Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic
Climate change in the Arctic has widespread and complex effects on the health of animals and their populations. We used radioimmunoassay to measure blubber cortisol in ringed seals (Pusa hispida) sampled in Ulukhaktok, Inuvialuit Settlement Region, Northwest Territories, Canada (spring, 2002, 2004–2...
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ftpubmed:oai:pubmedcentral.nih.gov:9562108 2023-05-15T14:57:47+02:00 Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic Ogloff, Wesley R Anderson, Randi A Yurkowski, David J Debets, Cassandra D Anderson, W Gary Ferguson, Steven H 2022-06-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9562108/ http://www.ncbi.nlm.nih.gov/pubmed/36262800 https://doi.org/10.1093/jmammal/gyac047 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9562108/ http://www.ncbi.nlm.nih.gov/pubmed/36262800 http://dx.doi.org/10.1093/jmammal/gyac047 © The Author(s) 2022. Published by Oxford University Press on behalf of the American Society of Mammalogists. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY J Mammal Feature Articles Text 2022 ftpubmed https://doi.org/10.1093/jmammal/gyac047 2022-10-23T00:37:09Z Climate change in the Arctic has widespread and complex effects on the health of animals and their populations. We used radioimmunoassay to measure blubber cortisol in ringed seals (Pusa hispida) sampled in Ulukhaktok, Inuvialuit Settlement Region, Northwest Territories, Canada (spring, 2002, 2004–2005, 2007–2012) and Arviat, Nunavut, Canada (autumn, 2003–2012) to examine chronic stress relative to biology (age, sex, length), body condition (blubber depth), and diet (δ(13)C, δ(15)N, and isotopic niche size). Ulukhaktok ringed seals had higher cortisol concentrations overall (0.46 ± 0.04 ng/g) than Arviat ringed seals (0.36 ± 0.03 ng/g), and these higher concentrations were associated with higher muscle δ(15)N and lower blubber thickness. In contrast, blubber cortisol concentrations for Arviat ringed seals decreased with blubber depth and increased with age, though testing of age effects individually suggests that age-related patterns are weak. Annual mean cortisol concentration increased from 2003 to 2012 in Arviat ringed seals, but low sample sizes precluded analysis of annual patterns for Ulukhaktok ringed seals. The trend of increased cortisol over time in Arviat ringed seals suggests that they might be experiencing greater chronic stress over time, which could have implications for numerous population health metrics including reproduction and pup recruitment. Text Arctic Arviat Climate change Inuvialuit Northwest Territories Nunavut Pusa hispida ringed seal Ulukhaktok PubMed Central (PMC) Arctic Canada Northwest Territories Nunavut Ulukhaktok ENVELOPE(-117.772,-117.772,70.736,70.736) Journal of Mammalogy 103 5 1208 1220 |
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English |
topic |
Feature Articles |
spellingShingle |
Feature Articles Ogloff, Wesley R Anderson, Randi A Yurkowski, David J Debets, Cassandra D Anderson, W Gary Ferguson, Steven H Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
topic_facet |
Feature Articles |
description |
Climate change in the Arctic has widespread and complex effects on the health of animals and their populations. We used radioimmunoassay to measure blubber cortisol in ringed seals (Pusa hispida) sampled in Ulukhaktok, Inuvialuit Settlement Region, Northwest Territories, Canada (spring, 2002, 2004–2005, 2007–2012) and Arviat, Nunavut, Canada (autumn, 2003–2012) to examine chronic stress relative to biology (age, sex, length), body condition (blubber depth), and diet (δ(13)C, δ(15)N, and isotopic niche size). Ulukhaktok ringed seals had higher cortisol concentrations overall (0.46 ± 0.04 ng/g) than Arviat ringed seals (0.36 ± 0.03 ng/g), and these higher concentrations were associated with higher muscle δ(15)N and lower blubber thickness. In contrast, blubber cortisol concentrations for Arviat ringed seals decreased with blubber depth and increased with age, though testing of age effects individually suggests that age-related patterns are weak. Annual mean cortisol concentration increased from 2003 to 2012 in Arviat ringed seals, but low sample sizes precluded analysis of annual patterns for Ulukhaktok ringed seals. The trend of increased cortisol over time in Arviat ringed seals suggests that they might be experiencing greater chronic stress over time, which could have implications for numerous population health metrics including reproduction and pup recruitment. |
format |
Text |
author |
Ogloff, Wesley R Anderson, Randi A Yurkowski, David J Debets, Cassandra D Anderson, W Gary Ferguson, Steven H |
author_facet |
Ogloff, Wesley R Anderson, Randi A Yurkowski, David J Debets, Cassandra D Anderson, W Gary Ferguson, Steven H |
author_sort |
Ogloff, Wesley R |
title |
Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
title_short |
Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
title_full |
Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
title_fullStr |
Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
title_full_unstemmed |
Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
title_sort |
spatiotemporal variation of ringed seal blubber cortisol levels in the canadian arctic |
publisher |
Oxford University Press |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9562108/ http://www.ncbi.nlm.nih.gov/pubmed/36262800 https://doi.org/10.1093/jmammal/gyac047 |
long_lat |
ENVELOPE(-117.772,-117.772,70.736,70.736) |
geographic |
Arctic Canada Northwest Territories Nunavut Ulukhaktok |
geographic_facet |
Arctic Canada Northwest Territories Nunavut Ulukhaktok |
genre |
Arctic Arviat Climate change Inuvialuit Northwest Territories Nunavut Pusa hispida ringed seal Ulukhaktok |
genre_facet |
Arctic Arviat Climate change Inuvialuit Northwest Territories Nunavut Pusa hispida ringed seal Ulukhaktok |
op_source |
J Mammal |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9562108/ http://www.ncbi.nlm.nih.gov/pubmed/36262800 http://dx.doi.org/10.1093/jmammal/gyac047 |
op_rights |
© The Author(s) 2022. Published by Oxford University Press on behalf of the American Society of Mammalogists. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/jmammal/gyac047 |
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Journal of Mammalogy |
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103 |
container_issue |
5 |
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1208 |
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1220 |
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1766329907810402304 |