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A novel theory of Asian elephant high-frequency squeak production by Beeck, Veronika C. (author);Heilmann, Gunnar (author);Kerscher, Michael (author);Stoeger, Angela S. (author) is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is A novel theory of Asian elephant high-frequency squeak production about?

## Background Anatomical and cognitive adaptations to overcome morpho-mechanical limitations of laryngeal sound production, where body size and the related vocal apparatus dimensions determine the fundamental frequency, increase vocal diversity across taxa. Elephants flexibly use laryngeal and trunk-based vocalizations to form a repertoire ranging from infrasonic rumbles to higher-pitched trumpets. Moreover, they are among the few evolutionarily distantly related animals (humans, pinnipeds, cetaceans, birds) capable of imitating species-atypical sounds. Yet, their vocal plasticity has so far not been related to functions within their natural communicative system, in part because not all call types have been systematically studied. Here, we reveal how Asian elephants (__Elephas maximus)__ produce species-specific squeaks (F0 300–2300 Hz) by using acoustic camera recordings to visualize sound emission and examining this alongside acoustic, behavioral, and morphological data across seven captive groups. ## Results We found that squeaks were emitted through the closed mouth in synchrony with cheek depression and retraction of the labial angles. The simultaneous emission of squeaks with

Who reads A novel theory of Asian elephant high-frequency squeak production?

Author

Beeck, Veronika C. (author);Heilmann, Gunnar (author);Kerscher, Michael (author);Stoeger, Angela S. (author)

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)