عنوان مقاله [English]
In order to determine the damage and histological alteration, evaluation of the effects of materials and chemical contaminants on organisms, is important. The present study reports an overall assessment of histopathological changes in kidney and muscle of goldfish in exposure to Butachlor. The experiment was carried out in1393. For this purpose, 32 adult fish supply and 4 aquariums (8 fish per tank) were exposed to different concentrations of pollutants: sub-lethal concentrations of 0.1, 0.14 and 0.28 ml butachlor 60% per liter and a control aquarium for two weeks. Then, 6 pieces was randomly selected from each treatment, the center of both kidneies and muscle tissues were removed from the bottom of the dorsal fin. At the end of the exposing period, the muscles below the dorsal fin were removed and fixed by bouins solution, processed, sectioned at 6µ thickness and further stained by Hematoxylin-Eosin general method. Histological findings in this study indicated pathological changes such as increase in Melanomacrophage centers, glomeruli shrinkage and Bowman's space expansion, reduction or blockage of the urinary tract, glomerular capillary dilation, thickening of the glomerular basement membrane, degeneration of urinary cells and separation from cell membrane, permeation of leukocytes, bleeding of urinary tubules in kidney and necrosis. Increasing the concentrations of butachlor in different treatments led to the increased extent and severity of lesions. Based on the histological study, histopathological changes in muscle, such as changes in striation, nuclear changes, cloudy swelling, hyaline degeneration, granular degeneration and necrosis were observed. The most damage was observed at the concentration of 0.28 ml/l.
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