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Assessing wild fish exposure to ligands for sex steroid receptors from pulp and paper mill effluents in the Biobio River Basin, Central Chile.
- Source :
-
Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2019 Apr 30; Vol. 171, pp. 256-263. Date of Electronic Publication: 2019 Jan 03. - Publication Year :
- 2019
-
Abstract
- Bioactive substances in the Biobio River Basin in Chile were examined by deploying Semi Permeable Membrane Devices (SPMDs) upstream and downstream of 4 pulp mill effluent discharges. Androgenic and estrogenic activity of SPMD extracts were then evaluated using in vitro fish sex steroid receptor binding assays. The results indicated the occurrence of estrogenic type compounds associated with one of the mill discharges. A significant correlation among the presence of these compounds, an increase in gonadosomatic index GSI and induction of hepatic EROD activity of two native fish species was observed. However, no significant presence of mature oocytes in female gonads was detected. Although EROD induction was observed in sites impacted by mill effluents, an increase of its activity occurred towards the downstream areas, suggesting other non-mill sources. More research is needed to understand the environmental changes in context of the new technological improvements in treatment systems to MBBR (Moving Bed Biofilm Reactor) recently implemented by the pulp mill industries.<br /> (Copyright © 2018 Elsevier Inc. All rights reserved.)
- Subjects :
- Animals
Bioreactors
Chile
Cytochrome P-450 CYP1A1 metabolism
Endocrine Disruptors analysis
Environmental Monitoring methods
Female
Fishes growth & development
Industrial Waste analysis
Industry
Ligands
Liver drug effects
Liver enzymology
Reproduction drug effects
Seasons
Water Pollutants, Chemical analysis
Water Purification methods
Endocrine Disruptors toxicity
Fishes metabolism
Industrial Waste adverse effects
Receptors, Androgen metabolism
Receptors, Estrogen metabolism
Rivers chemistry
Water Pollutants, Chemical toxicity
Subjects
Details
- Language :
- English
- ISSN :
- 1090-2414
- Volume :
- 171
- Database :
- MEDLINE
- Journal :
- Ecotoxicology and environmental safety
- Publication Type :
- Academic Journal
- Accession number :
- 30612013
- Full Text :
- https://doi.org/10.1016/j.ecoenv.2018.12.092