Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity
Adult Weddell seals (Leptonychotes weddellii) exhibit site fidelity to where they first breed but juveniles, and perhaps transient adult males, may disperse from their natal location. If there is mixing between adjacent breeding groups, we would expect that common vocalisations would exhibit clinal...
Other Authors: | , , , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Australian Antarctic Data Centre
|
Subjects: | |
Online Access: | https://researchdata.ands.org.au/geographic-variations-underwater-area-fidelity/699448 https://doi.org/10.4225/15/54D05243F0EFF https://data.aad.gov.au/metadata/records/ASAC_1132-2 |
id |
ftands:oai:ands.org.au::699448 |
---|---|
record_format |
openpolar |
spelling |
ftands:oai:ands.org.au::699448 2023-05-15T13:46:57+02:00 Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) University of New Brunswick, Canada (originator) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-66.0; southlimit=-78.0; westlimit=-19.0; eastLimit=166.0; projection=WGS84 Temporal: From 1991-10-01 to 2006-12-31 https://researchdata.ands.org.au/geographic-variations-underwater-area-fidelity/699448 https://doi.org/10.4225/15/54D05243F0EFF https://data.aad.gov.au/metadata/records/ASAC_1132-2 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/geographic-variations-underwater-area-fidelity/699448 2538ef70-76ff-4872-a22d-c09b40a4d83b doi:10.4225/15/54D05243F0EFF ASAC_1132-2 https://data.aad.gov.au/metadata/records/ASAC_1132-2 Australian Antarctic Data Centre biota location oceans SEA ICE EARTH SCIENCE CRYOSPHERE SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL POPULATION DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS Weddell seal vocalisation geographic variation Leptonychotes weddellii HYDROPHONES ACOUSTIC RECEIVERS FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/54D05243F0EFF 2020-01-05T21:16:10Z Adult Weddell seals (Leptonychotes weddellii) exhibit site fidelity to where they first breed but juveniles, and perhaps transient adult males, may disperse from their natal location. If there is mixing between adjacent breeding groups, we would expect that common vocalisations would exhibit clinal patterns. Underwater Trill vocalisations of male Weddell seals at Mawson, Davis, Casey, McMurdo Sound, Neumayer and Drescher Inlet separated by ca. 500 to greater than 9,000 km, were examined for evidence of clinal variation. Trills are only emitted by males and have a known territorial defence function. Trills from Davis and Mawson, ca. 630 km apart, were distinct from each other and exhibited the greatest number of unique frequency contour patterns. The acoustic features (duration, waveform, frequency contour) of Trills from Neumayer and Drescher Inlet, ca. 500 km apart, were more distinct from each other than they were from the other four locations. General Discriminant Analysis and Classification Tree Analysis correctly classified 65.8 and 76.9% of the Trills to the correct location. The classification errors assigned more locations to sites greater than 630 km away than to nearest neighbours. Weddell seal Trills exhibit geographic variation but there is no evidence of a clinal pattern. This suggests that males remain close to single breeding areas throughout their lifetime. This work was completed as part of ASAC project 1132 and 2122 (ASAC_1132, ASAC_2122). Dataset Antarc* Antarctica McMurdo Sound Sea ice Southern Ocean Weddell Seal Weddell Seals walrus* Research Data Australia (Australian National Data Service - ANDS) McMurdo Sound Neumayer Southern Ocean Weddell ENVELOPE(-19.0,166.0,-66.0,-78.0) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota location oceans SEA ICE EARTH SCIENCE CRYOSPHERE SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL POPULATION DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS Weddell seal vocalisation geographic variation Leptonychotes weddellii HYDROPHONES ACOUSTIC RECEIVERS FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota location oceans SEA ICE EARTH SCIENCE CRYOSPHERE SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL POPULATION DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS Weddell seal vocalisation geographic variation Leptonychotes weddellii HYDROPHONES ACOUSTIC RECEIVERS FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
topic_facet |
biota location oceans SEA ICE EARTH SCIENCE CRYOSPHERE SEALS/SEA LIONS/WALRUSES BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL POPULATION DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS Weddell seal vocalisation geographic variation Leptonychotes weddellii HYDROPHONES ACOUSTIC RECEIVERS FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
Adult Weddell seals (Leptonychotes weddellii) exhibit site fidelity to where they first breed but juveniles, and perhaps transient adult males, may disperse from their natal location. If there is mixing between adjacent breeding groups, we would expect that common vocalisations would exhibit clinal patterns. Underwater Trill vocalisations of male Weddell seals at Mawson, Davis, Casey, McMurdo Sound, Neumayer and Drescher Inlet separated by ca. 500 to greater than 9,000 km, were examined for evidence of clinal variation. Trills are only emitted by males and have a known territorial defence function. Trills from Davis and Mawson, ca. 630 km apart, were distinct from each other and exhibited the greatest number of unique frequency contour patterns. The acoustic features (duration, waveform, frequency contour) of Trills from Neumayer and Drescher Inlet, ca. 500 km apart, were more distinct from each other than they were from the other four locations. General Discriminant Analysis and Classification Tree Analysis correctly classified 65.8 and 76.9% of the Trills to the correct location. The classification errors assigned more locations to sites greater than 630 km away than to nearest neighbours. Weddell seal Trills exhibit geographic variation but there is no evidence of a clinal pattern. This suggests that males remain close to single breeding areas throughout their lifetime. This work was completed as part of ASAC project 1132 and 2122 (ASAC_1132, ASAC_2122). |
author2 |
TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) University of New Brunswick, Canada (originator) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
title_short |
Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
title_full |
Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
title_fullStr |
Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
title_full_unstemmed |
Geographic variations in underwater male Weddell seal Trills suggest breeding area fidelity |
title_sort |
geographic variations in underwater male weddell seal trills suggest breeding area fidelity |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/geographic-variations-underwater-area-fidelity/699448 https://doi.org/10.4225/15/54D05243F0EFF https://data.aad.gov.au/metadata/records/ASAC_1132-2 |
op_coverage |
Spatial: northlimit=-66.0; southlimit=-78.0; westlimit=-19.0; eastLimit=166.0; projection=WGS84 Temporal: From 1991-10-01 to 2006-12-31 |
long_lat |
ENVELOPE(-19.0,166.0,-66.0,-78.0) |
geographic |
McMurdo Sound Neumayer Southern Ocean Weddell |
geographic_facet |
McMurdo Sound Neumayer Southern Ocean Weddell |
genre |
Antarc* Antarctica McMurdo Sound Sea ice Southern Ocean Weddell Seal Weddell Seals walrus* |
genre_facet |
Antarc* Antarctica McMurdo Sound Sea ice Southern Ocean Weddell Seal Weddell Seals walrus* |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/geographic-variations-underwater-area-fidelity/699448 2538ef70-76ff-4872-a22d-c09b40a4d83b doi:10.4225/15/54D05243F0EFF ASAC_1132-2 https://data.aad.gov.au/metadata/records/ASAC_1132-2 |
op_doi |
https://doi.org/10.4225/15/54D05243F0EFF |
_version_ |
1766245825177976832 |