EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL
When reproduction competes with the amount of resources available for survival during an unpredictable nonbreeding season, individuals should adopt a risk-sensitive regulation of their reproductive allocation. We tested this hypothesis on female reindeer (Rangifer tarandus), which face a trade-off b...
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ftdatacite:10.6084/m9.figshare.c.3300242.v1 2023-05-15T18:04:21+02:00 EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL Bård-Jørgen Bårdsen Fauchald, Per Tveraa, Torkild Langeland, Knut Yoccoz, Nigel Gilles Ims, Rolf Anker 2016 https://dx.doi.org/10.6084/m9.figshare.c.3300242.v1 https://figshare.com/collections/EXPERIMENTAL_EVIDENCE_OF_A_RISK-SENSITIVE_REPRODUCTIVE_ALLOCATION_IN_A_LONG-LIVED_MAMMAL/3300242/1 unknown Figshare https://dx.doi.org/10.1890/07-0414.1 https://dx.doi.org/10.6084/m9.figshare.c.3300242 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3300242.v1 https://doi.org/10.1890/07-0414.1 https://doi.org/10.6084/m9.figshare.c.3300242 2021-11-05T12:55:41Z When reproduction competes with the amount of resources available for survival during an unpredictable nonbreeding season, individuals should adopt a risk-sensitive regulation of their reproductive allocation. We tested this hypothesis on female reindeer (Rangifer tarandus), which face a trade-off between reproduction and acquisition of body reserves during spring and summer, with autumn body mass functioning as insurance against stochastic winter climatic severity. The study was conducted in a population consisting of two herds: one that received supplementary winter feeding for four years while the other utilized natural pastures. The females receiving additional forage allocated more to their calves. Experimental translocation of females between the herds was conducted to simulate two contrasting rapid alterations of winter conditions. When females receiving supplementary feeding were moved to natural pastures, they promptly reduced their reproductive allocation the following summer. However, when winter conditions were improved, females were reluctant to increase their reproductive allocation. This asymmetric response to improved vs. reduced winter conditions is consistent with a risk-averse adjustment in reproductive allocation. The ability of individuals to track their environment and the concordant risk-sensitive adjustment of reproductive allocation may render subarctic reindeer more resilient to climate change than previously supposed. Article in Journal/Newspaper Rangifer tarandus Subarctic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Bård-Jørgen Bårdsen Fauchald, Per Tveraa, Torkild Langeland, Knut Yoccoz, Nigel Gilles Ims, Rolf Anker EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
When reproduction competes with the amount of resources available for survival during an unpredictable nonbreeding season, individuals should adopt a risk-sensitive regulation of their reproductive allocation. We tested this hypothesis on female reindeer (Rangifer tarandus), which face a trade-off between reproduction and acquisition of body reserves during spring and summer, with autumn body mass functioning as insurance against stochastic winter climatic severity. The study was conducted in a population consisting of two herds: one that received supplementary winter feeding for four years while the other utilized natural pastures. The females receiving additional forage allocated more to their calves. Experimental translocation of females between the herds was conducted to simulate two contrasting rapid alterations of winter conditions. When females receiving supplementary feeding were moved to natural pastures, they promptly reduced their reproductive allocation the following summer. However, when winter conditions were improved, females were reluctant to increase their reproductive allocation. This asymmetric response to improved vs. reduced winter conditions is consistent with a risk-averse adjustment in reproductive allocation. The ability of individuals to track their environment and the concordant risk-sensitive adjustment of reproductive allocation may render subarctic reindeer more resilient to climate change than previously supposed. |
format |
Article in Journal/Newspaper |
author |
Bård-Jørgen Bårdsen Fauchald, Per Tveraa, Torkild Langeland, Knut Yoccoz, Nigel Gilles Ims, Rolf Anker |
author_facet |
Bård-Jørgen Bårdsen Fauchald, Per Tveraa, Torkild Langeland, Knut Yoccoz, Nigel Gilles Ims, Rolf Anker |
author_sort |
Bård-Jørgen Bårdsen |
title |
EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
title_short |
EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
title_full |
EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
title_fullStr |
EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
title_full_unstemmed |
EXPERIMENTAL EVIDENCE OF A RISK-SENSITIVE REPRODUCTIVE ALLOCATION IN A LONG-LIVED MAMMAL |
title_sort |
experimental evidence of a risk-sensitive reproductive allocation in a long-lived mammal |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3300242.v1 https://figshare.com/collections/EXPERIMENTAL_EVIDENCE_OF_A_RISK-SENSITIVE_REPRODUCTIVE_ALLOCATION_IN_A_LONG-LIVED_MAMMAL/3300242/1 |
genre |
Rangifer tarandus Subarctic |
genre_facet |
Rangifer tarandus Subarctic |
op_relation |
https://dx.doi.org/10.1890/07-0414.1 https://dx.doi.org/10.6084/m9.figshare.c.3300242 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3300242.v1 https://doi.org/10.1890/07-0414.1 https://doi.org/10.6084/m9.figshare.c.3300242 |
_version_ |
1766175712042024960 |