Vol. 11, Special Issue 11 (2022)

Author(s):
Paladugu Tejasvi, BV Patoliya, MK Ghelani and YH Ghelani

Abstract:
Studies on biology of khapra beetle, Trogoderma granarium Everts on wheat grain showed that the Pre-oviposition, oviposition and post oviposition periods were 2.83±0.75, 6.93±0.91 and 6.10±1.52 days respectively. Fecundity of female varied from 24 to 66 eggs with an average of 39.73±10.53 eggs. Incubation period varied from 4 to 9 days with an average of 5.97±1.43 days. Hatching percentage of eggs of T. granarium ranged from 53.67 to 71.33 per cent with an average of 63.78±7.11. The larva passed through five instars with mean duration of 4.97±0.85, 5.77±1.19, 6.50±1.31, 7.97±0.81, 8.57±0.94 days for 1^st, 2^nd, 3^rd, 4^th and 5th instar, respectively. Mean total duration of the larva was 33.77±2.46 days. Pupal period ranged from 6 to 9 days with an average of 7.43±0.82 days. Longevity of male ranged from 10 to 17 days with a mean of 13.70±1.97 days, while that of female was 11 to 19 days with a mean of 14.50±2.32 days.