Seasonal variation of Fe, Mn and Cu in the tissues of two fish species from lake Qarun, Egypt

Mohamed, Abdalla; Desoky, Mohamed A. El; Gad, Nahed S.

doi:10.21767/2473-6457.10026

Cited by 2 publications

(2 citation statements)

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“…The MPI of the total combination of metals revealed that metal concentrations in gills, liver, and muscles varied seasonally, with a greater MPI for fish taken in the summer. These results are supported by Ibrahim and Omar [66] and Mohamed et al [67].…”

Section: Heavy Metal Bioaccumulation and Metal Pollution Index In Sol...supporting

confidence: 85%

Integrated use of biomarkers to assess the impact of heavy metal pollution on Solea aegyptiaca fish in Lake Qarun

et al. 2022

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Background Biomarkers have become a valuable tool in environmental assessment, since they contribute to predicting contaminants in monitoring programmes. This study aimed to investigate the toxicity of heavy metal pollution in Lake Qarun using a multibiomarker approach (morphological, oxidative stress, genotoxicity, stress proteins) in Solea aegyptiaca fish. During the winter and summer seasons, water and fish samples were collected from different locations along Lake Qarun; western and northern sectors were away from any source of pollution, while southern and eastern sectors were exposed to effluents discharged from El-Wadi and El-Bats drains, respectively. The environmental quality, as well as the accumulation of metals (Fe, Cu, Zn, Cd, Pb, Ni) in fish gills, liver, and muscles were assessed. Data were integrated using the integrated biomarker response index (IBRv2) for biomarker response interpretation. Results Water quality and bioaccumulation of heavy metals revealed a highly significant difference between samples collected from polluted sectors and those collected far from drainage water, and, seasonal differences were detected. Growth indices revealed a significant difference between sites and seasons. Fish from the western sector had the highest total antioxidant capacity in their gills, liver, and muscles, with no seasonal differences detected. However, the maximum value of malondialdehyde, protein carbonyl, 8-hydroxy-2′deoxyguanosine, metallothionein, heat shock protein 70, and DNA strand breaks in gills, liver, and muscles was detected in the polluting sectors. It revealed a significant difference between seasons, with the highest value during the winter season. According to IBRv2 results, the most effective biomarkers in this study were malondialdehyde and 8-hydroxy-2′deoxyguanosine in gills, protein carbonyl and metallothionein in the liver, heat shock protein 70 in gills and liver, and DNA strand break in gills, liver, and muscles. Conclusions This multibiomarker approach contributes to distinguishing between locations with varying levels of anthropogenic pollution, identifying the drainage water-exposed sectors as the most stressed and the winter season as the most critical time for Solea aegyptiaca owing to spawning. The biomarkers chosen are effective indicators in Solea aegyptiaca under stress, indicating the potential for environmental monitoring. Graphical Abstract

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Section: Heavy Metal Bioaccumulation and Metal Pollution Index In Sol...supporting

confidence: 85%

Integrated use of biomarkers to assess the impact of heavy metal pollution on Solea aegyptiaca fish in Lake Qarun

et al. 2022

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“…It may also provide an early warning signal in stressed organism [15]. Different concentrations of heavy metals were accumulated in the liver of T. zillii and M. capito collected from different sites of Lake Qarun [16]. In the current study, ALT and AST activities decreased significantly (p ≤ 0.05) compared to the control value in the liver of T. zillii and M. capito collected from different sites of the lake.…”

Section: Discussionmentioning

confidence: 42%

Liver Enzyme Activity of Tilapia zillii and Mugil capito Collected Seasonally from Qarun Lake, Egypt

Mohamed¹,

Gad²,

Desoky³

2019

Fish Aquac J

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Lake Qarun is an inland closed basin, located about 80 Kms south west of Cairo. It suffers from a serious water pollution problem which is due to uncontrolled solid and liquid domestic, in addition to agrochemical contamination and lack of sustainable wastewater management. The present study aimed to follow up the changes in the activities of liver enzymes (ALT, AST, and ALP) in fish (T. zillii and M. capito) Collected from different sites (east, middle and west) of the lake in four seasons. The results showed that in the two fish species at the studied sites, aspartate aminotransferase (AST) activity in the liver showed decreased values in comparison with the control fish samples collected from unpolluted site (fish farm) with percentage ranged between 10.86%-45.56%. Also, alanine aminotransferase (ALT) activity in the liver decreased significantly in comparison with the control fish samples with percentage ranged between 10.23%-54.07%. The alkaline phosphatase (ALP) activity in the liver decreased in comparison with the control fish samples with percentage ranged between 16.34%-49.54%.

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Seasonal variation of Fe, Mn and Cu in the tissues of two fish species from lake Qarun, Egypt

Cited by 2 publications

References 10 publications

Integrated use of biomarkers to assess the impact of heavy metal pollution on Solea aegyptiaca fish in Lake Qarun

Integrated use of biomarkers to assess the impact of heavy metal pollution on Solea aegyptiaca fish in Lake Qarun

Liver Enzyme Activity of Tilapia zillii and Mugil capito Collected Seasonally from Qarun Lake, Egypt

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