Effect of ⁶⁰CO Gamma irradiation on the life stages of Oryzaephilus surinamensis (L.)

Gamma radiation applied at five doses from 0.1–0.5 kGy was evaluated for its effects on the eggs, larvae, pupae and adults of Oryzaephilus surinamensis (L.) maintained at 27±1ºC and 75±5% RH. The effect on hatching of egg, pupae formation, adult emergence and mortality were observed to be dose dependent. There was no hatching of egg, larval development and adult emergence at 0.5 kGy. One way ANOVA revealed their significance of variations, and SEm was 1.08, 1.72, 1.68 and 2.49 for hatching of egg, pupae formation, adult emergence and adult mortality, respectively.