Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/17591
Title: Vocal repertoire of the social giant otter
Authors: Leuchtenberger, Caroline
Sousa-Lima, Renata S.
Duplaix, Nicole
Magnusson, William Ernest
Mourão, Guilherme
Keywords: Vocal Repertoire
Acoustics
Age
Aggression
Animals
Emotional Intelligence
Feeding Behavior
Female
Grooming
Male
Otter
Physiology
Psychological Model
Psychology
Social Behavior
Sound Detection
Territoriality
Vocalization
Acoustics
Age Factors
Agonistic Behavior
Animal
Emotional Intelligence
Feeding Behavior
Female
Grooming
Male
Models, Psychological
Otters
Social Behavior
Sound Spectrography
Territoriality
Vocalization, Animals
Issue Date: 2014
metadata.dc.publisher.journal: Journal of the Acoustical Society of America
metadata.dc.relation.ispartof: Volume 136, Número 5, Pags. 2861-2875
Abstract: According to the social intelligence hypothesis, species with complex social interactions have more sophisticated communication systems. Giant otters (Pteronura brasiliensis) live in groups with complex social interactions. It is likely that the vocal communication of giant otters is more sophisticated than previous studies suggest. The objectives of the current study were to describe the airborne vocal repertoire of giant otters in the Pantanal area of Brazil, to analyze call types within different behavioral contexts, and to correlate vocal complexity with level of sociability of mustelids to verify whether or not the result supports the social intelligence hypothesis. The behavior of nine giant otters groups was observed. Vocalizations recorded were acoustically and statistically analyzed to describe the species' repertoire. The repertoire was comprised by 15 sound types emitted in different behavioral contexts. The main behavioral contexts of each sound type were significantly associated with the acoustic variable ordination of different sound types. A strong correlation between vocal complexity and sociability was found for different species, suggesting that the communication systems observed in the family mustelidae support the social intelligence hypothesis. © 2014 Acoustical Society of America.
metadata.dc.identifier.doi: 10.1121/1.4896518
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