Show simple item record

Files in this item


Item metadata

dc.contributor.authorIorio-Merlo, Virginia
dc.contributor.authorGraham, Isla
dc.contributor.authorHewitt, Rebecca
dc.contributor.authorAarts, Geert
dc.contributor.authorPirotta, Enrico
dc.contributor.authorHastie, Gordon Drummond
dc.contributor.authorThompson, Paul
dc.identifier.citationIorio-Merlo , V , Graham , I , Hewitt , R , Aarts , G , Pirotta , E , Hastie , G D & Thompson , P 2022 , ' Prey encounters and spatial memory influence use of foraging patches in a marine central place forager ' , Proceedings of the Royal Society B: Biological Sciences , vol. 289 , no. 1970 , 20212261 .
dc.identifier.otherORCID: /0000-0002-9773-2755/work/109766605
dc.identifier.otherORCID: /0000-0003-3541-3676/work/109766909
dc.descriptionThis study was carried out as part of the Moray Firth Marine Mammal Monitoring Programme, a joint industry, academic and government strategic research project with funding from Beatrice Offshore Wind Ltd and Moray Offshore Renewables Ltd (MORL).en
dc.description.abstractGiven the patchiness and long-term predictability of marine resources, memory of high-quality foraging grounds is expected to provide fitness advantages for central place foragers. However, it remains challenging to characterize how marine predators integrate memory with recent prey encounters to adjust fine-scale movement and use of foraging patches. Here, we used two months of movement data from harbour seals (Phoca vitulina) to quantify the repeatability in foraging patches as a proxy for memory. We then integrated these data into analyses of fine-scale movement and underwater behaviour to test how both spatial memory and prey encounter rates influenced the seals' area-restricted search (ARS) behaviour. Specifically, we used one month's GPS data from 29 individuals to build spatial memory maps of searched areas and archived accelerometery data from a subset of five individuals to detect prey catch attempts, a proxy for prey encounters. Individuals were highly consistent in the areas they visited over two consecutive months. Hidden Markov models showed that both spatial memory and prey encounters increased the probability of seals initiating ARS. These results provide evidence that predators use memory to adjust their fine-scale movement, and this ability should be accounted for in movement models.
dc.relation.ispartofProceedings of the Royal Society B: Biological Sciencesen
dc.subjectArea-restricted searchen
dc.subjectSpatial memoryen
dc.subjectHidden Markov Modelen
dc.subjectHarbour sealsen
dc.subjectGC Oceanographyen
dc.subjectHA Statisticsen
dc.subjectSDG 14 - Life Below Wateren
dc.titlePrey encounters and spatial memory influence use of foraging patches in a marine central place forageren
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
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