Roland Frey

Leibniz Institute for Zoo and Wildlife Research

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Elena V. Volodina

Severtsov Institute of Ecology and Evolution

Ilya A. Volodin

Lomonosov Moscow State University

Guido Fritsch

Leibniz Institute for Zoo and Wildlife Research

Natalia V. Soldatova

Russian Customs Academy

David Reby

Centre de Recherche en Neurosciences de Lyon

Kseniya O. Efremova

Pirogov Russian National Research Medical University

Alban Gebler

German Centre for Integrative Biodiversity Research

Megan T. Wyman

University of Zurich

H. Kronschwitz

Bernstein Center for Computational Neuroscience Tübingen

Benjamin D. Charlton

San Diego Zoo Institute for Conservation Research

Cooperative Institutions

University of Vienna

Leibniz Institute for Zoo and Wildlife Research

Heidelberg University

Lomonosov Moscow State University

Leibniz Association

Friedrich-Alexander-Universität Erlangen-Nürnberg

Severtsov Institute of Ecology and Evolution

Russian Academy of Sciences

Ludwig-Maximilians-Universität München

Freie Universität Berlin

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Podiumgespräch über das Kurznarkotikum Propanidid

Anästhesiologie und Intensivmedizin (1965)

M. Zindler Ronny Beer Roland Frey H. P. Harrfeldt K Horatz

10.1007/978-3-642-46010-4_27

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Citations (1)

Nasal and oral calls in mother and young trunk-nosed saiga antelopes,Saiga tatarica

Bioacoustics (2013)

Ilya A. Volodin Olga V. Sibiryakova L. E. Kokshunova Roland Frey Elena V. Volodina

The trunk-like nose of the saiga antelope Saiga tatarica is a striking example of an exaggerated trait, assumed to having evolved as a dust filter for inhaled air. In addition, it functions to elongate the vocal tract in harem saiga males for producing low-formant calls that serve as a cue to body size for conspecifics. This study applies the source–filter theory to the acoustics of nasal, oral and nasal-and-oral calls that were recorded from a captive herd of 24 mother and 32 neonate saigas within the first 10 days postpartum. Anatomical measurements of the nasal and oral vocal tracts of two specimens (one per age class) helped to establish the settings for the analysis of formants. In both mother and young, the lower formants of nasal calls/call parts were in agreement with the source–filter theory, which suggests lower formants for the longer nasal vocal tract than for the shorter oral vocal tract. Similar fundamental frequencies of the nasal and oral parts of nasal-and-oral calls were also in agreement with the source–filter theory, which postulates the independence of source and filter. However, the fundamental frequency was higher in oral than in nasal calls, probably due to the higher emotional arousal during the production of oral calls. We discuss production mechanisms and the ontogeny of formant patterns of oral and nasal calls among bovid and cervid species with and without a trunk-like nose.

Vocal tract

10.1080/09524622.2013.826598

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Citations (26)

Altai pika (Ochotona alpina) alarm calls: individual acoustic variation and the phenomenon of call-synchronous ear folding behavior

The Science of Nature (2018)

Ilya A. Volodin Vera A. Matrosova Roland Frey Julia D. Kozhevnikova Inna L. Isaeva

Pika

Variation (astronomy)

Phenomenon

Folding (DSP implementation)

Alarm signal