Weddell seal call types made by males and females.
Recordings were made of adult male and female Weddell seals on the ice during the breeding seasons of 1990 and 1997. The recordings were made near Davis, Antarctica in the Vestfold Hills. The vocalisations made with both the mouth and nostrils closed were classified into call types. These call types...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/weddell-seal-types-males-females/699735 https://doi.org/10.4225/15/55D3E89147AA3 https://data.aad.gov.au/metadata/records/ASAC_2122-1 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::699735 2023-05-15T13:46:57+02:00 Weddell seal call types made by males and females. TERHUNE, JOHN MOORE (hasPrincipalInvestigator) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-68.0; southlimit=-68.0; westlimit=72.0; eastLimit=72.0; projection=WGS84 Temporal: From 1990-11-10 to 1997-12-08 https://researchdata.ands.org.au/weddell-seal-types-males-females/699735 https://doi.org/10.4225/15/55D3E89147AA3 https://data.aad.gov.au/metadata/records/ASAC_2122-1 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/weddell-seal-types-males-females/699735 8bb624ce-4863-4039-94df-34c57885cd5e doi:10.4225/15/55D3E89147AA3 ASAC_2122-1 https://data.aad.gov.au/metadata/records/ASAC_2122-1 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS LEPTONYCHOTES WEDDELLII SEX-SPECIFIC TRILLS VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > Davis GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/55D3E89147AA3 2020-01-05T21:16:37Z Recordings were made of adult male and female Weddell seals on the ice during the breeding seasons of 1990 and 1997. The recordings were made near Davis, Antarctica in the Vestfold Hills. The vocalisations made with both the mouth and nostrils closed were classified into call types. These call types are also produced by the seals when underwater. The call classifications were based on those described by Thomas, J.A. and Kuechle,, V.B. (1982, J. Acoust. Soc. Amer. 72: 1730-1738) and Pahl, B.C., Terhune, J.M. and Burton, H.R. (1997, Aus. J. Zool. 45: 171-187). Nineteen call types were identified. Of these, males made 18 and females made 15. Trills are only made by males and it is likely that a stepped ascending whistle is only made by females. A roar and mew are also potential male-only call types. The data suggest that the Trill vocalisations can be used to indicate the presence of males. This will be useful when recording underwater where the calling seals cannot be observed directly. A description of the types of calls made by Weddell Seals is listed below. SymbolNameDescription OToneConstant-frequency, predominantly sinusoidal call. LGrowlConstant-frequency, broad bandwidth, long call. QWhoopConstant-frequency call with a terminal upsweep. SSqueakBrief call with constant frequency or rising frequency and an irregular waveform. WAWhistle AscendingAscending frequency, sinusoidal waveform. TCTrill Constant-FrequencyNarrow bandwidth trill with a constant-frequency beginning, sinusoidal or frequency-modulated waveform. TTrillNarrow to broad bandwidth, containing a frequency downsweep, greater than 2 seconds. WDWhistle DescendingDescending frequency, sinusoidal waveform (less than 2 seconds). MMewAbruptly descending frequency followed by a long constant-frequency ending. CChugAbruptly descending frequency followed by a brief constant-frequency ending. GGuttural Glug (Grunt)Descending-frequency call that was lower than a Chug and had a brief duration. WAGWhistle Ascending - GruntBrief Ascending Whistle followed by a Guttural Glug (Grunt), the two types alternate in a regular pattern. KKnockAbrupt, brief-duration broadband sound Dataset Antarc* Antarctica Weddell Seal Weddell Seals Research Data Australia (Australian National Data Service - ANDS) Vestfold Hills Weddell Vestfold Burton ENVELOPE(166.733,166.733,-72.550,-72.550) ENVELOPE(72.0,72.0,-68.0,-68.0) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS LEPTONYCHOTES WEDDELLII SEX-SPECIFIC TRILLS VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > Davis GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS LEPTONYCHOTES WEDDELLII SEX-SPECIFIC TRILLS VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > Davis GEOGRAPHIC REGION > POLAR Weddell seal call types made by males and females. |
topic_facet |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS LEPTONYCHOTES WEDDELLII SEX-SPECIFIC TRILLS VOCALISATIONS WEDDELL SEALS HYDROPHONES FIELD SURVEYS CONTINENT > ANTARCTICA > Davis GEOGRAPHIC REGION > POLAR |
description |
Recordings were made of adult male and female Weddell seals on the ice during the breeding seasons of 1990 and 1997. The recordings were made near Davis, Antarctica in the Vestfold Hills. The vocalisations made with both the mouth and nostrils closed were classified into call types. These call types are also produced by the seals when underwater. The call classifications were based on those described by Thomas, J.A. and Kuechle,, V.B. (1982, J. Acoust. Soc. Amer. 72: 1730-1738) and Pahl, B.C., Terhune, J.M. and Burton, H.R. (1997, Aus. J. Zool. 45: 171-187). Nineteen call types were identified. Of these, males made 18 and females made 15. Trills are only made by males and it is likely that a stepped ascending whistle is only made by females. A roar and mew are also potential male-only call types. The data suggest that the Trill vocalisations can be used to indicate the presence of males. This will be useful when recording underwater where the calling seals cannot be observed directly. A description of the types of calls made by Weddell Seals is listed below. SymbolNameDescription OToneConstant-frequency, predominantly sinusoidal call. LGrowlConstant-frequency, broad bandwidth, long call. QWhoopConstant-frequency call with a terminal upsweep. SSqueakBrief call with constant frequency or rising frequency and an irregular waveform. WAWhistle AscendingAscending frequency, sinusoidal waveform. TCTrill Constant-FrequencyNarrow bandwidth trill with a constant-frequency beginning, sinusoidal or frequency-modulated waveform. TTrillNarrow to broad bandwidth, containing a frequency downsweep, greater than 2 seconds. WDWhistle DescendingDescending frequency, sinusoidal waveform (less than 2 seconds). MMewAbruptly descending frequency followed by a long constant-frequency ending. CChugAbruptly descending frequency followed by a brief constant-frequency ending. GGuttural Glug (Grunt)Descending-frequency call that was lower than a Chug and had a brief duration. WAGWhistle Ascending - GruntBrief Ascending Whistle followed by a Guttural Glug (Grunt), the two types alternate in a regular pattern. KKnockAbrupt, brief-duration broadband sound |
author2 |
TERHUNE, JOHN MOORE (hasPrincipalInvestigator) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Weddell seal call types made by males and females. |
title_short |
Weddell seal call types made by males and females. |
title_full |
Weddell seal call types made by males and females. |
title_fullStr |
Weddell seal call types made by males and females. |
title_full_unstemmed |
Weddell seal call types made by males and females. |
title_sort |
weddell seal call types made by males and females. |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/weddell-seal-types-males-females/699735 https://doi.org/10.4225/15/55D3E89147AA3 https://data.aad.gov.au/metadata/records/ASAC_2122-1 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-68.0; southlimit=-68.0; westlimit=72.0; eastLimit=72.0; projection=WGS84 Temporal: From 1990-11-10 to 1997-12-08 |
long_lat |
ENVELOPE(166.733,166.733,-72.550,-72.550) ENVELOPE(72.0,72.0,-68.0,-68.0) |
geographic |
Vestfold Hills Weddell Vestfold Burton |
geographic_facet |
Vestfold Hills Weddell Vestfold Burton |
genre |
Antarc* Antarctica Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctica Weddell Seal Weddell Seals |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/weddell-seal-types-males-females/699735 8bb624ce-4863-4039-94df-34c57885cd5e doi:10.4225/15/55D3E89147AA3 ASAC_2122-1 https://data.aad.gov.au/metadata/records/ASAC_2122-1 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/55D3E89147AA3 |
_version_ |
1766245845259255808 |