Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina

Autores
Arcagni, Marina; Rizzo, Andrea Paula; Juncos, Romina; Pavlin, Majda; Campbell, Linda M; Arribere, Maria Angelica; Horvat, Milena; Ribeiro Guevara, Sergio
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Despite located far from point sources of Hg pollution, high concentrations were recorded in plankton from the deep oligotrophic Lake Nahuel Huapi, located in North Patagonia. Native and introduced top predator fish with differing feeding habits are a valuable economic resource to the region. Hence, Hg and Se trophic interactions and pathways to these fish were assessed in the food web of this lake at three sites, using stable nitrogen and carbon isotopes. As expected based on the high THg in plankton, mercury did not biomagnify in the food web of Lake Nahuel Huapi, as most of the THg in plankton is in the inorganic form. As was observed in other aquatic systems, Se did not biomagnify either. When trophic pathways to top predator fish were analyzed, they showed that THg biomagnified in the food chains of native fish but biodiluted in the food chains of introduced salmonids. A more benthic diet, typical of native fish, resulted in higher [THg] bioaccumulation than a more pelagic or mixed diet, as in the case of introduced fish. Se:THg molar ratios were higher than 1 in all the fish species, indicating that Se might be offering a natural protection against Hg toxicity.
Fil: Arcagni, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Rizzo, Andrea Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Juncos, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Pavlin, Majda. Institute Jožef Stefan; Eslovenia
Fil: Campbell, Linda M. Saint Mary's University; Canadá
Fil: Arribere, Maria Angelica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Horvat, Milena. Institute Jožef Stefan; Eslovenia
Fil: Ribeiro Guevara, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Materia
Bioaccumulation
Mercury
Oligotrophic Lake
Selenium
Stable Isotopes
Trophodynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/65566
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/65566
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, ArgentinaArcagni, MarinaRizzo, Andrea PaulaJuncos, RominaPavlin, MajdaCampbell, Linda MArribere, Maria AngelicaHorvat, MilenaRibeiro Guevara, SergioBioaccumulationMercuryOligotrophic LakeSeleniumStable IsotopesTrophodynamicshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Despite located far from point sources of Hg pollution, high concentrations were recorded in plankton from the deep oligotrophic Lake Nahuel Huapi, located in North Patagonia. Native and introduced top predator fish with differing feeding habits are a valuable economic resource to the region. Hence, Hg and Se trophic interactions and pathways to these fish were assessed in the food web of this lake at three sites, using stable nitrogen and carbon isotopes. As expected based on the high THg in plankton, mercury did not biomagnify in the food web of Lake Nahuel Huapi, as most of the THg in plankton is in the inorganic form. As was observed in other aquatic systems, Se did not biomagnify either. When trophic pathways to top predator fish were analyzed, they showed that THg biomagnified in the food chains of native fish but biodiluted in the food chains of introduced salmonids. A more benthic diet, typical of native fish, resulted in higher [THg] bioaccumulation than a more pelagic or mixed diet, as in the case of introduced fish. Se:THg molar ratios were higher than 1 in all the fish species, indicating that Se might be offering a natural protection against Hg toxicity.Fil: Arcagni, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; ArgentinaFil: Rizzo, Andrea Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; ArgentinaFil: Juncos, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; ArgentinaFil: Pavlin, Majda. Institute Jožef Stefan; EsloveniaFil: Campbell, Linda M. Saint Mary's University; CanadáFil: Arribere, Maria Angelica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; ArgentinaFil: Horvat, Milena. Institute Jožef Stefan; EsloveniaFil: Ribeiro Guevara, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; ArgentinaPergamon-Elsevier Science Ltd2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/65566Arcagni, Marina; Rizzo, Andrea Paula; Juncos, Romina; Pavlin, Majda; Campbell, Linda M; et al.; Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina; Pergamon-Elsevier Science Ltd; Chemosphere; 166; 1-2017; 163-1730045-6535CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653516312802info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2016.09.085info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:13Zoai:ri.conicet.gov.ar:11336/65566instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:44:13.985CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
title Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
spellingShingle Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
Arcagni, Marina
Bioaccumulation
Mercury
Oligotrophic Lake
Selenium
Stable Isotopes
Trophodynamics
title_short Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
title_full Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
title_fullStr Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
title_full_unstemmed Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
title_sort Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina
dc.creator.none.fl_str_mv Arcagni, Marina
Rizzo, Andrea Paula
Juncos, Romina
Pavlin, Majda
Campbell, Linda M
Arribere, Maria Angelica
Horvat, Milena
Ribeiro Guevara, Sergio
author Arcagni, Marina
author_facet Arcagni, Marina
Rizzo, Andrea Paula
Juncos, Romina
Pavlin, Majda
Campbell, Linda M
Arribere, Maria Angelica
Horvat, Milena
Ribeiro Guevara, Sergio
author_role author
author2 Rizzo, Andrea Paula
Juncos, Romina
Pavlin, Majda
Campbell, Linda M
Arribere, Maria Angelica
Horvat, Milena
Ribeiro Guevara, Sergio
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Bioaccumulation
Mercury
Oligotrophic Lake
Selenium
Stable Isotopes
Trophodynamics
topic Bioaccumulation
Mercury
Oligotrophic Lake
Selenium
Stable Isotopes
Trophodynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Despite located far from point sources of Hg pollution, high concentrations were recorded in plankton from the deep oligotrophic Lake Nahuel Huapi, located in North Patagonia. Native and introduced top predator fish with differing feeding habits are a valuable economic resource to the region. Hence, Hg and Se trophic interactions and pathways to these fish were assessed in the food web of this lake at three sites, using stable nitrogen and carbon isotopes. As expected based on the high THg in plankton, mercury did not biomagnify in the food web of Lake Nahuel Huapi, as most of the THg in plankton is in the inorganic form. As was observed in other aquatic systems, Se did not biomagnify either. When trophic pathways to top predator fish were analyzed, they showed that THg biomagnified in the food chains of native fish but biodiluted in the food chains of introduced salmonids. A more benthic diet, typical of native fish, resulted in higher [THg] bioaccumulation than a more pelagic or mixed diet, as in the case of introduced fish. Se:THg molar ratios were higher than 1 in all the fish species, indicating that Se might be offering a natural protection against Hg toxicity.
Fil: Arcagni, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Rizzo, Andrea Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Juncos, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Pavlin, Majda. Institute Jožef Stefan; Eslovenia
Fil: Campbell, Linda M. Saint Mary's University; Canadá
Fil: Arribere, Maria Angelica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
Fil: Horvat, Milena. Institute Jožef Stefan; Eslovenia
Fil: Ribeiro Guevara, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutróica; Argentina
description Despite located far from point sources of Hg pollution, high concentrations were recorded in plankton from the deep oligotrophic Lake Nahuel Huapi, located in North Patagonia. Native and introduced top predator fish with differing feeding habits are a valuable economic resource to the region. Hence, Hg and Se trophic interactions and pathways to these fish were assessed in the food web of this lake at three sites, using stable nitrogen and carbon isotopes. As expected based on the high THg in plankton, mercury did not biomagnify in the food web of Lake Nahuel Huapi, as most of the THg in plankton is in the inorganic form. As was observed in other aquatic systems, Se did not biomagnify either. When trophic pathways to top predator fish were analyzed, they showed that THg biomagnified in the food chains of native fish but biodiluted in the food chains of introduced salmonids. A more benthic diet, typical of native fish, resulted in higher [THg] bioaccumulation than a more pelagic or mixed diet, as in the case of introduced fish. Se:THg molar ratios were higher than 1 in all the fish species, indicating that Se might be offering a natural protection against Hg toxicity.
publishDate 2017
dc.date.none.fl_str_mv 2017-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/65566
Arcagni, Marina; Rizzo, Andrea Paula; Juncos, Romina; Pavlin, Majda; Campbell, Linda M; et al.; Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina; Pergamon-Elsevier Science Ltd; Chemosphere; 166; 1-2017; 163-173
0045-6535
CONICET Digital
CONICET
url http://hdl.handle.net/11336/65566
identifier_str_mv Arcagni, Marina; Rizzo, Andrea Paula; Juncos, Romina; Pavlin, Majda; Campbell, Linda M; et al.; Mercury and selenium in the food web of Lake Nahuel Huapi, Patagonia, Argentina; Pergamon-Elsevier Science Ltd; Chemosphere; 166; 1-2017; 163-173
0045-6535
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653516312802
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2016.09.085
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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