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dc.contributor.authorQuick, Nicola
dc.contributor.authorScott-Hayward, Lindesay
dc.contributor.authorSadykova, Dinara
dc.contributor.authorNowacek, Doug
dc.contributor.authorRead, Andrew
dc.identifier.citationQuick , N , Scott-Hayward , L , Sadykova , D , Nowacek , D & Read , A 2017 , ' Effects of a scientific echo sounder on the behavior of short-finned pilot whales ( Globicephala macrorhynchus ) ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 74 , no. 5 , pp. 716-726 .
dc.identifier.otherPURE: 246059868
dc.identifier.otherPURE UUID: 6faaa878-a9ec-4189-952c-8fb665a29193
dc.identifier.otherScopus: 85021161805
dc.identifier.otherWOS: 000400011100008
dc.identifier.otherORCID: /0000-0003-3402-533X/work/73700885
dc.descriptionThis work was supported by award RC-2154 from the Strategic Environmental Research and Development Program and funding from the Naval Facilities Engineering Command Atlantic and NOAA Fisheries, Southeast Region.en
dc.description.abstractActive echo sounding devices are often employed for commercial or scientific purposes in the foraging habitats of marine mammals. We conducted an experiment off Cape Hatteras, North Carolina, USA, to assess whether the behavior of short-finned pilot whales (Globicephala macrorhynchus) changed when exposed to an EK60 scientific echo sounder. We attached digital acoustic recording tags (DTAGs) to nine individuals, five of which were exposed. A hidden Markov model to characterize diving states with and without exposure provided no evidence for a change in foraging behavior. However, generalized estimating equations to model changes in heading variance over the entire tag record under all experimental conditions showed a consistent increase in heading variance during exposure over all values of depth and pitch. This suggests that regardless of behavioral state, the whales changed their heading more frequently when the echo sounder was active. This response could represent increased vigilance in which whales maintained awareness of echo sounder location by increasing their heading variance and provides the first quantitative analysis on reactions of cetaceans to a scientific echo sounder.
dc.relation.ispartofCanadian Journal of Fisheries and Aquatic Sciencesen
dc.rights© 2016, the Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectEcho sounderen
dc.subjectPilot whalesen
dc.subjectBehavioural responseen
dc.subjectHidden Markov modelen
dc.subjectGE Environmental Sciencesen
dc.subjectQA Mathematicsen
dc.subjectQH301 Biologyen
dc.titleEffects of a scientific echo sounder on the behavior of short-finned pilot whales (Globicephala macrorhynchus)en
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.Statisticsen
dc.contributor.institutionUniversity of St Andrews.School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews.Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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