High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?

Autores: Cáceres Saez, Iris; Haro, Daniela; Blank, Olivia; Aguayo Lobo, Anelio; Dougnac, Catherine; Arredondo, Cristóbal; Cappozzo, Humberto Luis; Ribeiro, Sergio
Año de publicación: 2018
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: The study was carried out to determine Hg and Se concentrations in false killer whales stranded on the Estrecho de Magallanes, Chile, South America. Tissue samples of five mature specimens were analyzed (two females and three males). Mean Hg concentration in liver 1068 (234) μg g−1 dry weight (DW) (standard deviation in parenthesis) was markedly higher than those in kidney 272 (152) μg g−1 DW, lung 423 (325) μg g−1 DW, spleen 725 (696) μg g−1 DW, muscle 118 (94) μg g−1 DW and testicle 18.0 (2.8) μg g−1 DW. Mean Se concentration in liver, 398 (75) μg g−1 DW, was higher than those in kidney 162 (69) μg g−1 DW, lung 128 (84) μg g−1 DW, spleen 268 (245) μg g−1 DW, muscle 47 (38) μg g−1 DW and testicle 25.4 (2.1) μg g−1 DW. Positive correlations were found between Hg and Se molar concentrations in muscle, lung, spleen and kidney. Molar ratio of Se/Hg in liver, lung and muscle were <1, but those in kidney and testicle were markedly >1 suggesting a Se protection against Hg toxicity. In all the examined specimens Hg values exceeded the toxic thresholds defined for hepatic damage in marine mammals, with Se/Hg molar ratios below 1 implying limited protective action of Se. Generally, our results showed that individuals are carrying a significant burden, reflecting a high exposure to this toxic metal. This constitutes the first report on Hg and Se levels for a large subantarctic odontocete in South America region, providing insights into their contamination status and with information to the understanding of possible impacts on wild populations.
Fil: Cáceres Saez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Haro, Daniela. Universidad de Chile; Chile. Universidad Santo Tomas; Chile
Fil: Blank, Olivia. Clínica Veterinaria Timaukel; Chile. Centro de Rehabilitación de Aves Leñadura ; Chile
Fil: Aguayo Lobo, Anelio. Instituto Antártico Chileno; Chile
Fil: Dougnac, Catherine. Universidad de Chile; Chile
Fil: Arredondo, Cristóbal. Universidad de Chile; Chile
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Ribeiro, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutrónica; Argentina
Materia: ESTRECHO DE MAGALLANES
ODONTOCETES
SOUTHWESTERN SOUTH ATLANTIC OCEAN
STRANDINGS
TOXIC METAL
TRACE ELEMENTS
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/94595

Acceder

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network_name_str	CONICET Digital (CONICET)
spelling	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?Cáceres Saez, IrisHaro, DanielaBlank, OliviaAguayo Lobo, AnelioDougnac, CatherineArredondo, CristóbalCappozzo, Humberto LuisRibeiro, SergioESTRECHO DE MAGALLANESODONTOCETESSOUTHWESTERN SOUTH ATLANTIC OCEANSTRANDINGSTOXIC METALTRACE ELEMENTShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The study was carried out to determine Hg and Se concentrations in false killer whales stranded on the Estrecho de Magallanes, Chile, South America. Tissue samples of five mature specimens were analyzed (two females and three males). Mean Hg concentration in liver 1068 (234) μg g−1 dry weight (DW) (standard deviation in parenthesis) was markedly higher than those in kidney 272 (152) μg g−1 DW, lung 423 (325) μg g−1 DW, spleen 725 (696) μg g−1 DW, muscle 118 (94) μg g−1 DW and testicle 18.0 (2.8) μg g−1 DW. Mean Se concentration in liver, 398 (75) μg g−1 DW, was higher than those in kidney 162 (69) μg g−1 DW, lung 128 (84) μg g−1 DW, spleen 268 (245) μg g−1 DW, muscle 47 (38) μg g−1 DW and testicle 25.4 (2.1) μg g−1 DW. Positive correlations were found between Hg and Se molar concentrations in muscle, lung, spleen and kidney. Molar ratio of Se/Hg in liver, lung and muscle were <1, but those in kidney and testicle were markedly >1 suggesting a Se protection against Hg toxicity. In all the examined specimens Hg values exceeded the toxic thresholds defined for hepatic damage in marine mammals, with Se/Hg molar ratios below 1 implying limited protective action of Se. Generally, our results showed that individuals are carrying a significant burden, reflecting a high exposure to this toxic metal. This constitutes the first report on Hg and Se levels for a large subantarctic odontocete in South America region, providing insights into their contamination status and with information to the understanding of possible impacts on wild populations.Fil: Cáceres Saez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Haro, Daniela. Universidad de Chile; Chile. Universidad Santo Tomas; ChileFil: Blank, Olivia. Clínica Veterinaria Timaukel; Chile. Centro de Rehabilitación de Aves Leñadura ; ChileFil: Aguayo Lobo, Anelio. Instituto Antártico Chileno; ChileFil: Dougnac, Catherine. Universidad de Chile; ChileFil: Arredondo, Cristóbal. Universidad de Chile; ChileFil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Ribeiro, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutrónica; ArgentinaPergamon-Elsevier Science Ltd2018-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/94595Cáceres Saez, Iris; Haro, Daniela; Blank, Olivia; Aguayo Lobo, Anelio; Dougnac, Catherine; et al.; High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?; Pergamon-Elsevier Science Ltd; Chemosphere; 199; 5-2018; 637-6460045-6535CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0045653518302480info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2018.02.046info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:40Zoai:ri.conicet.gov.ar:11336/94595instacron: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:34982025-09-03 09:50:40.745CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
title	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
spellingShingle	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern? Cáceres Saez, Iris ESTRECHO DE MAGALLANES ODONTOCETES SOUTHWESTERN SOUTH ATLANTIC OCEAN STRANDINGS TOXIC METAL TRACE ELEMENTS
title_short	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
title_full	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
title_fullStr	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
title_full_unstemmed	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
title_sort	High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?
dc.creator.none.fl_str_mv	Cáceres Saez, Iris Haro, Daniela Blank, Olivia Aguayo Lobo, Anelio Dougnac, Catherine Arredondo, Cristóbal Cappozzo, Humberto Luis Ribeiro, Sergio
author	Cáceres Saez, Iris
author_facet	Cáceres Saez, Iris Haro, Daniela Blank, Olivia Aguayo Lobo, Anelio Dougnac, Catherine Arredondo, Cristóbal Cappozzo, Humberto Luis Ribeiro, Sergio
author_role	author
author2	Haro, Daniela Blank, Olivia Aguayo Lobo, Anelio Dougnac, Catherine Arredondo, Cristóbal Cappozzo, Humberto Luis Ribeiro, Sergio
author2_role	author author author author author author author
dc.subject.none.fl_str_mv	ESTRECHO DE MAGALLANES ODONTOCETES SOUTHWESTERN SOUTH ATLANTIC OCEAN STRANDINGS TOXIC METAL TRACE ELEMENTS
topic	ESTRECHO DE MAGALLANES ODONTOCETES SOUTHWESTERN SOUTH ATLANTIC OCEAN STRANDINGS TOXIC METAL TRACE ELEMENTS
purl_subject.fl_str_mv	https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv	The study was carried out to determine Hg and Se concentrations in false killer whales stranded on the Estrecho de Magallanes, Chile, South America. Tissue samples of five mature specimens were analyzed (two females and three males). Mean Hg concentration in liver 1068 (234) μg g−1 dry weight (DW) (standard deviation in parenthesis) was markedly higher than those in kidney 272 (152) μg g−1 DW, lung 423 (325) μg g−1 DW, spleen 725 (696) μg g−1 DW, muscle 118 (94) μg g−1 DW and testicle 18.0 (2.8) μg g−1 DW. Mean Se concentration in liver, 398 (75) μg g−1 DW, was higher than those in kidney 162 (69) μg g−1 DW, lung 128 (84) μg g−1 DW, spleen 268 (245) μg g−1 DW, muscle 47 (38) μg g−1 DW and testicle 25.4 (2.1) μg g−1 DW. Positive correlations were found between Hg and Se molar concentrations in muscle, lung, spleen and kidney. Molar ratio of Se/Hg in liver, lung and muscle were <1, but those in kidney and testicle were markedly >1 suggesting a Se protection against Hg toxicity. In all the examined specimens Hg values exceeded the toxic thresholds defined for hepatic damage in marine mammals, with Se/Hg molar ratios below 1 implying limited protective action of Se. Generally, our results showed that individuals are carrying a significant burden, reflecting a high exposure to this toxic metal. This constitutes the first report on Hg and Se levels for a large subantarctic odontocete in South America region, providing insights into their contamination status and with information to the understanding of possible impacts on wild populations. Fil: Cáceres Saez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Haro, Daniela. Universidad de Chile; Chile. Universidad Santo Tomas; Chile Fil: Blank, Olivia. Clínica Veterinaria Timaukel; Chile. Centro de Rehabilitación de Aves Leñadura ; Chile Fil: Aguayo Lobo, Anelio. Instituto Antártico Chileno; Chile Fil: Dougnac, Catherine. Universidad de Chile; Chile Fil: Arredondo, Cristóbal. Universidad de Chile; Chile Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Ribeiro, Sergio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Unidad de Actividad de Ingeniería Nuclear. Laboratorio de Análisis por Activación Neutrónica; Argentina
description	The study was carried out to determine Hg and Se concentrations in false killer whales stranded on the Estrecho de Magallanes, Chile, South America. Tissue samples of five mature specimens were analyzed (two females and three males). Mean Hg concentration in liver 1068 (234) μg g−1 dry weight (DW) (standard deviation in parenthesis) was markedly higher than those in kidney 272 (152) μg g−1 DW, lung 423 (325) μg g−1 DW, spleen 725 (696) μg g−1 DW, muscle 118 (94) μg g−1 DW and testicle 18.0 (2.8) μg g−1 DW. Mean Se concentration in liver, 398 (75) μg g−1 DW, was higher than those in kidney 162 (69) μg g−1 DW, lung 128 (84) μg g−1 DW, spleen 268 (245) μg g−1 DW, muscle 47 (38) μg g−1 DW and testicle 25.4 (2.1) μg g−1 DW. Positive correlations were found between Hg and Se molar concentrations in muscle, lung, spleen and kidney. Molar ratio of Se/Hg in liver, lung and muscle were <1, but those in kidney and testicle were markedly >1 suggesting a Se protection against Hg toxicity. In all the examined specimens Hg values exceeded the toxic thresholds defined for hepatic damage in marine mammals, with Se/Hg molar ratios below 1 implying limited protective action of Se. Generally, our results showed that individuals are carrying a significant burden, reflecting a high exposure to this toxic metal. This constitutes the first report on Hg and Se levels for a large subantarctic odontocete in South America region, providing insights into their contamination status and with information to the understanding of possible impacts on wild populations.
publishDate	2018
dc.date.none.fl_str_mv	2018-05
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/11336/94595 Cáceres Saez, Iris; Haro, Daniela; Blank, Olivia; Aguayo Lobo, Anelio; Dougnac, Catherine; et al.; High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?; Pergamon-Elsevier Science Ltd; Chemosphere; 199; 5-2018; 637-646 0045-6535 CONICET Digital CONICET
url	http://hdl.handle.net/11336/94595
identifier_str_mv	Cáceres Saez, Iris; Haro, Daniela; Blank, Olivia; Aguayo Lobo, Anelio; Dougnac, Catherine; et al.; High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?; Pergamon-Elsevier Science Ltd; Chemosphere; 199; 5-2018; 637-646 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/https://www.sciencedirect.com/science/article/pii/S0045653518302480 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2018.02.046
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 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
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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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High status of mercury and selenium in false killer whales (Pseudorca crassidens, Owen 1846) stranded on Southern South America: A possible toxicological concern?

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