Impact of different photoperiods on Dirhinus giffardii (Silv.) Parasitism on Pupae of Bactrocera correcta and Dacus ciliatus

Abstract

The study was carried out at Dipterian Research Laboratory Department of Entomology, Faculty of Crop Protection, Sindh Agriculture University Tandojam, on the impact of different photoperiods (8:16, 10:14, 24:0 and 0:24 Light & Darkness) were determined. The results were found that maximum emergence of female parasitoids 24.0±1.58 were noted on B. correcta at photoperiod 24:0 Light, followed by (10:14 L/D) 21.6±0.74, (8:16 L/D) 19.2±1.01, whereas the minimum % age of males and females 9.20±0.86, 15.4±0.92 pupae were obtained at photoperiod (0:24 Darkness), respectively. On the other hand, the D. ciliatus showed at photoperiod 24:0 Light highest ratios of male and female adults which were 15.4±0.92, and 20.0±0.70, while the lowest pupae emerged at 0:24 Darkness 6.00±0.70 and 10.8±0.80, respectively. The minimum emergence percentage was recorded at 0:24 Light for both sexes. The results further determined that D. giffardii prefer B. correcta as compared to D. ciliatus Furthermore, the analyzed data showed significant difference between different treatments (P