Ecotoxicological responses of Eisenia andrei exposed in field-contaminated soils by sanitary sewage
Autor: | Gustavo Brunetto, Delmira Beatriz Wolff, Andressa de Oliveira Silveira, Tamiris Rosso Storck, Barbara Clasen, Roberta de Moura Lisbôa, Tadeu Luis Tiecher |
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Rok vydání: | 2021 |
Předmět: |
Health
Toxicology and Mutagenesis Legislation 0211 other engineering and technologies Eisenia andrei Sewage 02 engineering and technology 010501 environmental sciences Ecotoxicology 01 natural sciences Antioxidants Superoxide dismutase Lipid peroxidation Soil chemistry.chemical_compound Malondialdehyde Animals Humans Soil Pollutants GE1-350 Oligochaeta Effluent 0105 earth and related environmental sciences 021110 strategic defence & security studies biology Superoxide Dismutase business.industry Public Health Environmental and Occupational Health Chronical trial General Medicine Catalase biology.organism_classification Pollution Soil quality Environmental sciences Behavioral testing Oxidative Stress TD172-193.5 chemistry Environmental chemistry biology.protein Environmental science Environmental Pollution business Biomarkers Brazil |
Zdroj: | Ecotoxicology and Environmental Safety, Vol 214, Iss, Pp 112049-(2021) |
ISSN: | 0147-6513 |
DOI: | 10.1016/j.ecoenv.2021.112049 |
Popis: | The disposal of untreated sanitary sewage in the soil has several consequences for human health and leads to environmental risks; thus, it is necessary investigating, monitoring and remediating the affected sites. The aims of the current study are to evaluate ecotoxicological effects on Eisenia andrei earthworms exposed to soil subjected to sources of sanitary sewage discharge and to investigate whether prevention values established by the Brazilian legislation for soil quality, associated with the incidence of chemical substances in it, are satisfactory enough to assure the necessary quality for different organisms. Earthworms’ behavior, reproduction, acetylcholinesterase activity, catalase, superoxide dismutase and malondialdehyde levels were evaluated. The reproduction and behavior of earthworms exposed to sanitary sewage were adversely affected. Increased superoxide dismutase and catalase activity acted as antioxidant defense mechanism. Significantly increased lipid peroxidation levels and acetylcholinesterase activity inhibition have indicated lipid peroxidation in cell membrane and neurotransmission changes, respectively. Results have confirmed that sanitary sewage induced oxidative stress in earthworms. In addition, based on biochemical data analysis, the integrated biomarker response (IBR) has evidenced different toxicity levels in earthworms between the investigated points. Finally, results have indicated that effluents released into the soil, without proper treatment, lead to contaminant accumulation due to soil saturation and it can hinder different processes and biological development taking place in the soil. In addition, the current study has shown that physical-chemical analyses alone are not enough to assess soil quality, since it is also requires adopting an ecotoxicological approach. Brazilian legislation focused on soil quality must be revised and new guiding values must be proposed. |
Databáze: | OpenAIRE |
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