Abstract
The developmental rates and corresponding changes in the biomass of life stages of Callosabruchus maculatus were studied as functions of food type and temperature. The growth rate of C. maculatus was faster when reared on stored seeds of Vigna unguiculata (cowpea) followed by V. radiata (green gram) and Dolichos lablab (bean). Larval periods were longer when C. maculatus was reared on D. lablab than when reared on V. radiata and V. unguiculata. Survival and the growth response of C. maculatus were observed at 20–35°C and were greatest at 30°C and least at 35°C. The cowpea, V. unguiculata and the environmental temperature of 30°C appear to be the optimal factors of those studied for the success of C. maculatus populations.
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