Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin

Abstract Acoustical geographic variation is common in widely distributed species and it is already described for several taxa, at various scales. In cetaceans, intraspecific variation in acoustic repertoires has been linked to ecological factors, geographical barriers, and social processes. For the...

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Autores principales:	A. R. Luís, L. J. May-Collado, N. Rako-Gospić, T. Gridley, E. Papale, A. Azevedo, M. A. Silva, G. Buscaino, D. Herzing, M. E. dos Santos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c9f51adb601c44408fd8cd8411af9294
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spelling	oai:doaj.org-article:c9f51adb601c44408fd8cd8411af92942021-12-02T15:02:48ZVocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin10.1038/s41598-021-90710-92045-2322https://doaj.org/article/c9f51adb601c44408fd8cd8411af92942021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90710-9https://doaj.org/toc/2045-2322Abstract Acoustical geographic variation is common in widely distributed species and it is already described for several taxa, at various scales. In cetaceans, intraspecific variation in acoustic repertoires has been linked to ecological factors, geographical barriers, and social processes. For the common bottlenose dolphin (Tursiops truncatus), studies on acoustic variability are scarce, focus on a single signal type—whistles and on the influence of environmental variables. Here, we analyze the acoustic emissions of nine bottlenose dolphin populations across the Atlantic Ocean and the Mediterranean Sea, and identify common signal types and acoustic variants to assess repertoires’ (dis)similarity. Overall, these dolphins present a rich acoustic repertoire, with 24 distinct signal sub-types including: whistles, burst-pulsed sounds, brays and bangs. Acoustic divergence was observed only in social signals, suggesting the relevance of cultural transmission in geographic variation. The repertoire dissimilarity values were remarkably low (from 0.08 to 0.4) and do not reflect the geographic distances among populations. Our findings suggest that acoustic ecology may play an important role in the occurrence of intraspecific variability, as proposed by the ‘environmental adaptation hypothesis’. Further work may clarify the boundaries between neighboring populations, and shed light into vocal learning and cultural transmission in bottlenose dolphin societies.A. R. LuísL. J. May-ColladoN. Rako-GospićT. GridleyE. PapaleA. AzevedoM. A. SilvaG. BuscainoD. HerzingM. E. dos SantosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. R. Luís L. J. May-Collado N. Rako-Gospić T. Gridley E. Papale A. Azevedo M. A. Silva G. Buscaino D. Herzing M. E. dos Santos Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
description	Abstract Acoustical geographic variation is common in widely distributed species and it is already described for several taxa, at various scales. In cetaceans, intraspecific variation in acoustic repertoires has been linked to ecological factors, geographical barriers, and social processes. For the common bottlenose dolphin (Tursiops truncatus), studies on acoustic variability are scarce, focus on a single signal type—whistles and on the influence of environmental variables. Here, we analyze the acoustic emissions of nine bottlenose dolphin populations across the Atlantic Ocean and the Mediterranean Sea, and identify common signal types and acoustic variants to assess repertoires’ (dis)similarity. Overall, these dolphins present a rich acoustic repertoire, with 24 distinct signal sub-types including: whistles, burst-pulsed sounds, brays and bangs. Acoustic divergence was observed only in social signals, suggesting the relevance of cultural transmission in geographic variation. The repertoire dissimilarity values were remarkably low (from 0.08 to 0.4) and do not reflect the geographic distances among populations. Our findings suggest that acoustic ecology may play an important role in the occurrence of intraspecific variability, as proposed by the ‘environmental adaptation hypothesis’. Further work may clarify the boundaries between neighboring populations, and shed light into vocal learning and cultural transmission in bottlenose dolphin societies.
format	article
author	A. R. Luís L. J. May-Collado N. Rako-Gospić T. Gridley E. Papale A. Azevedo M. A. Silva G. Buscaino D. Herzing M. E. dos Santos
author_facet	A. R. Luís L. J. May-Collado N. Rako-Gospić T. Gridley E. Papale A. Azevedo M. A. Silva G. Buscaino D. Herzing M. E. dos Santos
author_sort	A. R. Luís
title	Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
title_short	Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
title_full	Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
title_fullStr	Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
title_full_unstemmed	Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
title_sort	vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c9f51adb601c44408fd8cd8411af9294
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Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin

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