Assessing the water quality in a World Heritage Site using biomarkers in top fish predators.

Autor: Santos HAGD; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil., Kitamura RSA; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil; Department of Genetics, Federal University of Paraná, PO Box 19071, 81530-980 Curitiba, PR, Brazil., Soares GDCB; Zoology Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81531-980 Curitiba, PR, Brazil., Dos Santos MP; Department of Chemistry, Federal University of Paraná, PO Box 19032, 81531-980 Curitiba, PR, Brazil., Miranda LPS; Department of Genetics, Federal University of Paraná, PO Box 19071, 81530-980 Curitiba, PR, Brazil., Mela M; Department of Cell Biology, Federal University of Paraná, PO Box 19031, 81537-990 Curitiba, PR, Brazil., Vitule JRS; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil; Department of Environmental Engineering, Federal University of Paraná, PO Box 19011, 81531-980 Curitiba, PR, Brazil., Grassi MT; Department of Chemistry, Federal University of Paraná, PO Box 19032, 81531-980 Curitiba, PR, Brazil., Cestari MM; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil; Department of Genetics, Federal University of Paraná, PO Box 19071, 81530-980 Curitiba, PR, Brazil., Padial AA; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil; Department of Botany, Federal University of Paraná, PO Box 19031, 81531-980 Curitiba, PR, Brazil., Silva de Assis HC; Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil; Department of Pharmacology, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil. Electronic address: helassis@ufpr.br.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 Jun 01; Vol. 927, pp. 172072. Date of Electronic Publication: 2024 Apr 03.
DOI: 10.1016/j.scitotenv.2024.172072
Abstrakt: The use of biomarkers in fish for biomonitoring is a valuable approach to reveal effects of human impacts on biota health. Top predator fish are effective models for monitoring human activities' impacts on aquatic ecosystems. The Guaraguaçu River is the largest river-system on coastal region of South Brazil and a World Heritage site. The river receives contaminants from disorderly urban growth, including discharges of domestic sewage and small fishery boats, particularly during the tourist season. Our study aimed to assess impact of anthropogenic activities on water quality in the Guaraguaçu River by analyzing environmental contamination biomarkers in the top fish predator Hoplias malabaricus. Fish were collected using a fyke net trap across sectors representing a gradient of anthropic impact: sector 1 - pristine; sector 2 - impacted; and sector 3 - less impacted. Water samples were collected to analyze the presence of trace elements and pesticide. Biomarkers of the antioxidant system, histopathology, genotoxicity, neurotoxicity, and concentration of trace elements were analyzed in fish tissues. In water samples Al, Fe and Mn were detected, but no pesticides were found. In fish muscle, zinc and iron were detected. Brain acetylcholinesterase activity decreased in impacted sectors, indicating neurotoxic effects. The antioxidant system increased activity in gills and liver, and damage from lipoperoxidation was observed, particularly in sector 2 when compared to sector 1, suggesting oxidative stress. Histopathological biomarkers revealed lesions in the liver and gills of fish in impacted sectors. Micronuclei, a genotoxicity biomarker, were observed in organisms from all sectors. Our results demonstrate detrimental effects of poor water quality on biota health, even when contaminants are not detected in water.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: