Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean
This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso’s, bottlenose, short-beaked common dolphins, killer and long-finne...
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ftpubmed:oai:pubmedcentral.nih.gov:6553770 2023-05-15T18:20:49+02:00 Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean Simões Amorim, Thiago Orion Rezende de Castro, Franciele Rodrigues Moron, Juliana Ribeiro Duque, Bruna Couto Di Tullio, Juliana Resende Secchi, Eduardo Andriolo, Artur 2019-06-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6553770/ http://www.ncbi.nlm.nih.gov/pubmed/31170251 https://doi.org/10.1371/journal.pone.0217977 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6553770/ http://www.ncbi.nlm.nih.gov/pubmed/31170251 http://dx.doi.org/10.1371/journal.pone.0217977 © 2019 Simões Amorim et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2019 ftpubmed https://doi.org/10.1371/journal.pone.0217977 2019-06-23T00:17:14Z This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso’s, bottlenose, short-beaked common dolphins, killer and long-finned pilot whales were visually confirmed during recordings with a 3-element omnidirectional hydrophone array. Spectral and time parameters of whistles and echolocation clicks were used in a discriminant function analysis and a classification tree model. As a first step, whistles and clicks were analysed separately; a further analysis consisted of both vocalisations jointly classified. All species showed species-specific properties in their vocalisations. Whistles had greater misclassification rates when compared to clicks. The correct classification was enhanced by the joint step, given the 5.8% error in the discriminant function analysis and a misclassification rate of 18.8% in the tree model. In addition, Receiver Operating Characteristic curves resulting from the tree algorithm analysis exhibited better model efficiency for all species in the joint classification. These findings on acoustical discrimination of such abundant and cosmopolitan species contribute to delphinid classification systems. Text South Atlantic Ocean PubMed Central (PMC) PLOS ONE 14 6 e0217977 |
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Research Article Simões Amorim, Thiago Orion Rezende de Castro, Franciele Rodrigues Moron, Juliana Ribeiro Duque, Bruna Couto Di Tullio, Juliana Resende Secchi, Eduardo Andriolo, Artur Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
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Research Article |
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This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso’s, bottlenose, short-beaked common dolphins, killer and long-finned pilot whales were visually confirmed during recordings with a 3-element omnidirectional hydrophone array. Spectral and time parameters of whistles and echolocation clicks were used in a discriminant function analysis and a classification tree model. As a first step, whistles and clicks were analysed separately; a further analysis consisted of both vocalisations jointly classified. All species showed species-specific properties in their vocalisations. Whistles had greater misclassification rates when compared to clicks. The correct classification was enhanced by the joint step, given the 5.8% error in the discriminant function analysis and a misclassification rate of 18.8% in the tree model. In addition, Receiver Operating Characteristic curves resulting from the tree algorithm analysis exhibited better model efficiency for all species in the joint classification. These findings on acoustical discrimination of such abundant and cosmopolitan species contribute to delphinid classification systems. |
format |
Text |
author |
Simões Amorim, Thiago Orion Rezende de Castro, Franciele Rodrigues Moron, Juliana Ribeiro Duque, Bruna Couto Di Tullio, Juliana Resende Secchi, Eduardo Andriolo, Artur |
author_facet |
Simões Amorim, Thiago Orion Rezende de Castro, Franciele Rodrigues Moron, Juliana Ribeiro Duque, Bruna Couto Di Tullio, Juliana Resende Secchi, Eduardo Andriolo, Artur |
author_sort |
Simões Amorim, Thiago Orion |
title |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
title_short |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
title_full |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
title_fullStr |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
title_full_unstemmed |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean |
title_sort |
integrative bioacoustics discrimination of eight delphinid species in the western south atlantic ocean |
publisher |
Public Library of Science |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6553770/ http://www.ncbi.nlm.nih.gov/pubmed/31170251 https://doi.org/10.1371/journal.pone.0217977 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6553770/ http://www.ncbi.nlm.nih.gov/pubmed/31170251 http://dx.doi.org/10.1371/journal.pone.0217977 |
op_rights |
© 2019 Simões Amorim et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0217977 |
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PLOS ONE |
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14 |
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6 |
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e0217977 |
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1766199265977171968 |