The Impact of Sublethal Concentrations of Treated Leachate on Nile tilápia (Oreochromis niloticus)

The Impact of Sublethal Concentrations of Treated Leachate on Nile tilápia (Oreochromis niloticus)

The objective of this study was to evaluate the impact of sublethal concentrations of treated landfill leachate on Oreochromis niloticus individuals after exposure for 96 h, by assessing biochemical, genotoxic and immunologic biomarkers. Among biochemical biomarkers (activities of ALT, AST and GST e...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology Vol. 102; no. 4; pp. 519 - 524
Main Authors: Gallão, Michel, Gnocchi, Karla G., Carvalho, Luciano R., Silva, Bruno F., Barbosa, Andressa N., Chippari-Gomes, Adriana R.
Format: Journal Article
Language:English
Published: New York Springer US 01-04-2019
Springer Nature B.V
Subjects:
Acute toxicity
Aquatic environment
Aquatic Pollution
Bioassays
Biomarkers
Comet assay
Damage
Damage detection
Deoxyribonucleic acid
DNA
DNA damage
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Fish
Genotoxic chemicals
Genotoxicity
Landfill
Landfills
Leachates
Leukocytes
Micronuclei
Oreochromis niloticus
Pollution
Soil Science & Conservation
Toxicity
Waste disposal sites
Waste treatment
Waste Water Technology
Wastewater treatment
Water Management
Water Pollution Control
Water pollution treatment
Biomarkers
Fish
Contaminants
Acute toxicity
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Summary:The objective of this study was to evaluate the impact of sublethal concentrations of treated landfill leachate on Oreochromis niloticus individuals after exposure for 96 h, by assessing biochemical, genotoxic and immunologic biomarkers. Among biochemical biomarkers (activities of ALT, AST and GST enzymes), the treated landfill leachate did not cause significant alterations on O. niloticus and did not significantly affect leukocytes used as an immunologic biomarker. On the other hand, treated leachate induced genotoxic damages, since an increase in erythrocytic micronuclei and in DNA damage (comet assay) were observed in fish exposed to all treatment (2, 4 and 6 mL L −1 ). Acute toxicity of treated leachate in O. niloticus caused only genotoxic changes in blood cells, showing that micronuclei and comet assay, together, are effective biomarkers in determining the acute toxicity of treated leachate in aquatic environments. This work also shows that leachate, although treated, caused some damages to O. niloticus , which indicates the employed treatment was not efficient in eliminating all genotoxic substances from the leachate.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-019-02566-5