BIOACCUMULATION OF SOME HEAVY METALS IN WATER AND
FISH SPECIES (Oreochromis Niloticus and Mugil Cephalus) FROM SHARKIA AND KAFER EL-SHEIKH FISH FARMS AND THEIR EFFECTS ON SOME BIOCHEMICAL MEASUREMENTS
Eman A. A. Abd El-Hameed1; Neima A. Ali2
and Amany A. Gharieb3
1Limnology Dept; 2Fish Ecology and Biology Dept; 3Physiology Dept. Central Laboratory for Aquaculture Research Center, Egypt.
|Received 20/ 9/ 2015||
Accepted 25/ 10/ 2015
In the present study, the heavy metals iron, copper, zinc, lead, and cadmium (Fe, Cu, Zn, Pb, and Cd) were determined in water and some tissues of Oreochromis niloticus and Mugil cephalus in three private fish farms, two at Sahel-El-Heseinia and San El-Hager (Sharkia governorate) and one at Kafer El-Sheikh governorate.
In addition to the study of the effects of bioaccumulation of these metals on some biochemical parameters, the distribution of heavy metals in water samples analyzed were in the order of magnitude as by Fe > Zn > Cu > Cd > Pb. Iron exceed the permissible limits according to WHO (1989). The selected organs, (liver, gills and muscles) accumulated different quantities of the metals. The distribution of that metals in selected organs analyzed were in the order of magnitude as liver > gills > muscles. The lowest concentration levels of cadmium were observed in all tissue of Oreochromis niloticus
Mugil cephalus, while, lead didn’t detect in all fish organs at all farms. No significant difference between bioaccumulation factor (BAF) of all heavy metals in organs of Oreochromis niloticus and Mugil cephalus. Different levels of heavy metals accumulated by the two fish species but iron & zinc were exceed the maximum permissible limits values of heavy metals for fish tissues as prescribed by some national and international agencies(examples). But WHO (2011) reported that there are no health based guideline-value for both Fe and Zn. Glucose, Total protein, and activities of AST and ALT had significantly different values in the serum between the studied fish.