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dc.contributor.authorWisniewska, D.M.
dc.contributor.authorRatcliffe, J.M.
dc.contributor.authorBeedholm, K.
dc.contributor.authorChristensen, C.B.
dc.contributor.authorJohnson, Mark
dc.contributor.authorKoblitz, J.C.
dc.contributor.authorWahlberg, M.
dc.contributor.authorMadsen, P.T.
dc.identifier.citationWisniewska , D M , Ratcliffe , J M , Beedholm , K , Christensen , C B , Johnson , M , Koblitz , J C , Wahlberg , M & Madsen , P T 2015 , ' Range-dependent flexibility in the acoustic field of view of echolocating porpoises ( Phocoena phocoena ) ' , eLife , vol. 4 , e05651 .
dc.identifier.otherPURE: 180134416
dc.identifier.otherPURE UUID: 7c5181aa-f6a0-4302-826f-c75bdd0db905
dc.identifier.otherScopus: 84925389234
dc.identifier.otherWOS: 000351866300003
dc.descriptionFunding: Det Frie Forskningsrad (MJ)en
dc.description.abstractToothed whales use sonar to detect, locate, and track prey. They adjust emitted sound intensity, auditory sensitivity and click rate to target range, and terminate prey pursuits with high-repetition-rate, low-intensity buzzes. However, their narrow acoustic field of view (FOV) is considered stable throughout target approach, which could facilitate prey escape at close-range. Here we show that, like some bats, harbour porpoises can broaden their biosonar beam during the terminal phase of attack but, unlike bats, maintain the ability to change beamwidth within this phase. Based on video, MRI, and acoustic-tag recordings, we propose this flexibility is modulated by the melon and implemented to accommodate dynamic spatial relationships with prey and acoustic complexity of surroundings. Despite independent evolution and different means of sound generation and transmission, whales and bats adaptively change their FOV, suggesting that beamwidth flexibility has been an important driver in the evolution of echolocation for prey tracking.
dc.rightsCopyright Wisniewska et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited.en
dc.subjectPrey captureen
dc.subjectConvergent evolutionen
dc.subjectQH301 Biologyen
dc.subjectQL Zoologyen
dc.titleRange-dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena)en
dc.typeJournal articleen
dc.contributor.sponsorEuropean Commissionen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Sound Tags Groupen
dc.contributor.institutionUniversity of St Andrews. Bioacoustics groupen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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