Suppression of Population of Tribolium castaneum by IGRS in Presence of A Predator, Xylocoris flavipes
Abstract
Insect growth regulators (IGRs), triflumuron at concentrations of 0.001, 0.05 and 0.1ppm, and diflubenzuron at concentrations of 0.005, 0.05 and 0.01ppm in presence of 2-, 4- and 8 pairs of a predator Xylocoris flavipes Reuter, significantly(p<0.001) reduced the population of Tribolium castaneum (Herbst) in 60 days exposure period. The PRC values ranged from 55.3 (0.005ppm of diflubenzuron with 2 pairs of X. flavipes) to 84.3 (0.1ppm of triflumuron with 8 pairs of X. flavipes). IGRs have reduced the predator’s population up to maximum as 56.6% compared to the control at 0.1ppm of triflumuron when 2 pairs of predators were introduced during the same exposure time.
Keywords: T. castaneum; X. flavipes; Predator; Insect Growth Regulator; Triflumuron; Diflubenzuron
DOI: http://dx.doi.org/10.4038/tare.v13i2.3134
Tropical Agricultural Research and Extension 13(2) 2010 pp.25-28
© 2011 J Ferdous, W Islam, S Parween, published by Faculty of Agriculture, University of Ruhuna
This work is licensed under the Creative Commons License.