The biology of pulse beetle, C. chinensis on stored mungbean

Abstract

Callosobruchus chinensis is internal, primary and most devastating pest of stored pulses. The fecundity of female beetle was observed with an average of 78.93 ± 4.83 eggs per female and incubation period was observed 4.33 ± 0.97 days. The larval and pupal period varied from 20 to 23 days with an average of 21.73 ± 0.96 days. The oviposition and post oviposition period was observed with an average 7.93 ± 1.27 and 2.2 ± 0.67 days, respectively. The longevity of adult female and male beetle observed wih an average 8.8 ± 1.56 and 11.33 ± 1.98 days, respectively. The total life cycle of C. chinensis was 32.73 ± 2.96 days and the sex ratio of female and male beetle was 0.83: 1.21.