Effects of Alpha Cypermethrin on physico-chemical properties of water and the tissue structure of the cerebellum in Taeniopygia guttata

Attal, R., G. Shaghouri and M. Kassem.2019. Effects of Alpha Cypermethrin on physico-chemical properties of water and the tissue structure of the cerebellum in Taeniopygia guttata. Arab Journal of Plant Protection, 37(4): 365-371. This study aimed to determine the chemical effects of Alpha Cypermethrin (α-CYP) on physic-chemical properties of drinking water treated with three concentrations of this insecticide, in addition to the effects of drinking the contaminated water on the tissue structure of the cerebellum in Zebra Finch (Taeniopygia guttata) birds. The chemical and physical analysis of drinking water treated with gradual concentrations of this pesticide (0.250.500.75 mg/kg) showed a decrease in some environmental indicators values (oxygen in water, the saturation rate, the alkaline and carbonate content), and some increase in bicarbonate, chlorine residues and chlorine per liter compared with the drinking tap water in Aleppo city. The BOD5 20 rates and the TAC were not changed. Results obtained on birds exposed to contaminated drinking water indicated changes in birds’ behavior due to of the histological changes in the cerebellum cortex structure, especially the decrease of the granular layer density, the deforming in Purkinge cells, necrosis of the pyramidal cells, and increase of the glial cells density at the molecular layer. These results demonstrate the potential dangerous effects of this insecticide on the health of living organisms.