Toxicological effects of heavy metals on histological alterations in various organs in Nile tilapia (Oreochromis niloticus) from freshwater reservoir
作者： Shahid Mahboob , Khalid A. Al-Ghanim , H.F. Al-Balawi , F. Al-Misned , Z. Ahmed
DOI: 10.1016/J.JKSUS.2019.07.004
关键词: Heavy metals 、 Oreochromis 、 Bioaccumulation 、 Sewage 、 Gill 、 Veterinary medicine 、 Nile tilapia 、 Biology 、 Contamination 、 Seasonality
摘要: Abstract The current study was aimed to evaluate the seasonal variation in bioaccumulation of metals (Pb, Cu and Ni) gills, kidney, liver muscle Oreochromis niloticus. Sixty fish samples (average wet body weight 460.77 ± 6.22 g) were collected from freshwater reservoir Wadi Namar Riyadh, Saudi Arabia winter, summer, spring autumn seasons. heavy assessed through atomic absorption. findings this revealed metals. In winter season minimum concentration Pb, Ni recorded while highest summer season. order Pb organs was: liver > kidney > muscle > gills liver > gills > kidney > muscle respectively. as kidney > liver > gills > muscle gills > kidney > liver > muscle crossing permissible limits suggested by WHO. Histopathological examination kidney exhibited congestion, dilation bowman capsule space, necrosis. Liver cytoplasmic vacuolation, necrosis, sinusoid dilation. It has been concluded that river is heavily contaminated due discharge untreated waste industry domestic sewage city there a dire need control increasing contamination.
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