Studies on biology of pulse beetle, Callosobruchus chinensis (L.) on stored chickpea under laboratory conditions

Abstract

Laboratory studies on the biology of the pulse beetle, Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) on the stored chickpea revealed that the insect completed one generation from late march to first week of May, 2016. The study on biology of C. chinensis on chickpea indicated 4.15 ± 0.87 days incubation period, larval period 22.30 ± 3.06 days while pupal period was 8.65 ± 0.87. The adult life span for male was 9.30 ± 1.08 days where as for female 10.15 ± 0.98 days. The total developmental period was 32.85 ± 3.42 days. The pre-oviposition, oviposition and post-oviposition periods were 6.55 ± 0.94 hours, 8.10 ± 1.25 days and 1.85 ± 0.48 days, respectively. The average egg laid by female was 84.15. The hatchability of eggs recorded as 88 per cent and sex ratio of male and female was 1:0.88.