Acoustic behaviour of bottlenose dolphins under human care while performing synchronous aerial jumps

Marulanda, Juliana López; Adam, Olivier; Huetz, Chloé; Delfour, Fabienne; Vanderheul, Sander; Blanchard, Torea; Célérier, Aurélie

doi:10.1016/j.beproc.2021.104357

Cited by 3 publications

(2 citation statements)

References 37 publications

(41 reference statements)

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“…This is a very interesting hypothesis that deserves to be explored in the future, not only in the linking between bubbling or other synchronous behaviors with functional vocalization types in the orcas but in other cetaceans as well (Bowles et al, 2016). Supporting these observations, recent experimental evidence suggests that during synchronous behaviors, dolphins use acoustic cues, and more particularly click trains, to coordinate their movements; possibly by eavesdropping on the clicks or echoes produced by one individual leading the navigation (Jaakkola et al, 2018;King et al, 2021;Marulanda et al, 2021).…”

Section: Multimodal and Synchronous Social Learning And Communicationmentioning

confidence: 84%

Multimodal imitative learning and synchrony in cetaceans: A model for speech and singing evolution

et al. 2023

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Multimodal imitation of actions, gestures and vocal production is a hallmark of the evolution of human communication, as both, vocal learning and visual-gestural imitation, were crucial factors that facilitated the evolution of speech and singing. Comparative evidence has revealed that humans are an odd case in this respect, as the case for multimodal imitation is barely documented in non-human animals. While there is evidence of vocal learning in birds and in mammals like bats, elephants and marine mammals, evidence in both domains, vocal and gestural, exists for two Psittacine birds (budgerigars and grey parrots) and cetaceans only. Moreover, it draws attention to the apparent absence of vocal imitation (with just a few cases reported for vocal fold control in an orangutan and a gorilla and a prolonged development of vocal plasticity in marmosets) and even for imitation of intransitive actions (not object related) in monkeys and apes in the wild. Even after training, the evidence for productive or “true imitation” (copy of a novel behavior, i.e., not pre-existent in the observer’s behavioral repertoire) in both domains is scarce. Here we review the evidence of multimodal imitation in cetaceans, one of the few living mammalian species that have been reported to display multimodal imitative learning besides humans, and their role in sociality, communication and group cultures. We propose that cetacean multimodal imitation was acquired in parallel with the evolution and development of behavioral synchrony and multimodal organization of sensorimotor information, supporting volitional motor control of their vocal system and audio-echoic-visual voices, body posture and movement integration.

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Section: Multimodal and Synchronous Social Learning And Communicationmentioning

confidence: 84%

Multimodal imitative learning and synchrony in cetaceans: A model for speech and singing evolution

et al. 2023

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“…We argue that the technology of echo suppression presented in this paper could lead to vast variations in experiments on the communication of dolphins. For instance, dolphins performing synchronous aerial jumps have been observed to coordinate their behavior with click trains [22]. Could they synchronize their jumps in separate tanks?…”

Section: Animal Telecommunication (Figure 2c)mentioning

confidence: 99%

Full-duplex acoustic interaction system for cognitive experiments with cetaceans

Rychen,

Semoroz,

Eckerle

et al. 2023

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Cetaceans show high cognitive abilities and strong social bonds. Their primary sensory modality to communicate and sense the environment is acoustics. Research on their echolocation and social vocalizations typically uses visual and tactile systems adapted from research on primates or birds. Such research would benefit from a purely acoustic communication system to better match their natural capabilities. We argue that a full duplex system, in which signals can flow in both directions simultaneously is essential for communication research. We designed and implemented a full duplex system to acoustically interact with cetaceans in the wild, featuring digital echo-suppression. We pilot tested the system in Arctic Norway and achieved an echo suppression of 18 dB. We discuss the limiting factors and how to improve the echo suppression further. The system enabled vocal interaction with the underwater acoustic scene by allowing experimenters to listen while producing sounds. We describe our motivations, then present our pilot deployment and give examples of initial explorative attempts to vocally interact with wild orcas and humpback whales.

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Full-duplex acoustic interaction system for cognitive experiments with cetaceans

Rychen

Semoroz²,

Eckerle

et al. 2022

Preprint

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Cetaceans show high cognitive abilities and strong social bonds. Acoustics is their primary modality to communicate and sense the environment. Research on their echolocation and vocalizations with conspecifics and with humans typically uses visual and tactile systems adapted from research on primates or birds. Such research would benefit from a purely acoustic communication system in which signals flow in both directions simultaneously. We designed and implemented a full duplex system to acoustically interact with cetaceans in the wild, featuring digital echo-suppression. We pilot tested the system in Arctic Norway and achieved an echo suppression of 18 dB leaving room for technical improvements addressed in the discussion. Nevertheless, the system enabled vocal interaction with the underwater acoustic scene by allowing experimenters to listen while producing sounds. We describe our motivations, then present our pilot deployment and give examples of initial explorative attempts to vocally interact with wild orcas and humpback whales.

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Acoustic behaviour of bottlenose dolphins under human care while performing synchronous aerial jumps

Cited by 3 publications

References 37 publications

Multimodal imitative learning and synchrony in cetaceans: A model for speech and singing evolution

Multimodal imitative learning and synchrony in cetaceans: A model for speech and singing evolution

Full-duplex acoustic interaction system for cognitive experiments with cetaceans

Full-duplex acoustic interaction system for cognitive experiments with cetaceans

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