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Abstract
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The heavy metals are every kind of pollutants which create many problems in aquatic ecosystems for aquatics and human. In this study, bioaccumulation of heavy metals (Cu, Zn, and Pb) in liver and muscle samples of Yellowfin seabream (Acanthopagrus latus) were quantified (From summer 2014 until spring 2015) in Persian Gulf, Iran. The concentrations of heavy metals were determined using Atomic Absorption Spectrophotometry (PG-AA500) after dry digestion method. In this study, the impact of seasons and size (length and weight) on the concentration of Pb, Zn and Cu were studied. All statistical calculations were performed with SPSS 16.0 for windows. After securing the normality of the data, to compare the concentrations of lead, zinc and copper in the liver and muscle tissue in the different seasons of the ANOVA were used. Statistical analysis of variance showed that the accumulation of Pb, Zn and Cu in the liver and muscle were significantly different (p<0.05). This study revealed there are seasonal variation in the concentration of metals in the samples. Generally, there were significant seasonal changes in Pb, Zn and Cu concentrations in all tissues (p<0.05). For comparison of concentrations between muscle and liver tissues of the t-test was used. Muscle, generally, accumulated the lowest levels of metals in every season while the highest metal concentrations were observed in the liver (521 ±95.91 µg. g -1 Zn) in autumn. The relationship between the concentration in different tissues with biological factors, length and weight was performed using Pearson correlation test. The test One Sample T-Test was used to compare the data with standard values. The Pb accumulation in the muscles of fish were higher than permissible limit of Worid Health Organization. However, the concentrations of copper and zinc were lower than permissible limit of Worid Health Organization.
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