Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)

Abstract Vocal expression of emotions has been suggested to be conserved throughout evolution. However, since vocal indicators of emotions have never been compared between closely related species using similar methods, it remains unclear whether this is the case. Here, we investigated vocal indicato...

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Autores principales:	Anne-Laure Maigrot, Edna Hillmann, Callista Anne, Elodie F. Briefer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ecf54eb6215542b48178d71078748d79
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spelling	oai:doaj.org-article:ecf54eb6215542b48178d71078748d792021-12-02T15:06:22ZVocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)10.1038/s41598-017-09437-12045-2322https://doaj.org/article/ecf54eb6215542b48178d71078748d792017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09437-1https://doaj.org/toc/2045-2322Abstract Vocal expression of emotions has been suggested to be conserved throughout evolution. However, since vocal indicators of emotions have never been compared between closely related species using similar methods, it remains unclear whether this is the case. Here, we investigated vocal indicators of emotional valence (negative versus positive) in Przewalski’s horses, in order to find out if expression of valence is similar between species and notably among Equidae through a comparison with previous results obtained in domestic horse whinnies. We observed Przewalski’s horses in naturally occurring contexts characterised by positive or negative valence. As emotional arousal (bodily activation) can act as a confounding factor in the search for indicators of valence, we controlled for its effect on vocal parameters using a behavioural indicator (movement). We found that positive and negative situations were associated with specific types of calls. Additionally, the acoustic structure of calls differed according to the valence. There were some similarities but also striking differences in expression of valence between Przewalski’s and domestic horses, suggesting that vocal expression of emotional valence, unlike emotional arousal, could be species specific rather than conserved throughout evolution.Anne-Laure MaigrotEdna HillmannCallista AnneElodie F. BrieferNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anne-Laure Maigrot Edna Hillmann Callista Anne Elodie F. Briefer Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
description	Abstract Vocal expression of emotions has been suggested to be conserved throughout evolution. However, since vocal indicators of emotions have never been compared between closely related species using similar methods, it remains unclear whether this is the case. Here, we investigated vocal indicators of emotional valence (negative versus positive) in Przewalski’s horses, in order to find out if expression of valence is similar between species and notably among Equidae through a comparison with previous results obtained in domestic horse whinnies. We observed Przewalski’s horses in naturally occurring contexts characterised by positive or negative valence. As emotional arousal (bodily activation) can act as a confounding factor in the search for indicators of valence, we controlled for its effect on vocal parameters using a behavioural indicator (movement). We found that positive and negative situations were associated with specific types of calls. Additionally, the acoustic structure of calls differed according to the valence. There were some similarities but also striking differences in expression of valence between Przewalski’s and domestic horses, suggesting that vocal expression of emotional valence, unlike emotional arousal, could be species specific rather than conserved throughout evolution.
format	article
author	Anne-Laure Maigrot Edna Hillmann Callista Anne Elodie F. Briefer
author_facet	Anne-Laure Maigrot Edna Hillmann Callista Anne Elodie F. Briefer
author_sort	Anne-Laure Maigrot
title	Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
title_short	Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
title_full	Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
title_fullStr	Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
title_full_unstemmed	Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)
title_sort	vocal expression of emotional valence in przewalski’s horses (equus przewalskii)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ecf54eb6215542b48178d71078748d79
work_keys_str_mv	AT annelauremaigrot vocalexpressionofemotionalvalenceinprzewalskishorsesequusprzewalskii AT ednahillmann vocalexpressionofemotionalvalenceinprzewalskishorsesequusprzewalskii AT callistaanne vocalexpressionofemotionalvalenceinprzewalskishorsesequusprzewalskii AT elodiefbriefer vocalexpressionofemotionalvalenceinprzewalskishorsesequusprzewalskii
_version_	1718388487654211584

Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii)

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