22 Ara 2024 Pazar
Biomonitoring of the genotoxic and oxidative the effect of neemon mortality and physiological indices of Hyphantria cunea (Drury) (Lepidoptera)
Abstract :The fall web worm, Hyphantria cunea Drury (Lepidoptera: Arctiidae) native insect to North America has recently been introduced into Iran resulting in severe damage to trees and agricultural production. An experiment was conducted to examine insecticidal effect of a commercial product of neem extract, Achook® (Godrej india) containing 0.03% of effective material,Azadirachtin, against third instar larva of this pest. The first instar larvae were collected from Platanus orientalis hosts and reared on fresh mulberry leaves in growth chambers (28± 2 ºC, RH 75± 5 and 14:10 LD). Third instar larvae of next generation were used in the present study. The dipping method was used where mulberry leaves of similar sizes were dipped in the solution of neem and provided to the larvae. About 70 percent mortality was observed in treated insects after 48 h. The controls fed 51.93 more than treated larvae. The measurement of physiological factors ( cholestrol, uric acid, urea urea, protein, glucose) showed reduction in treated larvae in comparison to control insects. The possible significance of these changes is discussed
Neem, Azadirachta indica, fall web worm, Hyphantria cunea, physiology