Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli)
This study was funded by the Aarhus University Research Foundation, the Danish Ministry of Environment (Jagttegnsmidlerne) and by frame grants to PTM from the National Danish Science Research Council. RW was supported by a Marie Curie International Incoming Fellowship within the 7th European Communi...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/5027 2023-07-02T03:32:30+02:00 Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) Kyhn, Line A. Tougaard, Jakob Beedholm, Kristian Jensen, Frants H. Ashe, Erin Madsen, Peter T. Williams, Robert University of St Andrews. School of Biology 2014-07-16T14:31:02Z 12 application/pdf http://hdl.handle.net/10023/5027 https://doi.org/10.1371/journal.pone.0063763 eng eng PLoS One Kyhn , L A , Tougaard , J , Beedholm , K , Jensen , F H , Ashe , E , Madsen , P T & Williams , R 2013 , ' Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) ' , PLoS One , vol. 8 , no. 5 , e63763 . https://doi.org/10.1371/journal.pone.0063763 1932-6203 PURE: 131396460 PURE UUID: cffd4a1c-25bd-4192-a71b-36f2e6da7ab7 WOS: 000319733000020 Scopus: 84878414871 http://hdl.handle.net/10023/5027 https://doi.org/10.1371/journal.pone.0063763 Copyright: © 2013 Kyhn et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. http://creativecommons.org/licenses/by/3.0/ Transmission beam pattern Echolocation signals Neophocaena-phocaenoides Orcinus-orca Pseudorca-crassidens British-columbia Tonal signals Dolphins kHz Sonar QL Zoology QL Journal article 2014 ftstandrewserep https://doi.org/10.1371/journal.pone.0063763 2023-06-13T18:29:52Z This study was funded by the Aarhus University Research Foundation, the Danish Ministry of Environment (Jagttegnsmidlerne) and by frame grants to PTM from the National Danish Science Research Council. RW was supported by a Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme, and FHJ by a postdoctoral fellowship from the Danish Council for Independent Research | Natural Sciences. Odontocetes produce a range of different echolocation clicks but four groups in different families have converged on producing the same stereotyped narrow band high frequency (NBHF) click. In microchiropteran bats, sympatric species have evolved the use of different acoustic niches and subtly different echolocation signals to avoid competition among species. In this study, we examined whether similar adaptations are at play among sympatric porpoise species that use NBHF echolocation clicks. We used a six-element hydrophone array to record harbour and Dall's porpoises in British Columbia (BC), Canada, and harbour porpoises in Denmark. The click source properties of all porpoise groups were remarkably similar and had an average directivity index of 25 dB. Yet there was a small, but consistent and significant 4 kHz difference in centroid frequency between sympatric Dall's (137 +/- 3 kHz) and Canadian harbour porpoises (141 +/- 2 kHz). Danish harbour porpoise clicks (136 +/- 3 kHz) were more similar to Dall's porpoise than to their conspecifics in Canada. We suggest that the spectral differences in echolocation clicks between the sympatric porpoises are consistent with evolution of a prezygotic isolating barrier (i.e., character displacement) to avoid hybridization of sympatric species. In practical terms, these spectral differences have immediate application to passive acoustic monitoring. Publisher PDF Peer reviewed Article in Journal/Newspaper Harbour porpoise Killer Whale Orca Orcinus orca Phocoena phocoena Killer whale University of St Andrews: Digital Research Repository British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada PLoS ONE 8 5 e63763 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Transmission beam pattern Echolocation signals Neophocaena-phocaenoides Orcinus-orca Pseudorca-crassidens British-columbia Tonal signals Dolphins kHz Sonar QL Zoology QL |
spellingShingle |
Transmission beam pattern Echolocation signals Neophocaena-phocaenoides Orcinus-orca Pseudorca-crassidens British-columbia Tonal signals Dolphins kHz Sonar QL Zoology QL Kyhn, Line A. Tougaard, Jakob Beedholm, Kristian Jensen, Frants H. Ashe, Erin Madsen, Peter T. Williams, Robert Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
topic_facet |
Transmission beam pattern Echolocation signals Neophocaena-phocaenoides Orcinus-orca Pseudorca-crassidens British-columbia Tonal signals Dolphins kHz Sonar QL Zoology QL |
description |
This study was funded by the Aarhus University Research Foundation, the Danish Ministry of Environment (Jagttegnsmidlerne) and by frame grants to PTM from the National Danish Science Research Council. RW was supported by a Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme, and FHJ by a postdoctoral fellowship from the Danish Council for Independent Research | Natural Sciences. Odontocetes produce a range of different echolocation clicks but four groups in different families have converged on producing the same stereotyped narrow band high frequency (NBHF) click. In microchiropteran bats, sympatric species have evolved the use of different acoustic niches and subtly different echolocation signals to avoid competition among species. In this study, we examined whether similar adaptations are at play among sympatric porpoise species that use NBHF echolocation clicks. We used a six-element hydrophone array to record harbour and Dall's porpoises in British Columbia (BC), Canada, and harbour porpoises in Denmark. The click source properties of all porpoise groups were remarkably similar and had an average directivity index of 25 dB. Yet there was a small, but consistent and significant 4 kHz difference in centroid frequency between sympatric Dall's (137 +/- 3 kHz) and Canadian harbour porpoises (141 +/- 2 kHz). Danish harbour porpoise clicks (136 +/- 3 kHz) were more similar to Dall's porpoise than to their conspecifics in Canada. We suggest that the spectral differences in echolocation clicks between the sympatric porpoises are consistent with evolution of a prezygotic isolating barrier (i.e., character displacement) to avoid hybridization of sympatric species. In practical terms, these spectral differences have immediate application to passive acoustic monitoring. Publisher PDF Peer reviewed |
author2 |
University of St Andrews. School of Biology |
format |
Article in Journal/Newspaper |
author |
Kyhn, Line A. Tougaard, Jakob Beedholm, Kristian Jensen, Frants H. Ashe, Erin Madsen, Peter T. Williams, Robert |
author_facet |
Kyhn, Line A. Tougaard, Jakob Beedholm, Kristian Jensen, Frants H. Ashe, Erin Madsen, Peter T. Williams, Robert |
author_sort |
Kyhn, Line A. |
title |
Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
title_short |
Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
title_full |
Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
title_fullStr |
Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
title_full_unstemmed |
Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) |
title_sort |
clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (phocoena phocoena) and dall's porpoise (phocoenoides dalli) |
publishDate |
2014 |
url |
http://hdl.handle.net/10023/5027 https://doi.org/10.1371/journal.pone.0063763 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Harbour porpoise Killer Whale Orca Orcinus orca Phocoena phocoena Killer whale |
genre_facet |
Harbour porpoise Killer Whale Orca Orcinus orca Phocoena phocoena Killer whale |
op_relation |
PLoS One Kyhn , L A , Tougaard , J , Beedholm , K , Jensen , F H , Ashe , E , Madsen , P T & Williams , R 2013 , ' Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) ' , PLoS One , vol. 8 , no. 5 , e63763 . https://doi.org/10.1371/journal.pone.0063763 1932-6203 PURE: 131396460 PURE UUID: cffd4a1c-25bd-4192-a71b-36f2e6da7ab7 WOS: 000319733000020 Scopus: 84878414871 http://hdl.handle.net/10023/5027 https://doi.org/10.1371/journal.pone.0063763 |
op_rights |
Copyright: © 2013 Kyhn et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0063763 |
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PLoS ONE |
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8 |
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