on the reproductive potential ofCorcyra cephalonica (Stainton) (Lepidoptera: Pyralidae)

Abstract

Results of a study of certain specific environmental and physiological variables affecting the reproductive activity (specially egg yield and egg hatchability characteristics) of Corcyra cephalonica (Stainton) (a pyralid pest damaging a variety of stored edible commodities) are considered, from a behavioural point of view, in this contribution. The environmental cues examined are (a) light, (b) population density, (c)space availability and (d) host presence. The physiological factors tested are (a) age, (b) sex ratio, (c) nutrition and (d) time of mating. The findings obtained in this investigation provide a basis to comprehend more meaningfully the complex, delicate and varied effects produced by these factors on the reproductive performance of this moth in relation to its establishment on jowar, one of the stored products naturally infested by this pest.