Seasonal variations of heavy metals concentrations in mullet, Mugil cephalus and Liza ramada (Mugilidae) from Lake Manzala , Egypt | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 6, Volume 13, Issue 2, April 2009, Page 81-100 PDF (165.05 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2009.2034 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mohamed Bahnasawy; Abdel Aziz Khidr; Nadia Dheina | ||||
| Zoology Department, Damietta Faculty of Science, Damietta, Egypt | ||||
| Abstract | ||||
| Seasonal variations in the concentrations of four heavy metals; zinc (Zn),copper (Cu), lead (Pb) and cadmium (Cd), were determined in gills, skin and muscles of two fish species (Mugil cephalus and Liza ramada) from five locations in Lake Manzala . The average concentrations of the metals in fish tissues exhibited the following order: Zn>Cu>Pb>Cd. The statistical analysis revealed a significant effect of seasons, locations and fish tissues for all metals measured. The highest values of the metals were recorded in hot seasons (summer and spring). Fish samples from location V (Bahr El-Bakar) displayed the highest metal concentrations in their tissues. The highest concentrations of heavy metals were found in gills tissue of both fish species, while the lowest ones were recorded in muscles tissue. The values of the metals detected in the edible fish muscles were within the permissible limits. | ||||
| Keywords | ||||
| Lake Manzala; Heavy metals; Mugil cephalus; Liza ramada | ||||
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