Document Type : Research Paper
Authors
1
Associate Professor, Fisheries Department, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
2
M.Sc. Graduate, Department of Natural Resources Engineering, Faculty of Natural Resources and Environment, Islamic Azad University, Science and Research Branch, Tehran, Iran.
3
Assistant professor, Department of Natural Resources Engineering, Faculty of Natural Resources and Environment, Islamic Azad University, Science and Research Branch, Tehran, Iran.
4
Ph.D. Student, Fisheries Department, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
Abstract
The present study was conducted to investigate the bioaccumulation of copper in gill, mantle and foot of freshwater mussel, Anodonta cygnea. For this purpose, the bivalves were exposed to 125 μg/l of Cu during a period of 9 days and the Cu content were analyzed in the organs in days 3, 6 and 9. The results showed the concentration of Cu in unexposed mussels were the highest (10.35±2.12 μg Cu/g DW) and lowest (5.39±1.8 μg Cu/g DW) in the gill and foot, respectively. Cu concentrations were increased significantly (P<0.05) in all studied organs during exposure period compared to unexposed mussels. Among organs, the gill and mantle has the highest and lowest accumulation levels, respectively. Also, the highest and the lowest values of bioconcentration factor (BCF) were observed in gill and mantle, respectively. Based on the results, it can be said that Cu content in organs of A. cygnea (especially in the gills) is a proper indices of Cu pollution in the habitats of this organism.
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