Quantitive analysis of temperature and relative humidity on growth and development of Lasioderma serricorne Fab. in fennel seed

The complete development was found to be maximum (65.95 days) at 20°C, while minimum (46.55 days) at 30°C . The data obtained on the effect of relative humidity revealed that the insect took minimum time (53.33 days) under 70 per cent relative humidity for completing its development. The minimum duration (42.2 days) was recorded at 30°C and 70 per cent relative humidity, while maximum (69.0 days) at 20°C and 90 per cent relative humidity. The longevity of both sexes depends entirely upon temperature and humidity if adequate food is available. The survival period of male and female beetle was the longest at 20°C and 90 per cent relative humidity and shortest at 30°C and 70 per cent relative humidity