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dc.contributor.authorNøttestad, L.
dc.contributor.authorSivle, L.D.
dc.contributor.authorKrafft, B.A.
dc.contributor.authorLangård, L.
dc.contributor.authorAnthonypillai, V.
dc.contributor.authorBernasconi, M.
dc.contributor.authorLangøy, H.
dc.contributor.authorFernö, A.
dc.identifier.citationNøttestad , L , Sivle , L D , Krafft , B A , Langård , L , Anthonypillai , V , Bernasconi , M , Langøy , H & Fernö , A 2014 , ' Prey selection of offshore killer whales Orcinus orca in the Northeast Atlantic in late summer : spatial associations with mackerel ' , Marine Ecology Progress Series , vol. 499 , pp. 275-283 .
dc.identifier.otherPURE: 145962577
dc.identifier.otherPURE UUID: 9342a324-ff6d-4715-b825-753ff0e8e7e1
dc.identifier.otherScopus: 84895515228
dc.identifier.otherWOS: 000332225000020
dc.description.abstractThe traditional perception of prey species preference of killer whales Orcinus orca L. in the Northeast Atlantic has, to a large extent, been linked to herring Clupea harengus L. Few studies have investigated the feeding ecology of killer whales from the offshore parts of this ecosystem. We conducted 2 summer-season ecosystem-based surveys in the Norwegian Sea, when it is most crucial for these animals to build up their energy reserves, using observational, acoustic, oceanographic, plankton net, and pelagic trawl haul data to quantify any spatial overlap between killer whales and the 3 most common and abundant pelagic fish species: herring, mackerel Scomber scombrus L., and blue whiting Micromesistius poutassou R. No spatial relationships were found between killer whales and herring or blue whiting. However, there was a significant relationship and spatial overlap between killer whales and mackerel. Feeding on this epipelagic schooling fish species during summer may incur lower migration costs and higher energetic gain than feeding on alternative prey. Killer whale group size was also correlated to the size of mackerel trawl catches, indicating active group size adjustment to available prey concentrations.
dc.relation.ispartofMarine Ecology Progress Seriesen
dc.rights© The authors 2014. Open Access under Creative Commons by Attribution Licence ( Use, distribution and reproduction are unrestricted. Authors and original publication must be credited.en
dc.subjectFeeding ecologyen
dc.subjectSpatial overlapen
dc.subjectNortheast Atlantic mackerelen
dc.subjectNorwegian spring-spawning herringen
dc.subjectQH301 Biologyen
dc.titlePrey selection of offshore killer whales Orcinus orca in the Northeast Atlantic in late summer : spatial associations with mackerelen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.description.statusPeer revieweden

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