Vol. 5, Issue 5 (2017)
Bioaccumulation of selected metals and histopathological alterations in tissues of Bothriocephalus acheilognathi from Dal Lake, Kashmir valley
Author(s): Asifa Wali, Masood-ul Hassan Balkhi, Rafia Maqbool and MM Darzi
Abstract: The concentration of some heavy metals (Cu, Zn, Co, Ni, Mn, Cr, Al, Fe, Ca, Cd, Pb and Hg) in water samples, parasites and tissues of Schizothorax niger obtained from four sites (Dalgate, Saidakadal, Hazratbal and Telbal) of Dal Lake was investigated (atomic absorption spectrophotometry) with emphasis on the histological alterations in these organs. The overall concentrations of different heavy metals in water body showed significant variations both season and location wise. In Dal Lake the concentrations of Co, Ni, Mn, Cr, Fe and Cd were higher than the permissible limits. Pb and Hg were below detection levels while Cu and Zn were recorded from Dal Lake. It was found that the metals were accumulated in different tissues of both fish by various levels, where, the non-edible parts accumulated more metals than the edible muscles. In Dal Lake the concentrations of copper (1.25 µg/g), zinc (5.69 µg/g) and iron (29.3 µg/g) were maximum in the muscles of infected fishes which were still lower than the Maximum Limit recommended by WHO/ FEPA/IAEA-407 whereas on the other the concentration of nickel (0.80 µg/g), manganese (1.69 µg/g), cadmium (0.78 µg/g), chromium (2.86 µg/g) and aluminium (2.99 µg/g) were higher than the permissible limits. Several histopathological alterations, including vacuolar degeneration with focal areas of necrosis in liver, proliferation in the epithelium of gill filaments and fusion of secondary lamellae, severe degenerative and necrotic changes in the intestinal mucosa and seminiferous tubules, degeneration and atrophy in cardiac muscle fibers and degeneration in muscle bundles were observed in the studied tissues of both fish as a result of the accumulated metals.
Pages: 516-524 | 882 Views 44 Downloads
download (7652KB)
How to cite this article:
Asifa Wali, Masood-ul Hassan Balkhi, Rafia Maqbool, MM Darzi. Bioaccumulation of selected metals and histopathological alterations in tissues of Bothriocephalus acheilognathi from Dal Lake, Kashmir valley. Int J Chem Stud 2017;5(5):516-524.
