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  • Pollution  (6)
  • 1
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    Concentration of heavy metal (Cd, Pb, Ni, Hg) in muscle, gill and liver tissues of Barbus xanthopterus in Karoon River (2017)
    Details
    Publication Date: 2021-05-19
    Description: We determined bioaccumulation of heavy metals (Cd, Pb, Ni and Hg) in the muscle, gill and liver organs of Barbus xanthopterus in summer 2009 in Karoon River, south west of Iran. Gill net was used to sample 48 random size fish specimens from Karoon River downward of Ahwaz city (Shekariyeh 3 village). The tissues were extracted and the elements were determined using atomic absorption spectrophotometer. Concentrations of heavy metals Cd, Pb, Ni , Hg in muscle tissue of Barbus xanthopterus were 1.679, 2.37, 1.16, 1.29mg/kg dry wt and in gill were 2.17, 2.92, 1.44, 1.34mg/kg dry wt and in liver were 1.92, 2.79, 1.31, 1.43mg/kg dry wt, respectively. All the results were statistically significant (P 0.05). The concentrations of heavy metals were higher than standards of the World Health Organization (WHO) in the muscle tissue of Barbus xanthopterus in Karoon River.
    Description: Published
    Keywords: Concentrations ; Barbus xanthopterus ; Heavy metals ; Muscle ; Gill ; Liver ; Tissues ; Pollution
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.97-106
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  • 2
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    Biomonitoring total mercury in the Persian Gulf using rock oyster, Saccostrea cucullata (2021)
    In:  http://aquaticcommons.org/id/eprint/21711 | 18721 | 2017-11-27 14:08:10 | 21711 | University of Guilan, Faculty of Natural Resources, Iran
    Details
    Publication Date: 2021-06-29
    Description: This study is an attempt to evaluate the biomonitoring capabilities of rock oyster, Saccostrea cucullata, for mercury (Hg) pollution. The oyster and sediment samples were collected from 10 rocky habitats of Qeshm and Hormoz Islands in the Persian Gulf. The concentration of mercury in the shell and soft tissues of the oysters and sediments were analyzed using an advanced mercury analyzer. Biota-sediment accumulation factor (BSAF) was calculated based on the ratio of Hg concentrations in soft tissues to that in sediments.The results showed that the rate of mercury accumulation in the soft tissues of the oyster was significantly higher than that in its shell (P 〈 0.05). There was a significant correlation between mercury concentrations in the soft tissues and the sediments (r =0.75). According to BSAF, soft tissues of the oyster were recognized as an appropriate indicator for biomonitoring mercury. The present study generally supports the usability of soft tissue of S. cucullata as a sensitive biomonitoring organ to warn mercury pollution in the Persian Gulf.
    Keywords: Biology ; Fisheries ; Pollution ; biomonitoring ; mercury ; Persian Gulf ; rock oyster ; Saccostrea cucullata ; Iran ; pollution ; tissues
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 145-155
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  • 3
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    Concentration of heavy metal (Cd, Pb, Ni, Hg) in muscle, gill and liver tissues of Barbus xanthopterus in Karoon River (2021)
    In:  http://aquaticcommons.org/id/eprint/21810 | 18721 | 2018-01-08 09:29:45 | 21810 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-02
    Description: We determined bioaccumulation of heavy metals (Cd, Pb, Ni and Hg) in the muscle, gill and liver organs of Barbus xanthopterus in summer 2009 in Karoon River, south west of Iran. Gill net was used to sample 48 random size fish specimens from Karoon River downward of Ahwaz city (Shekariyeh 3 village). The tissues were extracted and the elements were determined using atomic absorption spectrophotometer. Concentrations of heavy metals Cd, Pb, Ni , Hg in muscle tissue of Barbus xanthopterus were 1.679, 2.37, 1.16, 1.29mg/kg dry wt and in gill were 2.17, 2.92, 1.44, 1.34mg/kg dry wt and in liver were 1.92, 2.79, 1.31, 1.43mg/kg dry wt, respectively. All the results were statistically significant (P 0.05). The concentrations of heavy metals were higher than standards of the World Health Organization (WHO) in the muscle tissue of Barbus xanthopterus in Karoon River.
    Keywords: Biology ; Chemistry ; Fisheries ; Pollution ; Pollution ; Barbus xanthopterus ; Karoon River ; Khuzestan Province ; Iran ; heavy metal ; muscle ; gill ; liver ; tissues
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 97-106
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  • 4
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    Heavy metals Cu, Zn, Cd and Pb in tissue, liver of Esox lucius and sediment from the Anzali international lagoon- Iran (2021)
    In:  http://aquaticcommons.org/id/eprint/21691 | 17408 | 2017-11-27 11:23:05 | 21691 | University of Guilan, Faculty of Natural Resources, Iran
    Details
    Publication Date: 2021-06-28
    Description: Levels of contaminants in fish are of particular interest because of the potential risk to humans consuming them. This paper examines the levels of cadmium, lead, zinc and copper in liver and muscle tissue of Esox lucius and in sediments from the Anzali international wetland in Iran. The wetland is a nursery and feeding habitat for fish species both from the lagoon and the Caspian Sea, which are consumed by the local inhabitants and others. Eleven main rivers discharge agricultural, industrial, urban and municipal wastes into this wetland. Twenty five Esox lucius specimens, with a mean weight of 804.6±121g and mean length of 430.7± 2mm were collected from the wetland by multi mesh gill nets in September and December 2007.. The age was determined from scale samples according to the annual ring structure. Average concentrations of Cd, Cu, Pb and Zn accumulated in the mid-dorsal muscle tissue (filleted and skinned) of fish were 0.001, 0.21±0.02, 0.13±0.01 and 2.55±0.18 µg.g-1, respectively. The concentrations of these metals in liver samples were Cd: 0.0014± Cu: 0.96± 0.61, Pb: 0.11 ± 0.04 and Zn: 2.46±1.5 µg.g-1. Significant positive correlations were detected between Zn and Cu with body weight, while negative correlations were found between Pb and body weight. The concentrations of Zn, Cu and Cd were below the maximum allowable concentrations for fish proposed by WHO and MAFF (safe for human consumption) but concentration of Pb exceeded the standard levels.
    Keywords: Biology ; Environment ; Fisheries ; Pollution ; Esox luci
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-8
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  • 5
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    Survey heavy metals concentration (Cu, Zn and Ni) of muscle tissue of Litoppenaeus vannamei in farms of Bushehr province (2021)
    In:  http://aquaticcommons.org/id/eprint/24897 | 18721 | 2018-11-16 18:29:05 | 24897 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-16
    Description: Heavy metals pollution directly has a negative effect on marine aquaculture such as shrimp culture. Heavy metals accumulated in the shrimp can be transported to humans through food chain. In this study, concentration of heavy metals (Cu, Zn and Ni) in muscle tissue of western white leg Shrimp (Litopenaeus vannamei) in farms of Rig, Helle and Delvar sites of Bushehr province was determined. Heavy metals concentration was measured by atomic absorption. Results showed that there was a significant difference between Zn and Ni concentration of muscle shrimp in Rig, Helle and Delvar sites. The highest concentration of copper in Delvar, zinc in Rig and nickel in Heleh was observed 20.12±1.28, 56.12±9.33 and 9.10±0.87 (μg/g DW) respectively. The comparison results of metal concentrations in muscle tissue of shrimp with FDA, WHO and FAO standards showed that the nickel content in muscle tissue is higher than the permissible level for human consumption and requires further monitoring.
    Keywords: Ecology ; Pollution ; Zn ; Ni ; Survey ; Heavy metals ; Muscle ; Tissue ; Litoppenaeus vannamei ; Aquaculture ; Marine ; Bushehr province ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 91-100
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  • 6
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    Accumulation variations of selected heavy metals in Barbus xanthopterus in Karoon and Dez Rivers of Khuzestan, Iran (2021)
    In:  http://aquaticcommons.org/id/eprint/22520 | 18721 | 2018-04-16 22:15:40 | 22520 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-06
    Description: The concentrations of Cd, Pb, Ni and Hg were determined in gill, liver and muscle of Barbus xanthopterus in down streams of Karoon and Dez Rivers during summer 2009. Heavy metal concentrations varied significantly, depending on the types of the tissue in fish species. The levels of heavy metals such as Cd, Pb, Ni and Hg in the Barbus xanthopterus of Karoon River were higher than in Barbus xanthopterus of Dez River (P〈0.05). In Karoon and Dez Rivers, the concentrations of Cd, Pb and Ni were in the sequence gill〉liver〉muscle. The concentration of Hg in Karoon River was in the sequence liver〉gill〉muscle but, in Dez River, it was in the sequence liver〉muscle〉gill. Among heavy metals (Cd, Pb, Ni and Hg), the accumulation of Pb was more than other heavy metals in fish (P〈0.05). In both rivers, the accumulation of heavy metals in muscle of fish was higher than the world health organization (WHO) standard.
    Keywords: Biology ; Fisheries ; Pollution ; Heavy metal ; Barbus xanthopterus ; Karoon ; Dez ; Khuzestan ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 372-382
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