Variation of in-air female Weddell seal contact calls
From the abstract of the attached paper: Vocal recognition may function as a critical factor in maintaining the phocid mother-pup bond during lactation. For vocal recognition to function, the caller must produce individually distinct calls that are recognised by their intended recipient. Mother-pup...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/variation-in-air-contact-calls/699738 https://doi.org/10.4225/15/55EFB82D6CCB5 https://data.aad.gov.au/metadata/records/ASAC_2122-4 http://nla.gov.au/nla.party-617536 |
id |
ftands:oai:ands.org.au::699738 |
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record_format |
openpolar |
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 CALL TYPE CALLS CONTACT CALLS FREQUENCY INDIVIDUAL VARIATION LEPTONYCHOTES WEDDELLII VOCALISATIONS WEDDELL SEALS FIELD SURVEYS CONTINENT > ANTARCTICA > Davis McMurdo Station GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL TYPE CALLS CONTACT CALLS FREQUENCY INDIVIDUAL VARIATION LEPTONYCHOTES WEDDELLII VOCALISATIONS WEDDELL SEALS FIELD SURVEYS CONTINENT > ANTARCTICA > Davis McMurdo Station GEOGRAPHIC REGION > POLAR Variation of in-air female Weddell seal contact calls |
topic_facet |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL TYPE CALLS CONTACT CALLS FREQUENCY INDIVIDUAL VARIATION LEPTONYCHOTES WEDDELLII VOCALISATIONS WEDDELL SEALS FIELD SURVEYS CONTINENT > ANTARCTICA > Davis McMurdo Station GEOGRAPHIC REGION > POLAR |
description |
From the abstract of the attached paper: Vocal recognition may function as a critical factor in maintaining the phocid mother-pup bond during lactation. For vocal recognition to function, the caller must produce individually distinct calls that are recognised by their intended recipient. Mother-pup vocal recognition has been studied extensively in colonial otariids and appears to be characteristic of this family. Although less numerous, empirical studies of phocid species have revealed a range of recognition abilities. This study investigated whether Weddell seal (Leptonychotes weddellii) females produce individually distinct 'pup contact' calls that function during natural pair reunions. Fifteen calls from each of nine females recorded in the Vestfold Hills, Antarctica were analysed. One temporal, nine fundamental frequency and five spectral characteristics were measured. Results of the cross-validated Discriminant Function Analysis revealed that mothers produce individually distinct calls with 56% of calls assigned to the correct individual. The probability of achieving this level of discrimination on novel data by chance alone is highly improbable. Analysis of eight mother-pup reunions recorded near McMurdo Sound, Antarctica further demonstrated that these 'pup contact' calls function during natural pair reunions. Behavioural analysis also revealed that pups were chiefly responsible for establishing and maintaining close contact throughout the reunion process. Our study therefore demonstrates that Weddell seal females produce calls with sufficient stereotypy to allow pups to identify them during pair reunions, providing evidence of a functioning mother-pup vocal recognition system. Column A - Row 1: Gives the tag number of the female. - Rows 3-33: The list of acoustic measurements recorded from the spectrograms. - Rows 3-5: Temporal measurements recorded in milliseconds. - Rows 7-12: Frequency measurements recorded from the fundamental frequency. Rows 9-11 were measured at the 1/4, 2/4 and 3/4 temporal positions along the fundamental frequency respectively. - Rows 13-17: Give the number of the frequency band with the most energy at the temporal positions stated (i.e. fundamental frequency band=1, first harmonic=2 etc). - Rows 19-29: List the fundamental frequency measurements, taken at the temporal positions stated, used to calculate Mean frequency (Row 31) and the Coefficient of Frequency Modulation (Row 33) using the formula listed in the publication. - Rows 35 and 36: List the cursor error margins of the acoustic analysis program I used. Columns B-P - Give details of the above mentioned acoustic characteristics for 15 replicate calls from each of the 9 females sampled. |
author2 |
TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Variation of in-air female Weddell seal contact calls |
title_short |
Variation of in-air female Weddell seal contact calls |
title_full |
Variation of in-air female Weddell seal contact calls |
title_fullStr |
Variation of in-air female Weddell seal contact calls |
title_full_unstemmed |
Variation of in-air female Weddell seal contact calls |
title_sort |
variation of in-air female weddell seal contact calls |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/variation-in-air-contact-calls/699738 https://doi.org/10.4225/15/55EFB82D6CCB5 https://data.aad.gov.au/metadata/records/ASAC_2122-4 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-68.5698; southlimit=-68.57; westlimit=77.9265; eastLimit=77.9267; projection=WGS84 Spatial: northlimit=-77.8; southlimit=-77.9; westlimit=166.6; eastLimit=166.7; projection=WGS84 Temporal: From 1997-12-01 to 1997-12-08 |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(77.9265,77.9267,-68.5698,-68.57) ENVELOPE(166.6,166.7,-77.8,-77.9) |
geographic |
Vestfold Hills McMurdo Sound Weddell Vestfold McMurdo Station |
geographic_facet |
Vestfold Hills McMurdo Sound Weddell Vestfold McMurdo Station |
genre |
Antarc* Antarctica McMurdo Sound Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctica McMurdo Sound Weddell Seal Weddell Seals |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/variation-in-air-contact-calls/699738 a8516b2c-5a7c-4153-a7c0-3d184483faf5 doi:10.4225/15/55EFB82D6CCB5 ASAC_2122-4 https://data.aad.gov.au/metadata/records/ASAC_2122-4 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/55EFB82D6CCB5 |
_version_ |
1766245846043590656 |
spelling |
ftands:oai:ands.org.au::699738 2023-05-15T13:46:57+02:00 Variation of in-air female Weddell seal contact calls TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-68.5698; southlimit=-68.57; westlimit=77.9265; eastLimit=77.9267; projection=WGS84 Spatial: northlimit=-77.8; southlimit=-77.9; westlimit=166.6; eastLimit=166.7; projection=WGS84 Temporal: From 1997-12-01 to 1997-12-08 https://researchdata.ands.org.au/variation-in-air-contact-calls/699738 https://doi.org/10.4225/15/55EFB82D6CCB5 https://data.aad.gov.au/metadata/records/ASAC_2122-4 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/variation-in-air-contact-calls/699738 a8516b2c-5a7c-4153-a7c0-3d184483faf5 doi:10.4225/15/55EFB82D6CCB5 ASAC_2122-4 https://data.aad.gov.au/metadata/records/ASAC_2122-4 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL TYPE CALLS CONTACT CALLS FREQUENCY INDIVIDUAL VARIATION LEPTONYCHOTES WEDDELLII VOCALISATIONS WEDDELL SEALS FIELD SURVEYS CONTINENT > ANTARCTICA > Davis McMurdo Station GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/55EFB82D6CCB5 2020-01-05T21:16:37Z From the abstract of the attached paper: Vocal recognition may function as a critical factor in maintaining the phocid mother-pup bond during lactation. For vocal recognition to function, the caller must produce individually distinct calls that are recognised by their intended recipient. Mother-pup vocal recognition has been studied extensively in colonial otariids and appears to be characteristic of this family. Although less numerous, empirical studies of phocid species have revealed a range of recognition abilities. This study investigated whether Weddell seal (Leptonychotes weddellii) females produce individually distinct 'pup contact' calls that function during natural pair reunions. Fifteen calls from each of nine females recorded in the Vestfold Hills, Antarctica were analysed. One temporal, nine fundamental frequency and five spectral characteristics were measured. Results of the cross-validated Discriminant Function Analysis revealed that mothers produce individually distinct calls with 56% of calls assigned to the correct individual. The probability of achieving this level of discrimination on novel data by chance alone is highly improbable. Analysis of eight mother-pup reunions recorded near McMurdo Sound, Antarctica further demonstrated that these 'pup contact' calls function during natural pair reunions. Behavioural analysis also revealed that pups were chiefly responsible for establishing and maintaining close contact throughout the reunion process. Our study therefore demonstrates that Weddell seal females produce calls with sufficient stereotypy to allow pups to identify them during pair reunions, providing evidence of a functioning mother-pup vocal recognition system. Column A - Row 1: Gives the tag number of the female. - Rows 3-33: The list of acoustic measurements recorded from the spectrograms. - Rows 3-5: Temporal measurements recorded in milliseconds. - Rows 7-12: Frequency measurements recorded from the fundamental frequency. Rows 9-11 were measured at the 1/4, 2/4 and 3/4 temporal positions along the fundamental frequency respectively. - Rows 13-17: Give the number of the frequency band with the most energy at the temporal positions stated (i.e. fundamental frequency band=1, first harmonic=2 etc). - Rows 19-29: List the fundamental frequency measurements, taken at the temporal positions stated, used to calculate Mean frequency (Row 31) and the Coefficient of Frequency Modulation (Row 33) using the formula listed in the publication. - Rows 35 and 36: List the cursor error margins of the acoustic analysis program I used. Columns B-P - Give details of the above mentioned acoustic characteristics for 15 replicate calls from each of the 9 females sampled. Dataset Antarc* Antarctica McMurdo Sound Weddell Seal Weddell Seals Research Data Australia (Australian National Data Service - ANDS) Vestfold Hills McMurdo Sound Weddell Vestfold McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(77.9265,77.9267,-68.5698,-68.57) ENVELOPE(166.6,166.7,-77.8,-77.9) |