Biological responses of white sea bream (Diplodus sargus, Linnaeus 1758) and sardine (Sardine pilchardus, Walbaum 1792) exposed to heavy metal contaminated water

Abstract

The aim of the present work was to assess, by rapid approach, the detoxification capacity and the genotoxicity caused by exposure of some marine fish to polluted waters. The fish species selected for the study: white sea bream (Diplodus sargus, Linnaeus 1758) and sardine (Sardine pilchardus, Walbaum 1792) were collected from different sites of Alexandria, El-Max bay and Bahary, in Egypt. Results of heavy metals analysis in sediment were: Al>Fe>Cr>Pb>Hg>Cd. Concerning detoxification analysis, fish collected from El-Max bay encounter the highest liver enzyme activity of Glutathione S-Transferase. Also, genotoxicity was evaluated in liver, gills and muscle of fishes collected and the results indicated that fish collected from El-Max bay has the highest levels of comets (DNA damage) when compared to the other sites selected as reference. It can be concluded from our results that the different tissues examined have alteration of level of detossification and comets as result of different degree of oxidative pollution insult. These biological responses may be considered for rapid extimation of food oxidative damage as well as for environmental quality.

Biodiversity Studies for Sustainable Lagoon: Thermophilic and Tropical Fish Species vs. Endemic Commercial Species at Mellah Lagoon (Mediterranean, Algeria)

“…Their value is that of providing ecosystem services that contribute to the well-being of the human population for many ecological, cultural, and medical uses [10]. Their stressors, as in lagoons around the world, include overexploitation [11], pollution [12][13][14], climate change, and biological invasions [5,[15][16][17][18], often co-occurring in time and space and having cumulative effects. Such ecosystem changes can have large consequences on species abundance, biodistributions, and ecosystem functioning and services [5,19,20].…”

Effects of pesticides on Chelon labrosus (Risso, 1827) evaluated by enzymatic activities along the north eastern Sicilian coastlines (Italy)

“…The uptake mechanisms of pollutants and the behaviour and responses of fish are of high ecological relevance. Although many fish species are highly mobile or migratory, fish represent optimal bioindicators of pollution of aquatic ecosystems (Van der Oost et al 2003;Guerriero et al 2018;Abdel-Gawad et al 2020). Among the various biomarkers of exposure to pesticides, for this study, the enzymatic activities of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) were selected, having both been widely used to specifically evaluate the toxic effects of pesticides, such as carbamates and organophosphates (De Domenico et al 2013;Caliani et al 2019;Sayed et al 2019;Parrino et al 2020).…”

Factors Affecting Efficiency of Biosorption of Fe (III) and Zn (II) by Ulva lactuca and Corallina officinalis and Their Activated Carbons

“…Water pollution is a prevalent form of pollution that the planet is grappling with at the moment, and is considered one of the highest risk factors for sickness, disease and biodiversity loss [2][3][4][5]. According to global databases and statistics, heavy element contamination is among the most serious of the environmental concerns due to its very detrimental effects on environmental balance, human feeding, and species sustainability [6][7][8][9], especially under climate change conditions [10][11][12]. Wastewater can contain a wide variety of heavy metals, especially waste that has resulted mainly from industrialization, such as Cu, Cr, Cd, Fe, Zn and Hg [5,[13][14][15][16][17].…”