Ecotoxicological responses of Eisenia andrei exposed in field-contaminated soils by sanitary sewage.

摘要: Abstract 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 remediating affected sites. aims current study are evaluate ecotoxicological effects on Eisenia andrei earthworms exposed subjected sources discharge investigate whether prevention values established by Brazilian legislation quality, associated with incidence chemical substances it, satisfactory enough assure quality different organisms. Earthworms’ behavior, reproduction, acetylcholinesterase activity, catalase, superoxide dismutase malondialdehyde levels were evaluated. reproduction behavior adversely affected. Increased catalase activity acted as antioxidant defense mechanism. Significantly increased lipid peroxidation inhibition have indicated cell membrane neurotransmission changes, respectively. Results confirmed that induced oxidative stress earthworms. In addition, based biochemical data analysis, integrated biomarker response (IBR) evidenced toxicity between investigated points. Finally, results effluents released into soil, without proper treatment, lead contaminant accumulation due saturation can hinder processes biological development taking place soil. shown physical-chemical analyses alone not assess since also requires adopting an approach. focused must be revised new guiding proposed.