Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).

Changes in concentration of pollutants and pathogen distribution can vary among ecotypes (e.g. marine versus terrestrial food resources). This may have important implications for the animals that reside within them. We examined 1) canid pathogen presence in an endangered arctic fox (Vulpes lagopus)...

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Autores principales:	Natalia Bocharova, Gabriele Treu, Gábor Árpád Czirják, Oliver Krone, Volker Stefanski, Gudrun Wibbelt, Ester Rut Unnsteinsdóttir, Páll Hersteinsson, Gereon Schares, Lilia Doronina, Mikhail Goltsman, Alex D Greenwood
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/087a5aadcc904973a1d3f99c2ff5b457
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spelling	oai:doaj.org-article:087a5aadcc904973a1d3f99c2ff5b4572021-11-18T07:46:51ZCorrelates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).1932-620310.1371/journal.pone.0060879https://doaj.org/article/087a5aadcc904973a1d3f99c2ff5b4572013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23671561/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Changes in concentration of pollutants and pathogen distribution can vary among ecotypes (e.g. marine versus terrestrial food resources). This may have important implications for the animals that reside within them. We examined 1) canid pathogen presence in an endangered arctic fox (Vulpes lagopus) population and 2) relative total mercury (THg) level as a function of ecotype ('coastal' or 'inland') for arctic foxes to test whether the presence of pathogens or heavy metal concentration correlate with population health. The Bering Sea populations on Bering and Mednyi Islands were compared to Icelandic arctic fox populations with respect to inland and coastal ecotypes. Serological and DNA based pathogen screening techniques were used to examine arctic foxes for pathogens. THg was measured by atomic absorption spectrometry from hair samples of historical and modern collected arctic foxes and samples from their prey species (hair and internal organs). Presence of pathogens did not correlate with population decline from Mednyi Island. However, THg concentration correlated strongly with ecotype and was reflected in the THg concentrations detected in available food sources in each ecotype. The highest concentration of THg was found in ecotypes where foxes depended on marine vertebrates for food. Exclusively inland ecotypes had low THg concentrations. The results suggest that absolute exposure to heavy metals may be less important than the feeding ecology and feeding opportunities of top predators such as arctic foxes which may in turn influence population health and stability. A higher risk to wildlife of heavy metal exposure correlates with feeding strategies that rely primarily on a marine based diet.Natalia BocharovaGabriele TreuGábor Árpád CzirjákOliver KroneVolker StefanskiGudrun WibbeltEster Rut UnnsteinsdóttirPáll HersteinssonGereon ScharesLilia DoroninaMikhail GoltsmanAlex D GreenwoodPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 5, p e60879 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Natalia Bocharova Gabriele Treu Gábor Árpád Czirják Oliver Krone Volker Stefanski Gudrun Wibbelt Ester Rut Unnsteinsdóttir Páll Hersteinsson Gereon Schares Lilia Doronina Mikhail Goltsman Alex D Greenwood Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
description	Changes in concentration of pollutants and pathogen distribution can vary among ecotypes (e.g. marine versus terrestrial food resources). This may have important implications for the animals that reside within them. We examined 1) canid pathogen presence in an endangered arctic fox (Vulpes lagopus) population and 2) relative total mercury (THg) level as a function of ecotype ('coastal' or 'inland') for arctic foxes to test whether the presence of pathogens or heavy metal concentration correlate with population health. The Bering Sea populations on Bering and Mednyi Islands were compared to Icelandic arctic fox populations with respect to inland and coastal ecotypes. Serological and DNA based pathogen screening techniques were used to examine arctic foxes for pathogens. THg was measured by atomic absorption spectrometry from hair samples of historical and modern collected arctic foxes and samples from their prey species (hair and internal organs). Presence of pathogens did not correlate with population decline from Mednyi Island. However, THg concentration correlated strongly with ecotype and was reflected in the THg concentrations detected in available food sources in each ecotype. The highest concentration of THg was found in ecotypes where foxes depended on marine vertebrates for food. Exclusively inland ecotypes had low THg concentrations. The results suggest that absolute exposure to heavy metals may be less important than the feeding ecology and feeding opportunities of top predators such as arctic foxes which may in turn influence population health and stability. A higher risk to wildlife of heavy metal exposure correlates with feeding strategies that rely primarily on a marine based diet.
format	article
author	Natalia Bocharova Gabriele Treu Gábor Árpád Czirják Oliver Krone Volker Stefanski Gudrun Wibbelt Ester Rut Unnsteinsdóttir Páll Hersteinsson Gereon Schares Lilia Doronina Mikhail Goltsman Alex D Greenwood
author_facet	Natalia Bocharova Gabriele Treu Gábor Árpád Czirják Oliver Krone Volker Stefanski Gudrun Wibbelt Ester Rut Unnsteinsdóttir Páll Hersteinsson Gereon Schares Lilia Doronina Mikhail Goltsman Alex D Greenwood
author_sort	Natalia Bocharova
title	Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
title_short	Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
title_full	Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
title_fullStr	Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
title_full_unstemmed	Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).
title_sort	correlates between feeding ecology and mercury levels in historical and modern arctic foxes (vulpes lagopus).
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/087a5aadcc904973a1d3f99c2ff5b457
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Correlates between feeding ecology and mercury levels in historical and modern arctic foxes (Vulpes lagopus).

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