Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia
Resident killer whales off British Columbia form four acoustically distinct clans, each with a unique dialect of discrete pulsed calls. Three clans belong to the northern and one to the southern community. Resident killer whales also produce tonal whistles, which play an important role in close-rang...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.456.5909 2023-05-15T17:53:54+02:00 Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia John K. B. Ford Frank Thomsen The Pennsylvania State University CiteSeerX Archives 2004 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.456.5909 http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.456.5909 http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf text 2004 ftciteseerx 2016-01-08T06:14:19Z Resident killer whales off British Columbia form four acoustically distinct clans, each with a unique dialect of discrete pulsed calls. Three clans belong to the northern and one to the southern community. Resident killer whales also produce tonal whistles, which play an important role in close-range communication within the northern community. However, there has been no comparative analysis of repertoires of whis-tles across clans. We investigated the structural characteristics, stability and group specificity of whistles in resident killer whales off British Columbia. Acoustic recordings and behavioural observations were made between 1978 and 2003. Whistles were classified spectrographically and additional observers were used to confirm our classification. Whistles were compared across clans using discriminant function analysis. We found 11 types of stereotyped whistles in the northern and four in the southern community with some of the whistle types being stable over at least 13 years. In northern residents, 10 of the 11 whistle types were structurally identical in two of the three acoustic clans, whereas the whistle types of southern residents differed clearly from those of the northern residents. Our study shows that killer whales that have no overlap in their call repertoire use essentially the same set of stereotyped whistles. Shared stereotyped whistles might provide a community-level means of recognition that facilitates association and affiliation of members of different clans, which otherwise use distinct signals. We further suggest that vocal learning Text Orca Orcinus orca Unknown |
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ftciteseerx |
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English |
description |
Resident killer whales off British Columbia form four acoustically distinct clans, each with a unique dialect of discrete pulsed calls. Three clans belong to the northern and one to the southern community. Resident killer whales also produce tonal whistles, which play an important role in close-range communication within the northern community. However, there has been no comparative analysis of repertoires of whis-tles across clans. We investigated the structural characteristics, stability and group specificity of whistles in resident killer whales off British Columbia. Acoustic recordings and behavioural observations were made between 1978 and 2003. Whistles were classified spectrographically and additional observers were used to confirm our classification. Whistles were compared across clans using discriminant function analysis. We found 11 types of stereotyped whistles in the northern and four in the southern community with some of the whistle types being stable over at least 13 years. In northern residents, 10 of the 11 whistle types were structurally identical in two of the three acoustic clans, whereas the whistle types of southern residents differed clearly from those of the northern residents. Our study shows that killer whales that have no overlap in their call repertoire use essentially the same set of stereotyped whistles. Shared stereotyped whistles might provide a community-level means of recognition that facilitates association and affiliation of members of different clans, which otherwise use distinct signals. We further suggest that vocal learning |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
John K. B. Ford Frank Thomsen |
spellingShingle |
John K. B. Ford Frank Thomsen Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
author_facet |
John K. B. Ford Frank Thomsen |
author_sort |
John K. B. Ford |
title |
Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
title_short |
Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
title_full |
Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
title_fullStr |
Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
title_full_unstemmed |
Stability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia |
title_sort |
stability and group specificity of stereotyped whistles in resident killer whales, orcinus orca, off british columbia |
publishDate |
2004 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.456.5909 http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf |
genre |
Orca Orcinus orca |
genre_facet |
Orca Orcinus orca |
op_source |
http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.456.5909 http://www.econscience.org/val/pubs/orca_refs/riesch+2005.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766161612100599808 |