Division of Molecular Entomology, ICAR-National Bureau of Agricultural Insect Resources, H.A. Farm Post, Bellary road, Hebbal, Bengaluru-560 024, India
Online published on 24 March, 2017.
In the present study, it was aimed to determine the acetylcholinesterase (AchE) activity of an insecticide-susceptible and four field populations of N. lugens with low to moderate levels of resistance to acephate. One-way ANOVA followed by Bonferroni multiple comparison test showed that AchE activities of Warangal and Tiruchirappalli field populations were significantly different (P <0.05). The AchE activity ratios were 1.02, 1.22, 2.20 and 1.49 for the Nellore, Gangavati, Warangal and Tiruchirappalli field populations, respectively. However, there was no significant correlation between AchE activity and acephate resistance in the studied populations. Further studies involving AchE insensitivity, may enable to elucidate acephate resistance mechanism in N. lugens.
Acephate resistance, Acetylcholinesterase activity, Nilaparvata lugens
