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dc.contributor.authorTrondrud, Liv Monica
dc.contributor.authorPigeon, Gabriel
dc.contributor.authorAlbon, Steve
dc.contributor.authorArnold, Walter
dc.contributor.authorEvans, Alina
dc.contributor.authorIrvine, R. Justin
dc.contributor.authorKról, Elżbieta
dc.contributor.authorRopstad, Erik
dc.contributor.authorStien, Audun
dc.contributor.authorVeiberg, Vebjørn
dc.contributor.authorSpeakman, John R.
dc.contributor.authorLoe, Leif Egil
dc.date.accessioned2021-11-12T12:37:10Z
dc.date.available2021-11-12T12:37:10Z
dc.date.created2021-08-02T12:16:31Z
dc.date.issued2021
dc.identifier.citationPhilosophical Transactions of the Royal Society of London. Biological Sciences. 2021, 376 (1831), .en_US
dc.identifier.issn0962-8436
dc.identifier.urihttps://hdl.handle.net/11250/2829354
dc.description.abstractSeasonal energetic challenges may constrain an animal's ability to respond to changing individual and environmental conditions. Here, we investigated variation in heart rate, a well-established proxy for metabolic rate, in Svalbard reindeer (Rangifer tarandus platyrhynchus), a species with strong seasonal changes in foraging and metabolic activity. In 19 adult females, we recorded heart rate, subcutaneous temperature and activity using biologgers. Mean heart rate more than doubled from winter to summer. Typical drivers of energy expenditure, such as reproduction and activity, explained a relatively limited amount of variation (2–6% in winter and 16–24% in summer) compared to seasonality, which explained 75% of annual variation in heart rate. The relationship between heart rate and subcutaneous temperature depended on individual state via body mass, age and reproductive status, and the results suggested that peripheral heterothermy is an important pathway of energy management in both winter and summer. While the seasonal plasticity in energetics makes Svalbard reindeer well-adapted to their highly seasonal environment, intraseasonal constraints on modulation of their heart rate may limit their ability to respond to severe environmental change. This study emphasizes the importance of encompassing individual state and seasonal context when studying energetics in free-living animals.en_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleDeterminants of heart rate in Svalbard reindeer reveal mechanisms of seasonal energy managementen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber10en_US
dc.source.volume376en_US
dc.source.journalPhilosophical Transactions of the Royal Society of London. Biological Sciencesen_US
dc.source.issue1831en_US
dc.identifier.doi10.1098/rstb.2020.0215
dc.identifier.cristin1923403
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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