Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment
Rationale: Analysis of stable isotopes in tissue and excreta may provide information about animal diets and their nutritional state. As body condition may have a major influence on reproduction, linking stable isotope values to animal demographic rates may help unravel the drivers behind animal popu...
Published in: | Rapid Communications in Mass Spectrometry |
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2023
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Online Access: | https://pure.au.dk/portal/en/publications/52f13907-20fa-4851-877f-7bff274000f9 https://doi.org/10.1002/rcm.9470 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/52f13907-20fa-4851-877f-7bff274000f9 2024-02-11T10:01:06+01:00 Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment Schmidt, Niels Martin Michelsen, Anders Hansen, Lars Holst Aggerbeck, Marie Rønne Stelvig, Mikkel Kutz, Susan J. Mosbacher, Jesper B. 2023-03 https://pure.au.dk/portal/en/publications/52f13907-20fa-4851-877f-7bff274000f9 https://doi.org/10.1002/rcm.9470 eng eng https://pure.au.dk/portal/en/publications/52f13907-20fa-4851-877f-7bff274000f9 info:eu-repo/semantics/openAccess Schmidt , N M , Michelsen , A , Hansen , L H , Aggerbeck , M R , Stelvig , M , Kutz , S J & Mosbacher , J B 2023 , ' Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment ' , Rapid Communications in Mass Spectrometry , vol. 37 , no. 6 , e9470 . https://doi.org/10.1002/rcm.9470 Animals Arctic Regions Diet Female Hair Nutritional Status Pregnancy Ruminants article 2023 ftuniaarhuspubl https://doi.org/10.1002/rcm.9470 2024-01-18T00:01:01Z Rationale: Analysis of stable isotopes in tissue and excreta may provide information about animal diets and their nutritional state. As body condition may have a major influence on reproduction, linking stable isotope values to animal demographic rates may help unravel the drivers behind animal population dynamics. Methods: We performed sequential analysis of δ 15 N values in guard hair from 21 muskoxen (Ovibos moschatus) from Zackenberg in high arctic Greenland. We were able to reconstruct the dietary history for the population over a 5-year period with contrasting environmental conditions. We examined the linkage between guard hair δ 15 N values in 12 three-month periods and muskox calf recruitment to detect critical periods for muskox reproduction. Finally, we conducted similar analyses of the correlation between environmental conditions (snow depth and air temperature) and calf recruitment. Results: δ 15 N values exhibited a clear seasonal pattern with high levels in summer and low levels in winter. However, large inter-annual variation was found in winter values, suggesting varying levels of catabolism depending on snow conditions. In particular δ 15 N values during January–March were linked to muskox recruitment rates, with higher values coinciding with lower calf recruitment. δ 15 N values were a better predictor of muskox recruitment rates than environmental conditions. Conclusions: Although environmental conditions may ultimately determine the dietary δ 15 N signal in muskox guard hairs, muskox calf recruitment was more strongly correlated with δ 15 N values than ambient snow and temperature. The period January–March, corresponding to late gestation, appears particularly critical for muskox reproduction. Article in Journal/Newspaper Arctic Greenland muskox ovibos moschatus Zackenberg Aarhus University: Research Arctic Greenland Rapid Communications in Mass Spectrometry 37 6 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Animals Arctic Regions Diet Female Hair Nutritional Status Pregnancy Ruminants |
spellingShingle |
Animals Arctic Regions Diet Female Hair Nutritional Status Pregnancy Ruminants Schmidt, Niels Martin Michelsen, Anders Hansen, Lars Holst Aggerbeck, Marie Rønne Stelvig, Mikkel Kutz, Susan J. Mosbacher, Jesper B. Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
topic_facet |
Animals Arctic Regions Diet Female Hair Nutritional Status Pregnancy Ruminants |
description |
Rationale: Analysis of stable isotopes in tissue and excreta may provide information about animal diets and their nutritional state. As body condition may have a major influence on reproduction, linking stable isotope values to animal demographic rates may help unravel the drivers behind animal population dynamics. Methods: We performed sequential analysis of δ 15 N values in guard hair from 21 muskoxen (Ovibos moschatus) from Zackenberg in high arctic Greenland. We were able to reconstruct the dietary history for the population over a 5-year period with contrasting environmental conditions. We examined the linkage between guard hair δ 15 N values in 12 three-month periods and muskox calf recruitment to detect critical periods for muskox reproduction. Finally, we conducted similar analyses of the correlation between environmental conditions (snow depth and air temperature) and calf recruitment. Results: δ 15 N values exhibited a clear seasonal pattern with high levels in summer and low levels in winter. However, large inter-annual variation was found in winter values, suggesting varying levels of catabolism depending on snow conditions. In particular δ 15 N values during January–March were linked to muskox recruitment rates, with higher values coinciding with lower calf recruitment. δ 15 N values were a better predictor of muskox recruitment rates than environmental conditions. Conclusions: Although environmental conditions may ultimately determine the dietary δ 15 N signal in muskox guard hairs, muskox calf recruitment was more strongly correlated with δ 15 N values than ambient snow and temperature. The period January–March, corresponding to late gestation, appears particularly critical for muskox reproduction. |
format |
Article in Journal/Newspaper |
author |
Schmidt, Niels Martin Michelsen, Anders Hansen, Lars Holst Aggerbeck, Marie Rønne Stelvig, Mikkel Kutz, Susan J. Mosbacher, Jesper B. |
author_facet |
Schmidt, Niels Martin Michelsen, Anders Hansen, Lars Holst Aggerbeck, Marie Rønne Stelvig, Mikkel Kutz, Susan J. Mosbacher, Jesper B. |
author_sort |
Schmidt, Niels Martin |
title |
Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
title_short |
Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
title_full |
Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
title_fullStr |
Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
title_full_unstemmed |
Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
title_sort |
sequential analysis of δ 15 n in guard hair suggests late gestation is the most critical period for muskox calf recruitment |
publishDate |
2023 |
url |
https://pure.au.dk/portal/en/publications/52f13907-20fa-4851-877f-7bff274000f9 https://doi.org/10.1002/rcm.9470 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland muskox ovibos moschatus Zackenberg |
genre_facet |
Arctic Greenland muskox ovibos moschatus Zackenberg |
op_source |
Schmidt , N M , Michelsen , A , Hansen , L H , Aggerbeck , M R , Stelvig , M , Kutz , S J & Mosbacher , J B 2023 , ' Sequential analysis of δ 15 N in guard hair suggests late gestation is the most critical period for muskox calf recruitment ' , Rapid Communications in Mass Spectrometry , vol. 37 , no. 6 , e9470 . https://doi.org/10.1002/rcm.9470 |
op_relation |
https://pure.au.dk/portal/en/publications/52f13907-20fa-4851-877f-7bff274000f9 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/rcm.9470 |
container_title |
Rapid Communications in Mass Spectrometry |
container_volume |
37 |
container_issue |
6 |
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1790596846583808000 |