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Hmoud F. A. Al-Kaham Al-Balawi

Professor

Ex-Vice Dean (Admin.) College of science, Ex- Chairman of Zoology Department, and Ex-Chairman of Biodiversity Program

كليات العلوم
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Ecogenotoxicological studies for an early toxicity screening and monitoring in Epinephalus chlorostigma and Scamberomorus commerson

The current research work was planned to investigate genotoxicity in fish to screen and monitor the aquatic ecosystemEpinephalus chlorostigma (Hamour) was collected from the contaminated areas of “Tarut Island” (26.571°N 50.056°E) in the Arabian Gulf near Dammam, Saudi Arabia. DNA fragmentation was detected by Comet assay and Micronucleus assay. Heavy metals' water quality parameters and concentrations (Pb, Cr, Zn, Mn, Cu, Cd, Sn, and Hg) were extensively higher than the WHO permissible limits. They were more than enough to have adverse effects on fish health. The highest DNA fragmentation was observed in Echlorostigma, indicating its most heightened sensitivity to pollution. Echlorostigma showed comet head diameters 63.33 ± 2.2, 83.59 ± 3.38, and 66.28 ± 2.13px from S1-S3, respectively. Echlorostigma erythrocytes showed comet tail lengths as 16.66 ± 1.65, 16.20 ± 1.63, and 19.07 ± 1.81px from S1-S3. DNA damage was found to be 19.14 ± 1.38, 16.38 ± 1.26, and 19.95 ± 1.33 % from S1-S3, respectively. The tail moment was observed as 6.46 ± 0.79, 4.72 ± 0.69, and 7.14 ± 1.08, while the olive moment was recorded as 5.31 ± 0.51, 5.14 ± 0.52, and 6.01 ± 0.49, respectively from S1-S3. The highest frequency for single micronucleus induction, double micronucleus induction, and nuclear abnormalities was observed in E. chlorostigma collected from the polluted site of the study area. This study proposes that this fish species and novel DNA damage assays could be the best tools for toxicity screening and monitoring water bodies.

Publisher Name
elsevier
Magazine \ Newspaper
Journal of King Saud University - Science
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publications

The current research work was planned to investigate …

by Shahid Mahboob, Zubair Ahmed, H.F. Alkahem Al-Balawi, Khalid A Al-Ghanim, Promy Virik, N Al-Mulham, F. Al-Misned
2022
Published in:
elsevier
publications

The present study deals with the analysis of different indices, length weight relationship and age-length relationship of Cyprinion acinaces and Carasobarbus apoensis. The…

by Abdul Rahman MohammadAl-Otaibia, H.F. Alkahem Al-Balawi, K.A. Al-Ghanim, A. Zubair, Z. Ahmad
2022
Published in:
elsevier
publications

Specimens of Heteropneustes fossilis were treated with various levels of …

by Z.AhmadH.F.Alkahem Al-BalawiK.A.Al-GhanimF.Al-MisnedS.Mahboob
2021
Published in:
elsevier