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Romanian Journal of Biology - Zoology
ROMANIAN ACADEMY |
HISTOPATHOLOGICAL ALTERATIONS IN THE DIGESTIVE YSTEM OF RUTILUS FRISII KUTUM (KAMENSKY, 1901) FRY AFTER EXPOSURE TO ATRAZINE HERBICIDE
ZAHRA KHOSHNOOD
Abstract:
To investigate the histopathological effects of a most wildly used herbicide, atrazine in Caspian kutum fry, Rutilus frisii kutum, fish (3.5 cm TL and 2.6 g BW) were exposed to a sublethal concentration of 12.47 mg/L (1/2 LC50) for 96h. Acute exposure of R. frisii kutum fry to atrazine causes some alterations 1/2 in the digestive system and the liver of the fry. The most significant alterations were necrosis of intestinal epithelial cells at the apical and basal parts, detaching of epithelial cells from the basement membrane, degeneration of the apical sides of the intestinal folds, hyperplasia in intestinal epithelial cells and hyperplasia and hypertrophy of the goblet cells of the intestine. In hepatic tissue the most significant alterations were dilution of sinusoids, necrosis, vacuolation and increasing the intercellular spaces in hepatocytes, picnotic nuclei of hepatocytes and degeneration of adipose tissue of the liver. Atrazine could affect the nutritional ability and osmoregulation process of the fry by causing histopathological changes in the digestive system even at sublethal concentration and acute exposure.
Citation:
ZAHRA KHOSHNOOD, 2017. HISTOPATHOLOGICAL ALTERATIONS IN THE DIGESTIVE YSTEM OF RUTILUS FRISII KUTUM (KAMENSKY, 1901) FRY AFTER EXPOSURE TO ATRAZINE HERBICIDE, Romanian Journal of Biology - Zoology, 62(1-2): 73–86.
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