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International Journal of Aquatic Biology، جلد ۳، شماره ۳، صفحات ۱۳۵-۰
عنوان فارسی
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عنوان انگلیسی Metal bioaccumulation levels in different organs of three edible fish species from the river Ravi, Pakistan
چکیده انگلیسی مقاله Metals bioaccumulation in five organs of Cirrhinus mrigala , Labeo rohita and Catla catla captured from three industrial and sewage polluted downstream sites (Shahdera = B, Sunder = C and Balloki = D) were compared with a non-industrial upstream site (Siphon = A) during high (post monsoon) and low (winter) flow seasons of river Ravi. Mean concentrations of metals were significantly higher in low flow than the high flow season. Pattern of metal accumulation in the studied organs was: Zn > Fe > Mn > Cu > Cr > Pb > Ni > Hg > Cd. Kidneys showed mostly greater metal bioaccumulation than intestines, hearts, eyes and gills. Among fish species, the highest concentrations (µg/g dry weight) of Cr (3.77), Zn (56.22), Mn (8.95), Ni (1.70) and Hg (1.60) and lowest of Pb (2.53) were detected in C. mrigala whereas Cu (7.19), Fe (62.11) and Pb (2.64) appeared higher while Zn (52.69), Mn (7.82) and Ni (1.41) with lowest concentrations in C. catla . In contrast, lower concentrations of Cd (0.15), Cr (3.16), Cu (7.06) and Fe (54.18) were recorded in L. rohita . Accumulation of the metals was significantly different in organs among the different sampling sites. Based on metals accumulation pattern, second downstream site (Sunder) identified as the most polluted site due to untreated industrial and municipal discharges. Measured elevated levels of metals concentrations in fish organs indicated potential health risks for the fish and the food chain.
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نویسندگان مقاله حفیظ عبدالله shakir | hafiz abdullah shakir
department of zoology, university of the punjab, lahore-54590, pakistan


جاوید اقبال قاضی | javed iqbal qazi
department of zoology, university of the punjab, lahore, pakistan


بینتی شکور chaudhry | abdul shakoor chaudhry
school of agriculture, food and rural development, newcastle university, newcastle upon tyne, ne1 7ru, uk.


shaukat علی | shaukat ali
department of zoology, the university of azad jammu and kashmir, muzaffarabad
نشانی اینترنتی http://npajournals.com/ijab/index.php/ijab/article/view/345
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