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dc.contributor.authorGoulet, Pauline
dc.contributor.authorGuinet, Christophe
dc.contributor.authorCampagna, Claudio
dc.contributor.authorCampagna, Julieta
dc.contributor.authorTyack, Peter Lloyd
dc.contributor.authorJohnson, Mark
dc.identifier.citationGoulet , P , Guinet , C , Campagna , C , Campagna , J , Tyack , P L & Johnson , M 2020 , ' Flash and grab : deep-diving southern elephant seals trigger anti-predator flashes in bioluminescent prey ' , Journal of Experimental Biology , vol. 223 , no. 10 , jeb.222810 .
dc.identifier.otherORCID: /0000-0002-8409-4790/work/74510262
dc.descriptionFunding: Fondation BNP Paribas; Centre National d'Etudes Spatiales; Institut Polaire Français Paul Emile Victor; Natural Environment Research Council; H2020 Marie Skłodowska-Curie Actions.en
dc.description.abstractBioluminescence, which occurs in approximately 80% of the world's mesopelagic fauna, can take the form of a low-intensity continuous glow (e.g. for counter-illumination or signalling) or fast repetitions of brighter anti-predatory flashes. The southern elephant seal (SES) is a major consumer of mesopelagic organisms, in particular the abundant myctophid fish, yet the fine-scale relationship between this predator's foraging behaviour and bioluminescent prey remains poorly understood. We hypothesised that brief, intense light emissions should be closely connected with prey strikes when the seal is targeting bioluminescent prey that reacts by emitting anti-predator flashes. To test this, we developed a biologging device containing a fast-sampling light sensor together with location and movement sensors to measure simultaneously anti-predator bioluminescent emissions and the predator's attack motions with a 20 ms resolution. Tags were deployed on female SES breeding at Kerguelen Islands and Península Valdés, Argentina. In situ light levels in combination with duration of prey capture attempts indicated that seals were targeting a variety of prey types. For some individuals, bioluminescent flashes occurred in a large proportion of prey strikes, with the timing of flashes closely connected with the predator's attack motion, suggestive of anti-predator emissions. Marked differences across individuals and location indicate that SES do exploit bioluminescent organisms but the proportion of these in the diet varies widely with location. The combination of wideband light and acceleration data provides new insight into where and when different prey types are encountered and how effectively they might be captured.
dc.relation.ispartofJournal of Experimental Biologyen
dc.subjectAnti-predator tacticen
dc.subjectMirounga leoninaen
dc.subjectForaging ecologyen
dc.subjectPredator-prey interactionsen
dc.subjectQH301 Biologyen
dc.titleFlash and grab : deep-diving southern elephant seals trigger anti-predator flashes in bioluminescent preyen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Commissionen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Centre for Social Learning & Cognitive Evolutionen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Sound Tags Groupen
dc.contributor.institutionUniversity of St Andrews. Bioacoustics groupen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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