Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat
Bottlenose dolphins (Tursiops sp.) depend on frequency-modulated whistles for many aspects of their social behavior, including group cohesion and recognition of familiar individuals. Vocalization amplitude and frequency influences communication range and may be shaped by many ecological and physiolo...
Published in: | The Journal of the Acoustical Society of America |
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American Institute of Physics for the Acoustical Society of America
2012
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Online Access: | https://doi.org/10.1121/1.3662067 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Estimated-communication-range-and-energetic-cost/991005545562907891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12136675260007891/13136854800007891 |
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ftmurdochunivall:oai:alma.61MUN_INST:11136675270007891 2024-09-15T18:39:12+00:00 Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat Jensen, F.H. Beedholm, K. Wahlberg, M. Bejder, L. Madsen, P.T. 2012 pdf https://doi.org/10.1121/1.3662067 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Estimated-communication-range-and-energetic-cost/991005545562907891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12136675260007891/13136854800007891 eng eng American Institute of Physics for the Acoustical Society of America ispartof: The Journal of the Acoustical Society of America spage 582 epage 592 issue 1 vol 131 doi:10.1121/1.3662067 WOS:000299130700068 00014966 http://dx.doi.org/10.1121/1.3662067 991005545562907891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Estimated-communication-range-and-energetic-cost/991005545562907891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12136675260007891/13136854800007891 alma:61MUN_INST/bibs/991005545562907891 © 2012 Acoustical Society of America. Open text Article 2012 ftmurdochunivall https://doi.org/10.1121/1.3662067 2024-08-15T00:52:48Z Bottlenose dolphins (Tursiops sp.) depend on frequency-modulated whistles for many aspects of their social behavior, including group cohesion and recognition of familiar individuals. Vocalization amplitude and frequency influences communication range and may be shaped by many ecological and physiological factors including energetic costs. Here, a calibrated GPS-synchronized hydrophone array was used to record the whistles of bottlenose dolphins in a tropical shallow-water environment with high ambient noise levels. Acoustic localization techniques were used to estimate the source levels and energy content of individual whistles. Bottlenose dolphins produced whistles with mean source levels of 146.7 +/- 6.2 dB re. 1 mu Pa(RMS). These were lower than source levels estimated for a population inhabiting the quieter Moray Firth, indicating that dolphins do not necessarily compensate for the high noise levels found in noisy tropical habitats by increasing their source level. Combined with measured transmission loss and noise levels, these source levels provided estimated median communication ranges of 750 m and maximum communication ranges up to 5740 m. Whistles contained less than 17 mJ of acoustic energy, showing that the energetic cost of whistling is small compared to the high metabolic rate of these aquatic mammals, and unlikely to limit the vocal activity of toothed whales. Article in Journal/Newspaper toothed whales Murdoch University Research Portal The Journal of the Acoustical Society of America 131 1 582 592 |
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Murdoch University Research Portal |
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ftmurdochunivall |
language |
English |
description |
Bottlenose dolphins (Tursiops sp.) depend on frequency-modulated whistles for many aspects of their social behavior, including group cohesion and recognition of familiar individuals. Vocalization amplitude and frequency influences communication range and may be shaped by many ecological and physiological factors including energetic costs. Here, a calibrated GPS-synchronized hydrophone array was used to record the whistles of bottlenose dolphins in a tropical shallow-water environment with high ambient noise levels. Acoustic localization techniques were used to estimate the source levels and energy content of individual whistles. Bottlenose dolphins produced whistles with mean source levels of 146.7 +/- 6.2 dB re. 1 mu Pa(RMS). These were lower than source levels estimated for a population inhabiting the quieter Moray Firth, indicating that dolphins do not necessarily compensate for the high noise levels found in noisy tropical habitats by increasing their source level. Combined with measured transmission loss and noise levels, these source levels provided estimated median communication ranges of 750 m and maximum communication ranges up to 5740 m. Whistles contained less than 17 mJ of acoustic energy, showing that the energetic cost of whistling is small compared to the high metabolic rate of these aquatic mammals, and unlikely to limit the vocal activity of toothed whales. |
format |
Article in Journal/Newspaper |
author |
Jensen, F.H. Beedholm, K. Wahlberg, M. Bejder, L. Madsen, P.T. |
spellingShingle |
Jensen, F.H. Beedholm, K. Wahlberg, M. Bejder, L. Madsen, P.T. Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
author_facet |
Jensen, F.H. Beedholm, K. Wahlberg, M. Bejder, L. Madsen, P.T. |
author_sort |
Jensen, F.H. |
title |
Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
title_short |
Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
title_full |
Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
title_fullStr |
Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
title_full_unstemmed |
Estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
title_sort |
estimated communication range and energetic cost of bottlenose dolphin whistles in a tropical habitat |
publisher |
American Institute of Physics for the Acoustical Society of America |
publishDate |
2012 |
url |
https://doi.org/10.1121/1.3662067 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Estimated-communication-range-and-energetic-cost/991005545562907891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12136675260007891/13136854800007891 |
genre |
toothed whales |
genre_facet |
toothed whales |
op_relation |
ispartof: The Journal of the Acoustical Society of America spage 582 epage 592 issue 1 vol 131 doi:10.1121/1.3662067 WOS:000299130700068 00014966 http://dx.doi.org/10.1121/1.3662067 991005545562907891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Estimated-communication-range-and-energetic-cost/991005545562907891 https://researchportal.murdoch.edu.au/view/delivery/61MUN_INST/12136675260007891/13136854800007891 alma:61MUN_INST/bibs/991005545562907891 |
op_rights |
© 2012 Acoustical Society of America. Open |
op_doi |
https://doi.org/10.1121/1.3662067 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
131 |
container_issue |
1 |
container_start_page |
582 |
op_container_end_page |
592 |
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