Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic
Abstract The present study examined spatial trends of perfluoroalkyl compounds (PFCs) in liver samples from 11 populations of ringed seals ( Phoca hispida ) in the Canadian Arctic from 2002 to 2005. Trophic position and relative carbon sources were compared by analyzing stable nitrogen and carbon is...
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crwiley:10.1897/07-428.1 2024-04-28T08:05:15+00:00 Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic Butt, Craig M. Mabury, Scott A. Kwan, Michael Wang, Xiaowa Muir, Derek C.G. 2008 http://dx.doi.org/10.1897/07-428.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F07-428.1 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/07-428.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 27, issue 3, page 542-553 ISSN 0730-7268 1552-8618 Health, Toxicology and Mutagenesis Environmental Chemistry journal-article 2008 crwiley https://doi.org/10.1897/07-428.1 2024-04-08T06:55:46Z Abstract The present study examined spatial trends of perfluoroalkyl compounds (PFCs) in liver samples from 11 populations of ringed seals ( Phoca hispida ) in the Canadian Arctic from 2002 to 2005. Trophic position and relative carbon sources were compared by analyzing stable nitrogen and carbon isotopes in muscle samples. Geometric mean concentrations of total C 9 –C 15 perfluorinated carboxylates (PFCAs) ranged from 8.8 to 84 ng/g wet weight, and C 9 –C 11 PFCAs predominated. Perfluorooctane sulfonate was the dominant PFC measured, with concentrations ranging from 6.5 to 89 ng/g wet weight, contributing between 29 and 56% of the total PFC concentration. Overall, mean PFC concentrations were similar between populations, and differences were attributed largely to elevated levels in the Gjoa Haven (Rae Strait, central Canadian Arctic archipelago) and Inukjuak populations (eastern Hudson Bay) and to lower concentrations at Pangnirtung (Cumberland Sound, Baffin Island). Mean stable nitrogen isotope ratios (±95% confidence intervals) ranged from 14.7‰ (±0.3‰) at Nain (Labrador) to 17.9‰ (±0.7‰) at Gjoa Haven, suggesting that all populations were within the same trophic level. Stable carbon isotope ratios varied widely between the seal populations, ranging from —22.9‰ (±0.2‰) at Gjoa Haven to — 17.7‰ (±0.4‰) at Nain. The δ 13 C ratios from Gjoa Haven were significantly more depleted than those for other populations and may suggest a terrestrially based carbon source. The depleted stable carbon isotope ratio may explain the elevated PFC concentrations in the Gjoa Haven population. Analysis of covariance indicated that δ 13 C was a significant covariable for seven of nine seal populations for which δ 13 C values were available. After adjusting for δ 13 C values, concentrations of most PFCs generally were statistically greater in the Grise Fiord, Qikiqtarjuaq, Arviat, and Nain populations. Article in Journal/Newspaper Arctic Archipelago Arctic Arviat Baffin Island Baffin Canadian Arctic Archipelago Cumberland Sound Gjoa Haven Grise Fiord Hudson Bay Inukjuak Nain Phoca hispida Qikiqtarjuaq Wiley Online Library Environmental Toxicology and Chemistry 27 3 542 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Health, Toxicology and Mutagenesis Environmental Chemistry |
spellingShingle |
Health, Toxicology and Mutagenesis Environmental Chemistry Butt, Craig M. Mabury, Scott A. Kwan, Michael Wang, Xiaowa Muir, Derek C.G. Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
topic_facet |
Health, Toxicology and Mutagenesis Environmental Chemistry |
description |
Abstract The present study examined spatial trends of perfluoroalkyl compounds (PFCs) in liver samples from 11 populations of ringed seals ( Phoca hispida ) in the Canadian Arctic from 2002 to 2005. Trophic position and relative carbon sources were compared by analyzing stable nitrogen and carbon isotopes in muscle samples. Geometric mean concentrations of total C 9 –C 15 perfluorinated carboxylates (PFCAs) ranged from 8.8 to 84 ng/g wet weight, and C 9 –C 11 PFCAs predominated. Perfluorooctane sulfonate was the dominant PFC measured, with concentrations ranging from 6.5 to 89 ng/g wet weight, contributing between 29 and 56% of the total PFC concentration. Overall, mean PFC concentrations were similar between populations, and differences were attributed largely to elevated levels in the Gjoa Haven (Rae Strait, central Canadian Arctic archipelago) and Inukjuak populations (eastern Hudson Bay) and to lower concentrations at Pangnirtung (Cumberland Sound, Baffin Island). Mean stable nitrogen isotope ratios (±95% confidence intervals) ranged from 14.7‰ (±0.3‰) at Nain (Labrador) to 17.9‰ (±0.7‰) at Gjoa Haven, suggesting that all populations were within the same trophic level. Stable carbon isotope ratios varied widely between the seal populations, ranging from —22.9‰ (±0.2‰) at Gjoa Haven to — 17.7‰ (±0.4‰) at Nain. The δ 13 C ratios from Gjoa Haven were significantly more depleted than those for other populations and may suggest a terrestrially based carbon source. The depleted stable carbon isotope ratio may explain the elevated PFC concentrations in the Gjoa Haven population. Analysis of covariance indicated that δ 13 C was a significant covariable for seven of nine seal populations for which δ 13 C values were available. After adjusting for δ 13 C values, concentrations of most PFCs generally were statistically greater in the Grise Fiord, Qikiqtarjuaq, Arviat, and Nain populations. |
format |
Article in Journal/Newspaper |
author |
Butt, Craig M. Mabury, Scott A. Kwan, Michael Wang, Xiaowa Muir, Derek C.G. |
author_facet |
Butt, Craig M. Mabury, Scott A. Kwan, Michael Wang, Xiaowa Muir, Derek C.G. |
author_sort |
Butt, Craig M. |
title |
Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
title_short |
Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
title_full |
Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
title_fullStr |
Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
title_full_unstemmed |
Spatial trends of perfluoroalkyl compounds in ringed seals ( Phoca hispida ) from the Canadian Arctic |
title_sort |
spatial trends of perfluoroalkyl compounds in ringed seals ( phoca hispida ) from the canadian arctic |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1897/07-428.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F07-428.1 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1897/07-428.1 |
genre |
Arctic Archipelago Arctic Arviat Baffin Island Baffin Canadian Arctic Archipelago Cumberland Sound Gjoa Haven Grise Fiord Hudson Bay Inukjuak Nain Phoca hispida Qikiqtarjuaq |
genre_facet |
Arctic Archipelago Arctic Arviat Baffin Island Baffin Canadian Arctic Archipelago Cumberland Sound Gjoa Haven Grise Fiord Hudson Bay Inukjuak Nain Phoca hispida Qikiqtarjuaq |
op_source |
Environmental Toxicology and Chemistry volume 27, issue 3, page 542-553 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1897/07-428.1 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
27 |
container_issue |
3 |
container_start_page |
542 |
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1797575404928630784 |