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
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