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dc.contributor.authorSchuert, Courtney
dc.contributor.authorPomeroy, Patrick
dc.contributor.authorTwiss, Sean
dc.identifier.citationSchuert , C , Pomeroy , P & Twiss , S 2020 , ' Coping styles in capital breeders modulate behavioural trade-offs in time allocation : assessing fine-scale activity budgets in lactating grey seals ( Halichoerus grypus ) using accelerometry and heart rate variability ' , Behavioral Ecology and Sociobiology , vol. 74 , 8 .
dc.identifier.otherPURE: 258191810
dc.identifier.otherPURE UUID: 447a24f4-2140-4b49-879b-086014a57233
dc.identifier.otherORCID: /0000-0003-1603-5630/work/67167084
dc.identifier.otherScopus: 85077054918
dc.identifier.otherWOS: 000519589100004
dc.descriptionFunding: National Environmental Research Council long term funding to the Sea Mammal Research Unit at the University of St. Andrews (PPP, project title:“SMRU Long-term measurement of marine mammal population structure, dynamics and trophic interactions”, grant reference SMRU1001).en
dc.description.abstractBalancing time allocation among competing behaviours is an essential part of energy management for all animals. However, trade-offs in time allocation may vary according to the sex of the individual, their age, and even underlying physiology. During reproduction, higher energetic demands and constrained internal resources place greater demand on optimizing these trade-offs insofar that small adjustments in time-activity may lead to substantial effects on an individual’s limited energy budget. The most extreme case is found in animals that undergo capital breeding, where individuals fast for the duration of each reproductive episode. We investigated potential underlying drivers of time-activity and describe aspects of trade-offs in time-activity in a wild, capital breeding pinniped, the grey seal Halichoerus grypus, during the lactation period. For the first time, we were able to access full 24-h activity budgets across the core duration of lactation as well as characterize how aspects of stress-coping styles influence time allocation through the use of animal-borne accelerometers and heart rate monitors in situ. We found that there was a distinct trade-off in time activity between time spent Resting and Alert (vigilance). This trade-off varied with the pup’s development, date, and maternal stress-coping style as indicated by a measure of heart rate variability, rMSSD. In contrast, time spent Presenting/Nursing did not vary across the duration of lactation given the variables tested. We suggest that while mothers balance time spent conserving resources (Resting) against time expending energy (Alert), they are also influenced by the inherent physiological drivers of stress-coping styles.
dc.relation.ispartofBehavioral Ecology and Sociobiologyen
dc.rights© The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
dc.subjectMaternal behaviouren
dc.subjectTime-activity allocationen
dc.subjectHeart rate variabilityen
dc.subjectStress-coping stylesen
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.subjectQP Physiologyen
dc.titleCoping styles in capital breeders modulate behavioural trade-offs in time allocation : assessing fine-scale activity budgets in lactating grey seals (Halichoerus grypus) using accelerometry and heart rate variabilityen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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