Paper Details

The predatory efficacy of three Pardosa spider species against American Bollworm (Helicoverpa armigera)

Tanwir Ahmad Abbas Khichi, Fatima Jalal, Naureen Aziz Qureshi, Muhammad Tariq

DOI: https://dx.doi.org/10.12692/ijb/5.10.102-110

Int. J. Biosci. 5(10), 102-110. November, 2014. (PDF)

Abstract:

The predatory efficacy was observed in the Arachnology laboratory; Department of Zoology, Wildlife and Fisheries, GC University Faisalabad. After mating ten female spiders were selected for research in separate cages. On hatching newly born spiders-lings were climbed on the back of the female spider for 4 days, and then they were separated from the mother back, and a group of seventy separated spider-lings was randomly selected. To prevent cannibalism each spider-ling was introduced into a separate cage. The selected  Pardosa  species was used as a bio-control agent of the American bollworm (Helicoverpa  armigera). The feeding potential of the Pardosa species was determined under controlled conditions against various stages of H. armigera insect pests was evaluated. The analysis of the variance regarding the feeding showed that three selected Pardosa spider species (7th& 8thInstar) had significant difference (P < 0.05) for the predation on 2nd instar of H. armigera. The three Pardosa spider species (2nd to 8th Instar) had a significant difference for the predation on 1st instar of H. armigera.