The study accumulation of heavy metals Copper, Iron and Cobalt in different growth stages of Rainbow trout (Oncorhynchus mykiss)

Document Type : Physiology (Animal)

Authors

1 Islamic Azad University, Khuzestan Science and Research Branch, P.O.Box:1915, Ahvaz, Iran

2 Department of Fisheries, Ahvaz Branch, Islamic Azad University of Ahvaz, P.O. Box: 1915, Ahvaz, Iran

3 Young Researchers and Elite Club, Ahvaz Branch, Islamic Azad University of Ahvaz, P.O. Box: 1915, Ahvaz, Iran

Abstract

This study aims to evaluate and comparison of the accumulation of heavy metals Fe, Cu and Co in fish eggs, muscle of fingerling, fish market and male and female breeding stock farmed Oncorhynchus mykiss from Lorestan province in 2011. 75 samples by fish eggs, fingerling, fish market and male and female breeding stock were prepared from three ponds breeding center Ghezel rood of Brojerd, Lorestan province. The concentrations of heavy metals were measured by atomic absorption Perkin Elmer 4100. Data analysis was performed with the software SPSS18 and to ANOVA one way. Concentration of Fe, Cu and Co in fish egg of Oncorhynchus mykiss were 0.523±0.061, 0.733±0.152 and 0.23±0.05 mg/Kg (P<0.05). The highest and lowest of accumulation of Fe obtained in liver of female breeding stock (7.35±0.75 mg/kg) and muscle of fingerling (0.39±0.015 mg/Kg). The highest and lowest of accumulation of Cu was in liver of female breeding stock (4.33±0.83 mg/kg) and muscle of fish market (0.53±0.15 mg/Kg). The highest and lowest of accumulation of Co was in gill of female breeding stock (4.26±0.8355 mg/kg) and fish egg (0.23±0.05 mg/Kg).

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