Studies on biology of Callosobruchus chinensis (L.) on Chickpea seed in storage

Abstract

Studies carried out in Laboratory condition on the biology of the pulse beetle, Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) on the stored chickpea at department of Entomology, T.D. college, Jaunpur revealed that the insect completed one generation from July to September, 2017. The study on biology of C. chinensis on chickpea indicate 5.16 ± 0.87 days eggs incubation period, larval+ pupal period 25.17 ± 3.86 days. The adult life span for male was 6.26 ± 1.42 days where as for female 7.53 ± 1.4 days. The total developmental period was 31.17 ± 3.89 days. The pre-oviposition, oviposition and post-oviposition periods were on an average 7.39 ± 0.97 hours, 7.76 ± 1.18 days and 1.47 ± 0.57 days, respectively. The average egg laid by female was 200. The hatchability of eggs recorded as 92 per cent and sex ratio of male and female was 1:0.96.