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dc.contributor.authorRojano-Doñate, Laia
dc.contributor.authorMcDonald, Birgitte I.
dc.contributor.authorWisniewska, Danuta M.
dc.contributor.authorJohnson, Mark
dc.contributor.authorTeilmann, Jonas
dc.contributor.authorWahlberg, Magnus
dc.contributor.authorHøjer-Kristensen, Jakob
dc.contributor.authorMadsen, Peter T.
dc.identifier.citationRojano-Doñate , L , McDonald , B I , Wisniewska , D M , Johnson , M , Teilmann , J , Wahlberg , M , Højer-Kristensen , J & Madsen , P T 2018 , ' High field metabolic rates of wild harbour porpoises ' , Journal of Experimental Biology , vol. 221 , no. 23 , jeb185827 .
dc.identifier.otherPURE: 257259184
dc.identifier.otherPURE UUID: c103b658-c3d4-47d3-a182-c729b5c5e8e7
dc.identifier.otherRIS: urn:7AA3BA8AB85504CAD35DBD3E1455B4C1
dc.identifier.otherScopus: 85058593844
dc.identifier.otherWOS: 000452622800014
dc.descriptionThis study was partly funded by the German Federal Agency for Nature Conservation (BfN) under the project ‘Under Water Experiments’ (project number FKZ 3515822000) and the BfN Cluster 7 ‘Effects of underwater noise on marine vertebrates’ (Z1.2-53302/2010/14) with additional support to P.T.M. and L.R.-D. from the Danish National Research Foundation (FNU) and the Carlsberg Foundation. B.I.M. was supported by a National Science Foundation International Research Postdoctoral Fellowship (OISE – 1150123). M.J. was supported by the Marine Alliance for Science and Technology Scotland (MASTS) and by a Marie Skłodowska-Curie award.en
dc.description.abstractReliable estimates of field metabolic rates (FMRs) in wild animals are essential for quantifying their ecological roles, as well as for evaluating fitness consequences of anthropogenic disturbances. Yet, standard methods for measuring FMR are difficult to use on free-ranging cetaceans whose FMR may deviate substantially from scaling predictions using terrestrial mammals. Harbour porpoises (Phocoena phocoena) are among the smallest marine mammals, and yet they live in cold, high-latitude waters where their high surface-to-volume ratio suggests high FMRs to stay warm. However, published FMR estimates of harbour porpoises are contradictory, with some studies claiming high FMRs and others concluding that the energetic requirements of porpoises resemble those of similar-sized terrestrial mammals. Here, we address this controversy using data from a combination of captive and wild porpoises to estimate the FMR of wild porpoises. We show that FMRs of harbour porpoises are up to two times greater than for similar-sized terrestrial mammals, supporting the hypothesis that small, carnivorous marine mammals in cold water have elevated FMRs. Despite the potential cost of thermoregulation in colder water, harbour porpoise FMRs are stable over seasonally changing water temperatures. Varying heat loss seems to be managed via cyclical fluctuations in energy intake, which serve to build up a blubber layer that largely offsets the extra costs of thermoregulation during winter. Such high FMRs are consistent with the recently reported high feeding rates of wild porpoises and highlight concerns about the potential impact of human activities on individual fitness and population dynamics.
dc.relation.ispartofJournal of Experimental Biologyen
dc.rightsCopyright © 2018 The Author(s). Published by The Company of Biologists Ltd. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectDoubly labelled wateren
dc.subjectFood intakeen
dc.subjectQH301 Biologyen
dc.titleHigh field metabolic rates of wild harbour porpoisesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews.Sound Tags Groupen
dc.contributor.institutionUniversity of St Andrews.Bioacoustics groupen
dc.description.statusPeer revieweden

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