Toxicity of Different Insecticides Against Feeding Behavior of Bactrocera Zonata (Diptera: Tephritidea) Under Laboratory Conditions

Abstract

The current study was carried out to evaluate the toxicity of five insecticides to 
feeding behavior and contact toxicity against Bactrocera zonata under laboratory conditions. 
The dose of each insecticide was sprayed with a handheld atomizer and allowed to air dry 
the plants for one hour. Fifty adults of B. zonata were released in each cage having mixed 
ages. Data were recorded after 24, 48, and 72 hours by present on the treated and untreated 
plant, cage, and soil. For the contact bioassays experiment, different concentrations of five 
insecticides (0.25, 0.5, 1, and 2 ppm and control treatment) in water were prepared and 
applied to each leaf, and then all immersed leaves were placed on a clean paper to dry. The 
results about the feeding behavior showed that after 24 hours the flies were present on the 
control plant (37, 35, 31, 41, and 36), treated plants (7, 8, 11, 5, and 7), cage walls and pot 
soil (5, 6, 6, 4 and 6) and several dead flies (1, 1, 2, 0 and 1) in deltamethrin, emamectin 
benzoate, trichlorfon, imdacloprid and permethrin, respectively. After 72 hours the flies were 
calculated on the control plant (27, 28, 22, 35, and 23), treated plants (8, 8, 9, 7, and 12), 
cage walls, and pot soil (7, 6, 6, 5 and 6) and several dead flies (8, 8, 13, 3 and 9), 
respectively. The results of contact toxicity of five insecticides showed that the highest 
mortality was recorded in the maximum concentration of 2 ppm (77.67, 100, 100, 100, and 
95 %) after 72 respectively. It is concluded that fruit flies can be managed at an early stage 
of flowering in fruit fly so that the economic loss of the farmers will be minimum in the end.