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dc.contributor.author
Chiang, Gustavo  
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Barra, Ricardo  
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Diaz Jaramillo, Mauricio Javier  
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Rivas, Meyling  
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Bahamonde, Paulina  
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Munkittrick, Kelly R.  
dc.date.available
2018-06-26T20:46:08Z  
dc.date.issued
2015-07  
dc.identifier.citation
Chiang, Gustavo; Barra, Ricardo; Diaz Jaramillo, Mauricio Javier; Rivas, Meyling; Bahamonde, Paulina; et al.; Estrogenicity and intersex in juvenile rainbow trout (Oncorhynchus mykiss) exposed to Pine/Eucalyptus pulp and paper production effluent in Chile; Elsevier Science; Aquatic Toxicology; 164; 7-2015; 126-134  
dc.identifier.issn
0166-445X  
dc.identifier.uri
http://hdl.handle.net/11336/50162  
dc.description.abstract
Pulp and paper mill effluents (PPMEs) have been shown to increase gonad size, cause early maturation, and disrupt hormone functions in native and non-native Chilean fish. In this study, we assessed reproductive (plasma vitellogenin; VTG, gonad development) and metabolic (ethoxyresorufin-. O-deethylase activity; EROD) end points, relative liver size (LSI) and condition factor (K) of juvenile female and male rainbow trout exposed to effluents. Unlike previous studies, which have focus either on the specific effects of effluent on fish in laboratory exposures or biotic population statuses downstream of discharge sites, we simultaneously assessed the impacts of PPMES on trout using two approaches: (1) laboratory exposures of tertiary treated PPME produced from processing Eucalyptus globulus or Pinus radiata; and (2) in situ bioassay downstream of the combined discharge of the same pulp mill. Despite an increase in the average gonadosomatic index (GSI) in exposed fish, no statistical differences in gonad size between exposed and unexposed individuals was detected. However, both female and male fish exposed to effluents showed significantly higher concentrations of plasma VTG, so more in fish exposed to Eucalyptus-based effluent when compared to Pinus PPME. In addition, male fish showed intersex characteristics in all exposure assays (Eucaliptus and Pinus) and, despite the low concentration of effluent in the river (<1% [v/v]), similar responses were observed in the caged fish. Finally, EROD activity was induced in both in situ exposures and laboratory assays at the higher PPME concentration (60-85% PPME). This study confirms estrogenic effects in Chilean fish exposed to PPME and the necessity for biological effects monitoring in addition to the assessment of physical-chemical endpoints as required in current government regulations.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/  
dc.subject
Bioassay  
dc.subject
Erod  
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In Situ  
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Intersex  
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Onchorhynchus Mykiss  
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Pine And Eucalyptus Pulp And Paper Mill Effluents  
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Vitellogenin  
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Ciencias Medioambientales  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Estrogenicity and intersex in juvenile rainbow trout (Oncorhynchus mykiss) exposed to Pine/Eucalyptus pulp and paper production effluent in Chile  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-05-21T16:56:23Z  
dc.journal.volume
164  
dc.journal.pagination
126-134  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Chiang, Gustavo. University of New Brunswick; Canadá  
dc.description.fil
Fil: Barra, Ricardo. Universidad de Concepción; Chile  
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Fil: Diaz Jaramillo, Mauricio Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina  
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Fil: Rivas, Meyling. Universidad de Concepción; Chile  
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Fil: Bahamonde, Paulina. University of New Brunswick; Canadá  
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Fil: Munkittrick, Kelly R.. University of New Brunswick; Canadá  
dc.journal.title
Aquatic Toxicology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.aquatox.2015.04.025  
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info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0166445X15001381