Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region
Mercury (Hg) is a pervasive environmental contaminant that accumulates in the organs and tissues of seabirds at concentrations capable of causing acute or long-term adverse health effects. In this study, Hg concentrations in Adélie Penguin (Pygoscelis adeliae) egg membranes and chick feathers served...
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ftconicet:oai:ri.conicet.gov.ar:11336/151928 2023-10-09T21:45:03+02:00 Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region McKenzie, Ashley C. Silvestro, Anahí Mariel Marti, Lucas J. Emslie, Steven Douglas application/pdf http://hdl.handle.net/11336/151928 eng eng Society of Environmental Toxicology and Chemistry info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/etc.5166 info:eu-repo/semantics/altIdentifier/doi/10.1002/etc.5166 http://hdl.handle.net/11336/151928 McKenzie, Ashley C.; Silvestro, Anahí Mariel; Marti, Lucas J.; Emslie, Steven Douglas; Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 40; 10; 7-2021; 2791-2801 0730-7268 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ MERCURY BIOACCUMULATION BIOMONITORING EGG MEMBRANE FEATHER STABLE ISOTOPE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1002/etc.5166 2023-09-24T20:09:09Z Mercury (Hg) is a pervasive environmental contaminant that accumulates in the organs and tissues of seabirds at concentrations capable of causing acute or long-term adverse health effects. In this study, Hg concentrations in Adélie Penguin (Pygoscelis adeliae) egg membranes and chick feathers served as a proxy for Hg bioavailability in the marine environment surrounding the northern Antarctic Peninsula. Stable isotopes were measured in conjunction with Hg to infer information regarding feeding habits (δ15N, diet/trophic level; δ13C, foraging habitat). Hg concentrations were low relative to toxicity benchmark values associated with adverse health effects in birds and ranged between 0.006 ? 0.080 µg g-1 dry weight (n = 65) in egg membranes and 0.140 ? 1.05 µg g-1 fresh weight (n= 38) in feathers. Egg membrane δ15N signatures suggested females from different breeding colonies had similar diets consisting of lower and higher trophic prey prior to arrival to breeding grounds. In contrast, δ15N signatures in feathers indicated chick diet varied by colony. Hg concentrations demonstrated significant positive relationships with δ15N providing support for the hypothesis of Hg biomagnification up the food chain. δ13C signatures in both tissue types provided evidence of foraging habitat segregation among populations. The differences in Hg exposure and foraging ecology suggest that each colony has localized foraging behaviors by breeding adults that warrant additional investigation. Fil: McKenzie, Ashley C. University of North Carolina; Estados Unidos Fil: Silvestro, Anahí Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina Fil: Marti, Lucas J. Universidad Centro de Altos Estudios en Ciencias Exactas; Argentina ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentina Patagonia San Juan Environmental Toxicology and Chemistry 40 10 2791 2801 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
MERCURY BIOACCUMULATION BIOMONITORING EGG MEMBRANE FEATHER STABLE ISOTOPE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
MERCURY BIOACCUMULATION BIOMONITORING EGG MEMBRANE FEATHER STABLE ISOTOPE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 McKenzie, Ashley C. Silvestro, Anahí Mariel Marti, Lucas J. Emslie, Steven Douglas Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
topic_facet |
MERCURY BIOACCUMULATION BIOMONITORING EGG MEMBRANE FEATHER STABLE ISOTOPE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Mercury (Hg) is a pervasive environmental contaminant that accumulates in the organs and tissues of seabirds at concentrations capable of causing acute or long-term adverse health effects. In this study, Hg concentrations in Adélie Penguin (Pygoscelis adeliae) egg membranes and chick feathers served as a proxy for Hg bioavailability in the marine environment surrounding the northern Antarctic Peninsula. Stable isotopes were measured in conjunction with Hg to infer information regarding feeding habits (δ15N, diet/trophic level; δ13C, foraging habitat). Hg concentrations were low relative to toxicity benchmark values associated with adverse health effects in birds and ranged between 0.006 ? 0.080 µg g-1 dry weight (n = 65) in egg membranes and 0.140 ? 1.05 µg g-1 fresh weight (n= 38) in feathers. Egg membrane δ15N signatures suggested females from different breeding colonies had similar diets consisting of lower and higher trophic prey prior to arrival to breeding grounds. In contrast, δ15N signatures in feathers indicated chick diet varied by colony. Hg concentrations demonstrated significant positive relationships with δ15N providing support for the hypothesis of Hg biomagnification up the food chain. δ13C signatures in both tissue types provided evidence of foraging habitat segregation among populations. The differences in Hg exposure and foraging ecology suggest that each colony has localized foraging behaviors by breeding adults that warrant additional investigation. Fil: McKenzie, Ashley C. University of North Carolina; Estados Unidos Fil: Silvestro, Anahí Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina Fil: Marti, Lucas J. Universidad Centro de Altos Estudios en Ciencias Exactas; Argentina ... |
format |
Article in Journal/Newspaper |
author |
McKenzie, Ashley C. Silvestro, Anahí Mariel Marti, Lucas J. Emslie, Steven Douglas |
author_facet |
McKenzie, Ashley C. Silvestro, Anahí Mariel Marti, Lucas J. Emslie, Steven Douglas |
author_sort |
McKenzie, Ashley C. |
title |
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
title_short |
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
title_full |
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
title_fullStr |
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
title_full_unstemmed |
Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region |
title_sort |
intraspecific variation in mercury, δ 15 n, and δ 13 c among three adélie penguin (pygoscelis adeliae) populations in the northern antarctic peninsula region |
publisher |
Society of Environmental Toxicology and Chemistry |
url |
http://hdl.handle.net/11336/151928 |
geographic |
Antarctic Antarctic Peninsula Argentina Patagonia San Juan |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Patagonia San Juan |
genre |
Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/etc.5166 info:eu-repo/semantics/altIdentifier/doi/10.1002/etc.5166 http://hdl.handle.net/11336/151928 McKenzie, Ashley C.; Silvestro, Anahí Mariel; Marti, Lucas J.; Emslie, Steven Douglas; Intraspecific variation in mercury, δ 15 N, and δ 13 C among three Adélie Penguin (Pygoscelis adeliae) populations in the northern Antarctic Peninsula region; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 40; 10; 7-2021; 2791-2801 0730-7268 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1002/etc.5166 |
container_title |
Environmental Toxicology and Chemistry |
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40 |
container_issue |
10 |
container_start_page |
2791 |
op_container_end_page |
2801 |
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1779315556134944768 |