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  • 1
    Publication Date: 2021-05-19
    Description: We assessed concentration of heavy metals (Cu, Fe, Hg and Zn) in the muscular tissue of benthic species Himantura gerrard and pelagic species Selar crumenophthalmus caught from the Persian Gulf during winter 2008. After biometrical measurements, the muscle tissues of 51 randomly selected samples were separated from 86 stations. Specimens were digested using the wet method and the concentrations of Cu, Fe and Zn were determined using Atomic Absorption Spectrophotometer (flame method) and also concentration of mercury was determined using Mercury Analyzer device. The mean concentration of heavy metals in muscle tissues of Himantura gerrardi were as follows: Fe: 74.78; Hg: 0.77; Zn: 875.99 and Cu: 3.5. However, these values for muscle tissues of Selar crumenophthalmus were: Fe: 25.07; Hg: 0.20; Cu: Zn: 15.54 and Zn: 2.31f.lglg dry weight. Results showed that concentration of the selected heavy metals in H gerrardi, were significantly higher than S. crumenophthalmus (P O.OS).
    Description: Published
    Keywords: Fish cartilage ; Bony fish ; Selar crumenophthalmus ; Himantura gerrardi ; Pollution ; Muscular ; Species ; Heavy metals
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.85-94
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  • 2
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    In:  http://aquaticcommons.org/id/eprint/21891 | 18721 | 2018-01-15 13:55:59 | 21891 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-04
    Description: Mercury, zinc and selenium concentrations were analyzed in the muscle and liver of 25 Whitecheek Shark (Carcharhinus dussumieri) from the coast of Bandar Abbas. The level of Hg accumulation and its interaction with Zn and Se in Whitecheek Shark were studied. Hg, Zn and Se concentrations were determined by an Advanced Mercury Analyzer (LECO, AMA 254), Atomic Absorption Spectrometer (ASS,PU 9400) and Graphite Furnace Atomic Absorption Spectrophotometry (Perkin Elmer 3030) respectively. The mean (±SD) of Hg, Zn and Se concentrations were 0.05±0.02, 0.92±0.25 and 0.13±0.05µg/g wet wt in the muscle and 1.07±0.86, 1.57±0.43 and 0.46±0.19µg/g wet wt in the liver tissues, respectively. The mean of Hg, Zn and Se in liver tissue was significantly higher than muscle tissue. Also, 64% of liver samples showed levels above the acceptable limit established by WHO and FAO. A positive correlation was found between Hg and Se concentrations in the muscle and liver tissues with weight and length variables were statistically significant. In this study, the accumulation of Se in the muscle and liver of Whitecheek shark showed a positive correlation with Hg concentration. The mean molar ratio of Se to Hg found in the muscle and liver were 6.36±1.77 and 2.74±3.61, respectively. Positive correlations between Hg and Se showed efficient detoxifying mechanism and as a result, the possibility of reduction in toxicity of mercury in both tissues via Se-Hg complexes or the binding of Hg with selenoproteins.
    Keywords: Biology ; Fisheries ; Pollution ; Mercury ; Zinc ; Selenium ; Whitecheek Shark ; Persian Gulf ; Iran ; tissues ; liver ; muscle ; Carcharhinus dussumieri
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 11-22
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  • 3
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    In:  http://aquaticcommons.org/id/eprint/23857 | 18721 | 2018-08-01 04:47:29 | 23857 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: We assessed concentration of heavy metals (Cu, Fe, Hg and Zn) in the muscular tissue of benthic species Himantura gerrardi and pelagic species Selar crumenophthalmus caught from the Persian Gulf during winter 2008. After biometrical measurements, the muscle tissues of 51 randomly selected samples were separated from 86 stations. Specimens were digested using the wet method and the concentrations of Cu, Fe and Zn were determined using Atomic Absorption Spectrophotometer (flame method) and also concentration of mercury was determined using Mercury Analyzer device. The mean concentration of heavy metals in muscle tissues of Himantura gerrardi were as follows: Fe: 74.78; Hg: 0.77; Zn: 875.99 and Cu: 3.5. However, these values for muscle tissues of Selar crumenophthalmus were: Fe: 25.07; Hg: 0.20; Cu: Zn: 15.54 and Zn: 2.31kg/g dry weight. Results showed that concentration of the selected heavy metals in H. gerrardi, were significantly higher than Selar crumenophthalmus (P 〈0.05).
    Keywords: Fisheries ; Pollution ; Pollution ; Fish cartilage ; Bony fish ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 85-94
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