Assessing wild fish exposure to ligands for sex steroid receptors from pulp and paper mill effluents in the Biobio River Basin, Central Chile

Rodrigo Orrego, L. Mark Hewitt, Mark McMaster, Gustavo Chiang, Mauricio Quiroz, Kelly Munkittrick, Juan F. Gavilán, Ricardo Barra

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

8 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Páginas (desde-hasta)256-263
Número de páginas8
PublicaciónEcotoxicology and Environmental Safety
Volumen171
DOI
EstadoPublicada - 30 abr 2019
Publicado de forma externa

Áreas temáticas de ASJC Scopus

  • Contaminación
  • Salud pública, medioambiental y laboral
  • Salud, toxicología y mutagénesis

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