Social Behaviour of Captive Belugas, Delphinapterus Leucas.
Focal-animal sampling techniques developed for investigating social behaviour of terrestrial animals were adapted for studying captive belugas, providing quantitative descriptions of social relationships among individuals. Five groups of captive belugas were observed, allowing a cross-sectional view...
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ftdtic:ADA289549 2023-05-15T15:41:59+02:00 Social Behaviour of Captive Belugas, Delphinapterus Leucas. Recchia, Cheri A. WOODS HOLE OCEANOGRAPHIC INSTITUTION MA 1994-02 text/html http://www.dtic.mil/docs/citations/ADA289549 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289549 en eng http://www.dtic.mil/docs/citations/ADA289549 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Biology Psychology *SIZES(DIMENSIONS) *WHALES *BEHHAVIOR SPATIAL DISTRIBUTION HIGH RATE PATTERNS VISUAL INSPECTION ACOUSTICS ANIMALS STATISTICAL ANALYSIS EARTH(PLANET) ADULTS SPECTROGRAPHY OCEANOGRAPHY DELPHINAPTERUS LEUCAS CAPTIVE BELUGAS Text 1994 ftdtic 2016-02-19T11:54:27Z Focal-animal sampling techniques developed for investigating social behaviour of terrestrial animals were adapted for studying captive belugas, providing quantitative descriptions of social relationships among individuals. Five groups of captive belugas were observed, allowing a cross-sectional view of sociality in groups of diverse sizes and compositions. Inter-individual distances were used to quantify patterns of spatial association. A set of social behaviours for which actor and recipient could be identified was defined to characterize dyadic interactions. The mother-calf pair spent more time together, and interacted more often than adults. The calf maintained proximity with his mother; larger adults generally maintained proximity with smaller adults. Among adults, larger groups performed more kinds of behaviours and interacted at higher rates than smaller groups. Within dyads, the larger whale performed more aggressive behaviours and the smaller whale more submissive behaviours. Clear dominance relations existed in three groups with larger whales dominant to smaller whales. Vocalizations of three groups were classified subjectively, based on aural impressions and visual inspection of spectrograms but most signals appeared graded. Statistical analyses of measured acoustic features confirmed subjective impressions that vocalizations could not be classified into discrete and homogeneous categories. Text Beluga* Delphinapterus leucas Defense Technical Information Center: DTIC Technical Reports database |
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collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Biology Psychology *SIZES(DIMENSIONS) *WHALES *BEHHAVIOR SPATIAL DISTRIBUTION HIGH RATE PATTERNS VISUAL INSPECTION ACOUSTICS ANIMALS STATISTICAL ANALYSIS EARTH(PLANET) ADULTS SPECTROGRAPHY OCEANOGRAPHY DELPHINAPTERUS LEUCAS CAPTIVE BELUGAS |
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Biology Psychology *SIZES(DIMENSIONS) *WHALES *BEHHAVIOR SPATIAL DISTRIBUTION HIGH RATE PATTERNS VISUAL INSPECTION ACOUSTICS ANIMALS STATISTICAL ANALYSIS EARTH(PLANET) ADULTS SPECTROGRAPHY OCEANOGRAPHY DELPHINAPTERUS LEUCAS CAPTIVE BELUGAS Recchia, Cheri A. Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
topic_facet |
Biology Psychology *SIZES(DIMENSIONS) *WHALES *BEHHAVIOR SPATIAL DISTRIBUTION HIGH RATE PATTERNS VISUAL INSPECTION ACOUSTICS ANIMALS STATISTICAL ANALYSIS EARTH(PLANET) ADULTS SPECTROGRAPHY OCEANOGRAPHY DELPHINAPTERUS LEUCAS CAPTIVE BELUGAS |
description |
Focal-animal sampling techniques developed for investigating social behaviour of terrestrial animals were adapted for studying captive belugas, providing quantitative descriptions of social relationships among individuals. Five groups of captive belugas were observed, allowing a cross-sectional view of sociality in groups of diverse sizes and compositions. Inter-individual distances were used to quantify patterns of spatial association. A set of social behaviours for which actor and recipient could be identified was defined to characterize dyadic interactions. The mother-calf pair spent more time together, and interacted more often than adults. The calf maintained proximity with his mother; larger adults generally maintained proximity with smaller adults. Among adults, larger groups performed more kinds of behaviours and interacted at higher rates than smaller groups. Within dyads, the larger whale performed more aggressive behaviours and the smaller whale more submissive behaviours. Clear dominance relations existed in three groups with larger whales dominant to smaller whales. Vocalizations of three groups were classified subjectively, based on aural impressions and visual inspection of spectrograms but most signals appeared graded. Statistical analyses of measured acoustic features confirmed subjective impressions that vocalizations could not be classified into discrete and homogeneous categories. |
author2 |
WOODS HOLE OCEANOGRAPHIC INSTITUTION MA |
format |
Text |
author |
Recchia, Cheri A. |
author_facet |
Recchia, Cheri A. |
author_sort |
Recchia, Cheri A. |
title |
Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
title_short |
Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
title_full |
Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
title_fullStr |
Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
title_full_unstemmed |
Social Behaviour of Captive Belugas, Delphinapterus Leucas. |
title_sort |
social behaviour of captive belugas, delphinapterus leucas. |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA289549 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289549 |
genre |
Beluga* Delphinapterus leucas |
genre_facet |
Beluga* Delphinapterus leucas |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA289549 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766374861797588992 |