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Seasonal variations of heavy metals in the marine bivalve Cerastoderma glaucum (Bruguière, 1789) from Temsah Lake, Ismailia, Egypt, and their relation to anti‌oxidant enzymes

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Last updated: 01 Jan 2025

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Abstract

Cerastoderma glaucum is a common bivalve in Temsah Lake. It plays important direct and/or indirect roles in the nutrient cycle. This work determined the seasonal variation of heavy metals [copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), zinc (Zn), chromium (Cr), nickel (Ni), cobalt (Co), cadmium (Cd) and lead (Pb)] in the tissue of the investigated bivalve, and the effect of these metals on the antioxidant enzymes. The results revealed that the greatest values for all studied metals in the soft tissues of C. glaucum occurred during winter and autumn seasons, while the least values were recorded during spring and summer seasons. Mg and Fe concentrations were significantly higher in all seasons when compared with all other metals. The concentrations of metals, such as  Mn, Ni, Fe, and Cr were present beyond the WHO recommended standards, especially during winter and autumn seasons. Also, this study showed highly significant increase in lipid peroxidation (MDA) activity during autumn and winter seasons that was associated with a decrease in the mean activity levels of catalase (CAT) and glutathione peroxidase (GPx) than summer season and decrease in superoxide dismutase (SOD) activity than spring season. These results related to high heavy metals concentrations, such as Cu, Fe, and Zn during the autumn season, and Mg, Mn, Cr, Co, and Ni during the winter season. Moreover, the present study recorded positive significant correlations between MDA activity and Cu, Cr and Fe concentrations, and significantly negative correlations between MDA activity and SOD activity, between CAT activity and Ni and Mn, and between GPx and Mn, Cr and Fe. So, the present study suggests that MDA and antioxidant enzymes (CAT, GPx and SOD) can be used as biomarkers to reflect the level of heavy metal pollution stress, especially Fe and Cr in the soft tissues of C. glaucum.

DOI

10.21608/ejabf.2020.90502

Keywords

Cerastoderma glaucum, Temsah Lake, Heavy metals, Lipid peroxidation, Antioxidant enzymes

Authors

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Salwa

Last Name

A. El-Saidy

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First Name

Gihan

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M. El-Khodary

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First Name

Nahla

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E. Omran

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Karolin

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K. Abd El-Aziz

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First Name

Mohamed

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H. Mona

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Volume

24

Article Issue

3

Related Issue

13076

Issue Date

2020-05-01

Receive Date

2020-03-08

Publish Date

2020-05-01

Page Start

257

Page End

270

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_90502.html

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https://ejabf.journals.ekb.eg/service?article_code=90502

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20

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Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Seasonal variations of heavy metals in the marine bivalve Cerastoderma glaucum (Bruguière, 1789) from Temsah Lake, Ismailia, Egypt, and their relation to anti‌oxidant enzymes

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Article

Created At

22 Jan 2023