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dc.contributor.authorSaddler, Mark R.  Concept link
dc.contributor.authorBocconcelli, Alessandro  Concept link
dc.contributor.authorHickmott, Leigh S.  Concept link
dc.contributor.authorChiang, Gustavo  Concept link
dc.contributor.authorLandea Briones, Rafaela  Concept link
dc.contributor.authorBahamonde, Paulina A.  Concept link
dc.contributor.authorHowes, Gloria  Concept link
dc.contributor.authorSegre, Paolo S.  Concept link
dc.contributor.authorSayigh, Laela S.  Concept link
dc.date.accessioned2017-11-16T18:07:37Z
dc.date.available2018-10-12T16:43:46Z
dc.date.issued2017-09-07
dc.identifier.citationJournal of Experimental Biology 220 (2017): 4119-4129en_US
dc.identifier.urihttps://hdl.handle.net/1912/9377
dc.descriptionAuthor Posting. © Company of Biologists, 2017. This article is posted here by permission of Company of Biologists for personal use, not for redistribution. The definitive version was published in Journal of Experimental Biology 220 (2017): 4119-4129, doi: 10.1242/jeb.151498.en_US
dc.description.abstractVocal behavior of blue whales (Balaenoptera musculus) in the Gulf of Corcovado, Chile, was analysed using both audio and accelerometer data from digital acoustic recording tags (DTAGs). Over the course of three austral summers (2014, 2015 and 2016), seventeen tags were deployed, yielding 124 h of data. We report the occurrence of Southeast Pacific type 2 (SEP2) calls, which exhibit peak frequencies, durations and timing consistent with previous recordings made using towed and moored hydrophones. We also describe tonal downswept (D) calls, which have not been previously described for this population. As being able to accurately assign vocalizations to individual whales is fundamental for studying communication and for estimating population densities from call rates, we further examine the feasibility of using high-resolution DTAG accelerometers to identify low-frequency calls produced by tagged blue whales. We cross-correlated acoustic signals with simultaneous tri-axial accelerometer readings in order to analyse the phase match as well as the amplitude of accelerometer signals associated with low-frequency calls, which provides a quantitative method of determining if a call is associated with a detectable acceleration signal. Our results suggest that vocalizations from nearby individuals are also capable of registering accelerometer signals in the tagged whale's DTAG record. We cross-correlate acceleration vectors between calls to explore the possibility of using signature acceleration patterns associated with sounds produced within the tagged whale as a new method of identifying which accelerometer-detectable calls originate from the tagged animal.en_US
dc.description.sponsorshipFieldwork for this project was funded by the Melimoyu Ecosystem Research Institute Foundation and the Woods Hole Oceanographic Institution. Analysis was supported by a Woods Hole Oceanographic Institution Summer Student Fellowship.en_US
dc.language.isoen_USen_US
dc.publisherCompany of Biologistsen_US
dc.relation.urihttps://doi.org/10.1242/jeb.151498
dc.subjectBalaenoptera musculusen_US
dc.subjectAcoustic behavioren_US
dc.subjectDTAGen_US
dc.subjectDownsweep callen_US
dc.subjectD callen_US
dc.subjectCross-correlationen_US
dc.titleCharacterizing Chilean blue whale vocalizations with DTAGs : a test of using tag accelerometers for caller identificationen_US
dc.typeArticleen_US
dc.description.embargo2018-09-07en_US
dc.identifier.doi10.1242/jeb.151498


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