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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American Society of Mammalogists
2022
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ftbioone:10.1093/jmammal/gyac047 2024-06-02T08:01:41+00:00 Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson world 2022-06-17 text/HTML https://doi.org/10.1093/jmammal/gyac047 en eng American Society of Mammalogists doi:10.1093/jmammal/gyac047 All rights reserved. https://doi.org/10.1093/jmammal/gyac047 Arviat Ulukhaktok Text 2022 ftbioone https://doi.org/10.1093/jmammal/gyac047 2024-05-07T00:55:08Z 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. Text Arctic Arviat Climate change Inuvialuit Northwest Territories Nunavut Pusa hispida ringed seal Ulukhaktok BioOne Online Journals 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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ftbioone |
language |
English |
topic |
Arviat Ulukhaktok |
spellingShingle |
Arviat Ulukhaktok Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson Spatiotemporal variation of ringed seal blubber cortisol levels in the Canadian Arctic |
topic_facet |
Arviat Ulukhaktok |
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 (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 |
Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson |
format |
Text |
author |
Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson |
author_facet |
Wesley R. Ogloff Randi A. Anderson David J. Yurkowski Cassandra D. Debets W. Gary Anderson Steven H. Ferguson |
author_sort |
Wesley R. Ogloff |
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 |
American Society of Mammalogists |
publishDate |
2022 |
url |
https://doi.org/10.1093/jmammal/gyac047 |
op_coverage |
world |
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 |
https://doi.org/10.1093/jmammal/gyac047 |
op_relation |
doi:10.1093/jmammal/gyac047 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1093/jmammal/gyac047 |
container_title |
Journal of Mammalogy |
container_volume |
103 |
container_issue |
5 |
container_start_page |
1208 |
op_container_end_page |
1220 |
_version_ |
1800746081962688512 |