The acoustic repertoire of hooded seals ( Cystophora cristata )
Airborne and waterborne acoustic sounds of hooded seals (Cystophora cristata) were recorded during the breeding seasons of 1988 and 1989 in the Gulf of St. Lawrence, Canada. During 36 h of in-air focal-animal sampling and 9 h of ad libitum underwater sampling, 410 sounds, in total, were recorded and...
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Language: | English |
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Canadian Science Publishing
1995
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crcansciencepubl:10.1139/z95-159 2024-04-07T07:52:03+00:00 The acoustic repertoire of hooded seals ( Cystophora cristata ) Ballard, Karen Ann Kovacs, Kit M. 1995 http://dx.doi.org/10.1139/z95-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/z95-159 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 73, issue 7, page 1362-1374 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1995 crcansciencepubl https://doi.org/10.1139/z95-159 2024-03-08T00:37:51Z Airborne and waterborne acoustic sounds of hooded seals (Cystophora cristata) were recorded during the breeding seasons of 1988 and 1989 in the Gulf of St. Lawrence, Canada. During 36 h of in-air focal-animal sampling and 9 h of ad libitum underwater sampling, 410 sounds, in total, were recorded and analyzed. In the field, the context of signals was noted whenever possible. This included the behaviour of the signaller and that of its nearest neighbour. Frequency and temporal variables, measured directly from sonograms, were analyzed using a combination of principal components analysis and cluster analysis. Three major classes of sounds containing 5 call types were suggested by the cluster analysis. Variation occurs in the structure of calls both within and between call classes. Sounds that were created using the hood and septum both under water and in air, as well as a variety of underwater clicks and knocks, were distinct from voiced, airborne calls. Not surprisingly, most acoustic signals were used in agonistic (79%) or sexual (12%) situations during the reproductive period. Article in Journal/Newspaper Cystophora cristata Canadian Science Publishing Canada Canadian Journal of Zoology 73 7 1362 1374 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Ballard, Karen Ann Kovacs, Kit M. The acoustic repertoire of hooded seals ( Cystophora cristata ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Airborne and waterborne acoustic sounds of hooded seals (Cystophora cristata) were recorded during the breeding seasons of 1988 and 1989 in the Gulf of St. Lawrence, Canada. During 36 h of in-air focal-animal sampling and 9 h of ad libitum underwater sampling, 410 sounds, in total, were recorded and analyzed. In the field, the context of signals was noted whenever possible. This included the behaviour of the signaller and that of its nearest neighbour. Frequency and temporal variables, measured directly from sonograms, were analyzed using a combination of principal components analysis and cluster analysis. Three major classes of sounds containing 5 call types were suggested by the cluster analysis. Variation occurs in the structure of calls both within and between call classes. Sounds that were created using the hood and septum both under water and in air, as well as a variety of underwater clicks and knocks, were distinct from voiced, airborne calls. Not surprisingly, most acoustic signals were used in agonistic (79%) or sexual (12%) situations during the reproductive period. |
format |
Article in Journal/Newspaper |
author |
Ballard, Karen Ann Kovacs, Kit M. |
author_facet |
Ballard, Karen Ann Kovacs, Kit M. |
author_sort |
Ballard, Karen Ann |
title |
The acoustic repertoire of hooded seals ( Cystophora cristata ) |
title_short |
The acoustic repertoire of hooded seals ( Cystophora cristata ) |
title_full |
The acoustic repertoire of hooded seals ( Cystophora cristata ) |
title_fullStr |
The acoustic repertoire of hooded seals ( Cystophora cristata ) |
title_full_unstemmed |
The acoustic repertoire of hooded seals ( Cystophora cristata ) |
title_sort |
acoustic repertoire of hooded seals ( cystophora cristata ) |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/z95-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/z95-159 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Cystophora cristata |
genre_facet |
Cystophora cristata |
op_source |
Canadian Journal of Zoology volume 73, issue 7, page 1362-1374 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z95-159 |
container_title |
Canadian Journal of Zoology |
container_volume |
73 |
container_issue |
7 |
container_start_page |
1362 |
op_container_end_page |
1374 |
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1795667253246558208 |