Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations
During the winter and spring of 2000 and 2002, underwater calls of Weddell seals were recorded near Mawson. The goal was to determine if some call types were only given during the spring breeding season. The calls were classified into 10 broad types and the proportional usage of each was determined...
id |
ftands:oai:ands.org.au::686092 |
---|---|
record_format |
openpolar |
spelling |
ftands:oai:ands.org.au::686092 2023-05-15T13:46:55+02:00 Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-67.4; southlimit=-67.65; westlimit=62.2; eastLimit=63.7 Temporal: From 2000-06-06 to 2002-12-11 https://researchdata.ands.org.au/proportional-underwater-type-nonbreeding-situations/686092 https://data.aad.gov.au/metadata/records/ASAC_1132-3 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3423 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1132 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3425 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1132-3 unknown Australian Ocean Data Network https://researchdata.ands.org.au/proportional-underwater-type-nonbreeding-situations/686092 e0271417-9426-4b7a-9fc1-72d40bb0a28b https://data.aad.gov.au/metadata/records/ASAC_1132-3 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3423 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1132 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3425 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1132-3 https://data.aad.gov.au biota oceans SEALS/SEA LIONS/WALRUSES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES Weddel seal Breeding Non-breeding underwater calls Leptonychotes weddellii vocal behaviour seasonal variation HYDROPHONES FIELD SURVEYS FIELD INVESTIGATION AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:07:03Z During the winter and spring of 2000 and 2002, underwater calls of Weddell seals were recorded near Mawson. The goal was to determine if some call types were only given during the spring breeding season. The calls were classified into 10 broad types and the proportional usage of each was determined from May to December. All call types were present throughout the study period and during periods of darkness and light and at high, medium or low calling rates. Taken from the abstract of the referenced paper: Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii (Lesson, 1826)) near Mawson, Antarctica, investigated the hypothesis that certain call types function specifically in breeding behaviour. Recordings were collected at various sites in 2000 and 2002 from June to December. Twenty-four hour recordings were collected in 2002 at two sites. One hundred consecutive calls from each of 248 recordings were classified into one of ten common call types. Time to 100 calls provided the calling rate. The study period was divided into four periods representing initial sea-ice formation, pre-pupping, pupping, and mating. Calling rate and light-dark differences were also examined. No presence-absence differences were observed for any of the call types with season. The largest difference between nonbreeding and breeding situations was an increase from 32.2% to 38.1% for descending whistles (F[3,244] = 4.483, p = 0.004). Trills gradually increased from 1.8% to 7.3% toward the mating period (F[3,244] = 30.932, p less than 0.001). The proportion of trills, chugs, descending whistles, and other call types also varied with calling rate and light-dark conditions. Some pre-reproductive behaviours may occur in winter, but no call types of Weddell seals function solely in the breeding season. Dataset Antarc* Antarctica Sea ice Southern Ocean Weddell Seals walrus* Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Weddell ENVELOPE(62.2,63.7,-67.4,-67.65) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans SEALS/SEA LIONS/WALRUSES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES Weddel seal Breeding Non-breeding underwater calls Leptonychotes weddellii vocal behaviour seasonal variation HYDROPHONES FIELD SURVEYS FIELD INVESTIGATION AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans SEALS/SEA LIONS/WALRUSES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES Weddel seal Breeding Non-breeding underwater calls Leptonychotes weddellii vocal behaviour seasonal variation HYDROPHONES FIELD SURVEYS FIELD INVESTIGATION AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
topic_facet |
biota oceans SEALS/SEA LIONS/WALRUSES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES Weddel seal Breeding Non-breeding underwater calls Leptonychotes weddellii vocal behaviour seasonal variation HYDROPHONES FIELD SURVEYS FIELD INVESTIGATION AMD/AU CEOS AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
During the winter and spring of 2000 and 2002, underwater calls of Weddell seals were recorded near Mawson. The goal was to determine if some call types were only given during the spring breeding season. The calls were classified into 10 broad types and the proportional usage of each was determined from May to December. All call types were present throughout the study period and during periods of darkness and light and at high, medium or low calling rates. Taken from the abstract of the referenced paper: Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii (Lesson, 1826)) near Mawson, Antarctica, investigated the hypothesis that certain call types function specifically in breeding behaviour. Recordings were collected at various sites in 2000 and 2002 from June to December. Twenty-four hour recordings were collected in 2002 at two sites. One hundred consecutive calls from each of 248 recordings were classified into one of ten common call types. Time to 100 calls provided the calling rate. The study period was divided into four periods representing initial sea-ice formation, pre-pupping, pupping, and mating. Calling rate and light-dark differences were also examined. No presence-absence differences were observed for any of the call types with season. The largest difference between nonbreeding and breeding situations was an increase from 32.2% to 38.1% for descending whistles (F[3,244] = 4.483, p = 0.004). Trills gradually increased from 1.8% to 7.3% toward the mating period (F[3,244] = 30.932, p less than 0.001). The proportion of trills, chugs, descending whistles, and other call types also varied with calling rate and light-dark conditions. Some pre-reproductive behaviours may occur in winter, but no call types of Weddell seals function solely in the breeding season. |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
title_short |
Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
title_full |
Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
title_fullStr |
Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
title_full_unstemmed |
Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations |
title_sort |
proportional underwater call type usage by weddell seals (leptonychotes weddellii) in breeding and nonbreeding situations |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/proportional-underwater-type-nonbreeding-situations/686092 https://data.aad.gov.au/metadata/records/ASAC_1132-3 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3423 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1132 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3425 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1132-3 |
op_coverage |
Spatial: northlimit=-67.4; southlimit=-67.65; westlimit=62.2; eastLimit=63.7 Temporal: From 2000-06-06 to 2002-12-11 |
long_lat |
ENVELOPE(62.2,63.7,-67.4,-67.65) |
geographic |
Southern Ocean Weddell |
geographic_facet |
Southern Ocean Weddell |
genre |
Antarc* Antarctica Sea ice Southern Ocean Weddell Seals walrus* |
genre_facet |
Antarc* Antarctica Sea ice Southern Ocean Weddell Seals walrus* |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/proportional-underwater-type-nonbreeding-situations/686092 e0271417-9426-4b7a-9fc1-72d40bb0a28b https://data.aad.gov.au/metadata/records/ASAC_1132-3 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3423 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1132 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=3425 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1132-3 |
_version_ |
1766245656788205568 |