Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic
Abstract 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, 200...
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Online Access: | http://dx.doi.org/10.1093/jmammal/gyac047 https://academic.oup.com/jmammal/article-pdf/103/5/1208/46331853/gyac047.pdf |
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croxfordunivpr:10.1093/jmammal/gyac047 2023-08-15T12:39:59+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 Flaherty, Elizabeth Fisheries and Oceans Canada ArcticNet Natural Sciences and Engineering Research Council of Canada Discovery Faculty of Graduate Studies and Biological Sciences Department at the University of Manitoba 2022 http://dx.doi.org/10.1093/jmammal/gyac047 https://academic.oup.com/jmammal/article-pdf/103/5/1208/46331853/gyac047.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ Journal of Mammalogy volume 103, issue 5, page 1208-1220 ISSN 0022-2372 1545-1542 Nature and Landscape Conservation Genetics Animal Science and Zoology Ecology Ecology, Evolution, Behavior and Systematics journal-article 2022 croxfordunivpr https://doi.org/10.1093/jmammal/gyac047 2023-07-21T11:37:01Z Abstract 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 (δ13C, δ15N, 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 δ15N 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. Article in Journal/Newspaper Arctic Arviat Climate change Inuvialuit Northwest Territories Nunavut Pusa hispida ringed seal Ulukhaktok Oxford University Press (via Crossref) Arctic Canada Northwest Territories Nunavut Ulukhaktok ENVELOPE(-117.772,-117.772,70.736,70.736) Journal of Mammalogy |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Nature and Landscape Conservation Genetics Animal Science and Zoology Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Nature and Landscape Conservation Genetics Animal Science and Zoology Ecology Ecology, Evolution, Behavior and Systematics 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 |
Nature and Landscape Conservation Genetics Animal Science and Zoology Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract 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 (δ13C, δ15N, 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 δ15N 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. |
author2 |
Flaherty, Elizabeth Fisheries and Oceans Canada ArcticNet Natural Sciences and Engineering Research Council of Canada Discovery Faculty of Graduate Studies and Biological Sciences Department at the University of Manitoba |
format |
Article in Journal/Newspaper |
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 (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/jmammal/gyac047 https://academic.oup.com/jmammal/article-pdf/103/5/1208/46331853/gyac047.pdf |
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 |
Journal of Mammalogy volume 103, issue 5, page 1208-1220 ISSN 0022-2372 1545-1542 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/jmammal/gyac047 |
container_title |
Journal of Mammalogy |
_version_ |
1774292659559464960 |