Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification
Vocal 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...
Published in: | Journal of Experimental Biology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/characterizing-chilean-blue-whale-vocalizations-with-dtags(529ec5c0-cef7-4fbf-9880-90e3a2fc4eaf).html https://doi.org/10.1242/jeb.151498 https://research-repository.st-andrews.ac.uk/bitstream/10023/16464/1/Hickmott_2017_JEB_Chileanbluewhale_FinalPubVersion.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/529ec5c0-cef7-4fbf-9880-90e3a2fc4eaf 2023-05-15T15:36:20+02:00 Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification Saddler, Mark R. Bocconcelli, Alessandro Hickmott, Leigh S. Chiang, Gustavo Landea-Briones, Rafaela Bahamonde, Paulina A. Howes, Gloria Segre, Paolo S. Sayigh, Laela S. 2017-11-15 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/characterizing-chilean-blue-whale-vocalizations-with-dtags(529ec5c0-cef7-4fbf-9880-90e3a2fc4eaf).html https://doi.org/10.1242/jeb.151498 https://research-repository.st-andrews.ac.uk/bitstream/10023/16464/1/Hickmott_2017_JEB_Chileanbluewhale_FinalPubVersion.pdf eng eng info:eu-repo/semantics/openAccess Saddler , M R , Bocconcelli , A , Hickmott , L S , Chiang , G , Landea-Briones , R , Bahamonde , P A , Howes , G , Segre , P S & Sayigh , L S 2017 , ' Characterizing Chilean blue whale vocalizations with DTAGs : a test of using tag accelerometers for caller identification ' , Journal of Experimental Biology , vol. 220 , no. 22 , pp. 4119-4129 . https://doi.org/10.1242/jeb.151498 Balaenoptera musculus Acoustic behavior DTAG Downsweep call D call Cross-correlation article 2017 ftunstandrewcris https://doi.org/10.1242/jeb.151498 2021-12-26T14:31:19Z Vocal 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. Article in Journal/Newspaper Balaenoptera musculus Blue whale University of St Andrews: Research Portal Austral Pacific Journal of Experimental Biology |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Balaenoptera musculus Acoustic behavior DTAG Downsweep call D call Cross-correlation |
spellingShingle |
Balaenoptera musculus Acoustic behavior DTAG Downsweep call D call Cross-correlation Saddler, Mark R. Bocconcelli, Alessandro Hickmott, Leigh S. Chiang, Gustavo Landea-Briones, Rafaela Bahamonde, Paulina A. Howes, Gloria Segre, Paolo S. Sayigh, Laela S. Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
topic_facet |
Balaenoptera musculus Acoustic behavior DTAG Downsweep call D call Cross-correlation |
description |
Vocal 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. |
format |
Article in Journal/Newspaper |
author |
Saddler, Mark R. Bocconcelli, Alessandro Hickmott, Leigh S. Chiang, Gustavo Landea-Briones, Rafaela Bahamonde, Paulina A. Howes, Gloria Segre, Paolo S. Sayigh, Laela S. |
author_facet |
Saddler, Mark R. Bocconcelli, Alessandro Hickmott, Leigh S. Chiang, Gustavo Landea-Briones, Rafaela Bahamonde, Paulina A. Howes, Gloria Segre, Paolo S. Sayigh, Laela S. |
author_sort |
Saddler, Mark R. |
title |
Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
title_short |
Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
title_full |
Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
title_fullStr |
Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
title_full_unstemmed |
Characterizing Chilean blue whale vocalizations with DTAGs:a test of using tag accelerometers for caller identification |
title_sort |
characterizing chilean blue whale vocalizations with dtags:a test of using tag accelerometers for caller identification |
publishDate |
2017 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/characterizing-chilean-blue-whale-vocalizations-with-dtags(529ec5c0-cef7-4fbf-9880-90e3a2fc4eaf).html https://doi.org/10.1242/jeb.151498 https://research-repository.st-andrews.ac.uk/bitstream/10023/16464/1/Hickmott_2017_JEB_Chileanbluewhale_FinalPubVersion.pdf |
geographic |
Austral Pacific |
geographic_facet |
Austral Pacific |
genre |
Balaenoptera musculus Blue whale |
genre_facet |
Balaenoptera musculus Blue whale |
op_source |
Saddler , M R , Bocconcelli , A , Hickmott , L S , Chiang , G , Landea-Briones , R , Bahamonde , P A , Howes , G , Segre , P S & Sayigh , L S 2017 , ' Characterizing Chilean blue whale vocalizations with DTAGs : a test of using tag accelerometers for caller identification ' , Journal of Experimental Biology , vol. 220 , no. 22 , pp. 4119-4129 . https://doi.org/10.1242/jeb.151498 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1242/jeb.151498 |
container_title |
Journal of Experimental Biology |
_version_ |
1766366680346263552 |