Characterizing Chilean blue whale vocalizations with DTAGs : a test of using tag accelerometers for caller identification
Author 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. Vocal behavior of blue wh...
Published in: | Journal of Experimental Biology |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Company of Biologists
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/9377 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9377 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9377 2023-05-15T15:36:21+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. 2017-09-07 https://hdl.handle.net/1912/9377 en_US eng Company of Biologists https://doi.org/10.1242/jeb.151498 Journal of Experimental Biology 220 (2017): 4119-4129 https://hdl.handle.net/1912/9377 doi:10.1242/jeb.151498 Journal of Experimental Biology 220 (2017): 4119-4129 doi:10.1242/jeb.151498 Balaenoptera musculus Acoustic behavior DTAG Downsweep call D call Cross-correlation Article 2017 ftwhoas https://doi.org/10.1242/jeb.151498 2022-05-28T23:00:04Z Author 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. 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. Fieldwork for this project was funded by the Melimoyu Ecosystem Research Institute ... Article in Journal/Newspaper Balaenoptera musculus Blue whale Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Austral Pacific Journal of Experimental Biology |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
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 |
Author 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. 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. Fieldwork for this project was funded by the Melimoyu Ecosystem Research Institute ... |
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 |
publisher |
Company of Biologists |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9377 |
geographic |
Austral Pacific |
geographic_facet |
Austral Pacific |
genre |
Balaenoptera musculus Blue whale |
genre_facet |
Balaenoptera musculus Blue whale |
op_source |
Journal of Experimental Biology 220 (2017): 4119-4129 doi:10.1242/jeb.151498 |
op_relation |
https://doi.org/10.1242/jeb.151498 Journal of Experimental Biology 220 (2017): 4119-4129 https://hdl.handle.net/1912/9377 doi:10.1242/jeb.151498 |
op_doi |
https://doi.org/10.1242/jeb.151498 |
container_title |
Journal of Experimental Biology |
_version_ |
1766366693663178752 |