Life table and population parameters of Diacrisia casignetum Kollar (Lepidoptera: Arctiidae) on jute, Chorchorus capsularis (cv. Sonali; JRC-321), leaves

Abstract

The life table study of the arctiid moth, Diacrisia casignetum was conducted on young, mature and senescent jute, Chorchorus capsularis (cv. Sonali; JRC-321), leaves in the laboratory condition. The demographic parameters of D. casignetum on mature leaves were significantly differed (P young>senescent leaves, whereas total generation mortality (K) are in the reverse order. These differences in the demographic parameters are due to the variation in their phytochemical regime of respective jute leaves which may help to understand how food quality influences the life table parameters of D. casignetum for appropriate control measures at their most vulnerable stage.