title: The use of biotic and abiotic components of Red Sea coastal areas as indicators of ecosystem health.
abstract: A biomonitoring study was conducted using some biotic (Pomadasys hasta and Lutjanus russellii fish) and abiotic (water and sediment) components of the Red Sea coast of Hodeida, Yemen Republic along two polluted sites (Al-Dawar beach and Urj village) in comparison to a reference site (Al-Nukhailah beach). The studied fish biomarkers included hepatosomatic index (HSI), condition factor (K), scaled mass index (SMI), catalase, glutathione-S-transferase (GST), malondialdehyde (MDA), total protein and albumin. In addition, metals (Fe, Cu, Zn, Pb and Cd) concentrations in water and sediment were measured and sediment pollution assessment was carried out using contamination factor (CF), geoaccumulation index (Igeo), pollution load index (PLI) and enrichment factor (EF). The studied metals concentration in water and sediment samples showed significant increase among the polluted sites in comparison to the reference site. Sediment pollution assessment generally confirmed that Urj village was the most contaminated site followed by Al-Dawar beach. Catalase, GST and MDA proved to be the most responsive biomarkers with increased values of GST and MDA at sites influenced by agricultural, urban and industrial activities while catalase, HSI, K, SMI, total protein and albumin showed the opposite trend. This study recommends monitoring of sediment Igeo and EF values as well as SMI, catalase, GST and MDA as sensitive indicators of different anthropogenic activities and their effects on aquatic ecosystems under complex and different gradients of metal pollution. In addition, P. hasta proved to be more sensitive towards the detected pollution condition.
authors.affiliation: Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt.|Department of Biology, Faculty of Science, Taif University, Taif, Saudi Arabia.
authors.forename: Wael A
authors.initials: WA
authors.lastname: Omar
authors.affiliation: Department of Biology, Faculty of Science, Taiz University, Taiz, Yemen Republic. thelastdh@yahoo.com.
authors.forename: Yousef S
authors.initials: YS
authors.lastname: Saleh
authors.affiliation: Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt.
authors.forename: Mohamed-Assem S
authors.initials: MA
authors.lastname: Marie
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000032:analysis; D001798:Blood Proteins / Q000378:metabolism; D001823:Body Composition / Q000187:drug effects; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis; D019156:Indian Ocean; D019216:Metals, Heavy / Q000032:analysis*; D018384:Oxidative Stress / Q000187:drug effects; D010473:Perciformes / Q000378:metabolism*; D012623:Seawater / Q000032:analysis*; D013045:Species Specificity; D014874:Water Pollutants, Chemical / Q000032:analysis*; D060753:Water Quality; D015006:Yemen
chemical_list: D015415:Biomarkers; D001798:Blood Proteins; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Lutjanus russellii; Marine pollution; Metals; Pomadasys hasta; Red Sea; Sediment quality