Contexts of emission of non-signature whistles in bottlenose dolphins (Tursiops truncatus) under human care

Autor: Juliana Lopez-Marulanda, Heiko G. Rödel, Sander Vanderheul, Fabienne Delfour, Olivier Adam, Nikolaas Colpaert
Přispěvatelé: Institut des Neurosciences Paris-Saclay (NeuroPSI), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ethologie Expérimentale et Comparée (LEEC), Université Sorbonne Paris Nord, HOGENT University of Applied Sciences and Arts, Boudewijn Seapark
Jazyk: angličtina
Rok vydání: 2020
Předmět:
0106 biological sciences
medicine.medical_specialty
Sound Spectrography
[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology
MESH: Vocalization
Animal
Captivity
MESH: Sound
Audiology
010603 evolutionary biology
01 natural sciences
Vocalization
Behavioral Neuroscience
Individual based
medicine
Animals
Humans
0501 psychology and cognitive sciences
MESH: Animals
14. Life underwater
050102 behavioral science & comparative psychology
Group level
Behavior
MESH: Humans
[SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior
05 social sciences
Underwater observations
[SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences
Acoustics
General Medicine
MESH: Bottle-Nosed Dolphin
Bottle-Nosed Dolphin
Behavioral analysis
Sound
Body contact
MESH: Acoustics
Animal Science and Zoology
MESH: Sound Spectrography
Vocalization
Animal
Psychology
Zdroj: Behavioural Processes
Behavioural Processes, Elsevier, 2020, 181, pp.104255. ⟨10.1016/j.beproc.2020.104255⟩
ISSN: 0376-6357
1872-8308
DOI: 10.1016/j.beproc.2020.104255⟩
Popis: International audience; Bottlenose dolphins are social cetaceans that strongly rely on acoustic communication and signaling. The diversity of sounds emitted by the species has been structurally classified into whistles, clicks and burst-pulsed sounds. Although click sounds and individually-specific signature whistles have been largely studied, not much is known about non-signature whistles. Most studies that link behavior and whistle production conduct aerial behavioral observations and link the production of whistles to the general category of social interactions. The aim of this study was to determine if there was a correlation between the non-signature whistle production and the underwater behaviors of a group of bottlenose dolphins (Tursiops truncatus) under human care, during their free time in the absence of trainers. To do this we made audio-video recordings 15 min before and after 10 training sessions of eight dolphins in Boudewijn Seapark (Belgium). For the behavioral analysis we conducted focal follows on each individual based on six behavioral categories. For the acoustical analysis, carried out at the group level, we used the SIGID method to identify non-signature whistles (N = 661) and we classified them in six categories according to their frequency modulation. The occurrences of the six categories of whistles were highly collinear. Most importantly, non-signature whistle production was positively correlated with the time individuals spent slow swimming alone, and was negatively correlated with the time spent in affiliative body contact. This is the first analysis that links the production of non-signature whistles with particular underwater behaviors in this species.
Databáze: OpenAIRE
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