Show simple item record

Files in this item


Item metadata

dc.contributor.authorSharples, Ruth Jemma
dc.contributor.authorMoss, Simon E
dc.contributor.authorPatterson, Toby A
dc.contributor.authorHammond, Philip Steven
dc.identifier.citationSharples , R J , Moss , S E , Patterson , T A & Hammond , P S 2012 , ' Spatial variation in foraging behaviour of a marine top predator (Phoca vitulina) determined by a large-scale satellite tagging program ' , PLoS ONE , vol. 7 , no. 5 , e37216 .
dc.identifier.otherPURE: 16741432
dc.identifier.otherPURE UUID: 8b95c41c-66ca-4359-9c93-5bfccb22fc8c
dc.identifier.otherScopus: 84861312445
dc.identifier.otherORCID: /0000-0002-2381-8302/work/47531596
dc.descriptionThe work was supported by the United Kingdom Department of Trade and industry, now the Department of Energy and Climate Change (http://www. through its Strategic Environmental Assessment programme (http://www.offshore-sea. .uk). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.en
dc.description.abstractThe harbour seal (Phoca vitulina) is a widespread marine predator in Northern Hemisphere waters. British populations have been subject to rapid declines in recent years. Food supply or inter-specific competition may be implicated but basic ecological data are lacking and there are few studies of harbour seal foraging distribution and habits. In this study, satellite tagging conducted at the major seal haul outs around the British Isles showed both that seal movements were highly variable among individuals and that foraging strategy appears to be specialized within particular regions. We investigated whether these apparent differences could be explained by individual level factors: by modelling measures of trip duration and distance travelled as a function of size, sex and body condition. However, these were not found to be good predictors of foraging trip duration or distance, which instead was best predicted by tagging region, time of year and inter-trip duration. Therefore, we propose that local habitat conditions and the constraints they impose are the major determinants of foraging movements. Specifically the distance to profitable feeding grounds from suitable haul-out locations may dictate foraging strategy and behaviour. Accounting for proximity to productive foraging resources is likely to be an important component of understanding population processes. Despite more extensive offshore movements than expected, there was also marked fidelity to the local haul-out region with limited connectivity between study regions. These empirical observations of regional exchange at short time scales demonstrates the value of large scale electronic tagging programs for robust characterization of at-sea foraging behaviour at a wide spatial scale.
dc.relation.ispartofPLoS ONEen
dc.rights© 2012 Sharples et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectHarbour sealen
dc.subjectQL Zoologyen
dc.titleSpatial variation in foraging behaviour of a marine top predator (Phoca vitulina) determined by a large-scale satellite tagging programen
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.Centre for Research into Ecological & Environmental Modellingen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Sea Mammal Research Uniten
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record