Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard
Accepted manuscript version. Published version available in Environmental Pollution 2017, 229 :146-158. Perfluoroalkyl substances (PFASs) have been detected in organisms worldwide, including Polar Regions. The polar bear (Ursus maritimus), the top predator of Arctic marine ecosystems, accumulates hi...
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Online Access: | https://hdl.handle.net/10037/12270 https://doi.org/10.1016/j.envpol.2017.04.100 |
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ftunivtroemsoe:oai:munin.uit.no:10037/12270 2023-05-15T15:19:03+02:00 Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard Tartu, Sabrina Bourgeon, Sophie Aars, Jon Andersen, Magnus Lone, Karen Jenssen, Bjørn Munro Polder, Anuschka Thiemann, Gregory W. Torget, Vidar Welker, Jeffrey Martin Routti, Heli Anna Irmeli 2017-06-03 https://hdl.handle.net/10037/12270 https://doi.org/10.1016/j.envpol.2017.04.100 eng eng Elsevier Environmental Pollution info:eu-repo/grantAgreement/RCN/POLARPROG/216568/NORWAY/Synergistic effects of sea ice-free periods and contaminant exposure on energy metabolism in polar bears// Tartu, S., Bourgeon, S., Aars, J., Andersen, M., Lone, K., Jenssen, B. M. . Routti H. A. I. (2017). Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard. Environmental Pollution. 229:146-158. FRIDAID 1475296 doi:10.1016/j.envpol.2017.04.100 0269-7491 1873-6424 https://hdl.handle.net/10037/12270 openAccess VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 Ursus maritimus PFAS Breeding status Habitat quality Fasting Stable isotope VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.1016/j.envpol.2017.04.100 2021-06-25T17:55:18Z Accepted manuscript version. Published version available in Environmental Pollution 2017, 229 :146-158. Perfluoroalkyl substances (PFASs) have been detected in organisms worldwide, including Polar Regions. The polar bear (Ursus maritimus), the top predator of Arctic marine ecosystems, accumulates high concentrations of PFASs, which may be harmful to their health. The aim of this study was to investigate which factors (habitat quality, season, year, diet, metabolic state [i.e. feeding/fasting], breeding status and age) predict PFAS concentrations in female polar bears captured on Svalbard (Norway). We analysed two perfluoroalkyl sulfonates (PFSAs: PFHxS and PFOS) and C 8 -C 13 perfluoroalkyl carboxylates (PFCAs) in 112 plasma samples obtained in April and September 2012–2013. Nitrogen and carbon stable isotope ratios (δ 15 N, δ 13 C) in red blood cells and plasma, and fatty acid profiles in adipose tissue were used as proxies for diet. We determined habitat quality based on movement patterns, capture position and resource selection functions, which are models that predict the probability of use of a resource unit. Plasma urea to creatinine ratios were used as proxies for metabolic state (i.e. feeding or fasting state). Results were obtained from a conditional model averaging of 42 general linear mixed models. Diet was the most important predictor of PFAS concentrations. PFAS concentrations were positively related to trophic level and marine diet input. High PFAS concentrations in females feeding on the eastern part of Svalbard, where the habitat quality was higher than on the western coast, were likely related to diet and possibly to abiotic factors. Concentrations of PFSAs and C 8 -C 10 PFCAs were higher in fasting than in feeding polar bears and PFOS was higher in females with cubs of the year than in solitary females. Our findings suggest that female polar bears that are exposed to the highest levels of PFAS are those 1) feeding on high trophic level sea ice-associated prey, 2) fasting and 3) with small cubs. Article in Journal/Newspaper Arctic Sea ice Svalbard Ursus maritimus University of Tromsø: Munin Open Research Archive Arctic Norway Svalbard Environmental Pollution 229 146 158 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 Ursus maritimus PFAS Breeding status Habitat quality Fasting Stable isotope VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 Ursus maritimus PFAS Breeding status Habitat quality Fasting Stable isotope VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 Tartu, Sabrina Bourgeon, Sophie Aars, Jon Andersen, Magnus Lone, Karen Jenssen, Bjørn Munro Polder, Anuschka Thiemann, Gregory W. Torget, Vidar Welker, Jeffrey Martin Routti, Heli Anna Irmeli Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 Ursus maritimus PFAS Breeding status Habitat quality Fasting Stable isotope VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 |
description |
Accepted manuscript version. Published version available in Environmental Pollution 2017, 229 :146-158. Perfluoroalkyl substances (PFASs) have been detected in organisms worldwide, including Polar Regions. The polar bear (Ursus maritimus), the top predator of Arctic marine ecosystems, accumulates high concentrations of PFASs, which may be harmful to their health. The aim of this study was to investigate which factors (habitat quality, season, year, diet, metabolic state [i.e. feeding/fasting], breeding status and age) predict PFAS concentrations in female polar bears captured on Svalbard (Norway). We analysed two perfluoroalkyl sulfonates (PFSAs: PFHxS and PFOS) and C 8 -C 13 perfluoroalkyl carboxylates (PFCAs) in 112 plasma samples obtained in April and September 2012–2013. Nitrogen and carbon stable isotope ratios (δ 15 N, δ 13 C) in red blood cells and plasma, and fatty acid profiles in adipose tissue were used as proxies for diet. We determined habitat quality based on movement patterns, capture position and resource selection functions, which are models that predict the probability of use of a resource unit. Plasma urea to creatinine ratios were used as proxies for metabolic state (i.e. feeding or fasting state). Results were obtained from a conditional model averaging of 42 general linear mixed models. Diet was the most important predictor of PFAS concentrations. PFAS concentrations were positively related to trophic level and marine diet input. High PFAS concentrations in females feeding on the eastern part of Svalbard, where the habitat quality was higher than on the western coast, were likely related to diet and possibly to abiotic factors. Concentrations of PFSAs and C 8 -C 10 PFCAs were higher in fasting than in feeding polar bears and PFOS was higher in females with cubs of the year than in solitary females. Our findings suggest that female polar bears that are exposed to the highest levels of PFAS are those 1) feeding on high trophic level sea ice-associated prey, 2) fasting and 3) with small cubs. |
format |
Article in Journal/Newspaper |
author |
Tartu, Sabrina Bourgeon, Sophie Aars, Jon Andersen, Magnus Lone, Karen Jenssen, Bjørn Munro Polder, Anuschka Thiemann, Gregory W. Torget, Vidar Welker, Jeffrey Martin Routti, Heli Anna Irmeli |
author_facet |
Tartu, Sabrina Bourgeon, Sophie Aars, Jon Andersen, Magnus Lone, Karen Jenssen, Bjørn Munro Polder, Anuschka Thiemann, Gregory W. Torget, Vidar Welker, Jeffrey Martin Routti, Heli Anna Irmeli |
author_sort |
Tartu, Sabrina |
title |
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
title_short |
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
title_full |
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
title_fullStr |
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
title_full_unstemmed |
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard |
title_sort |
diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from svalbard |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/12270 https://doi.org/10.1016/j.envpol.2017.04.100 |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic Sea ice Svalbard Ursus maritimus |
genre_facet |
Arctic Sea ice Svalbard Ursus maritimus |
op_relation |
Environmental Pollution info:eu-repo/grantAgreement/RCN/POLARPROG/216568/NORWAY/Synergistic effects of sea ice-free periods and contaminant exposure on energy metabolism in polar bears// Tartu, S., Bourgeon, S., Aars, J., Andersen, M., Lone, K., Jenssen, B. M. . Routti H. A. I. (2017). Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard. Environmental Pollution. 229:146-158. FRIDAID 1475296 doi:10.1016/j.envpol.2017.04.100 0269-7491 1873-6424 https://hdl.handle.net/10037/12270 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2017.04.100 |
container_title |
Environmental Pollution |
container_volume |
229 |
container_start_page |
146 |
op_container_end_page |
158 |
_version_ |
1766349247572082688 |