Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin
| Autor: | M. E. dos Santos, Ana Francisca de Azevedo, Ana Rita Luís, D. Herzing, Laura J. May-Collado, T. Gridley, Mónica A. Silva, Giuseppa Buscaino, Elena Papale, N. Rako-Gospić |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Sound Spectrography Behavioural ecology Science 010603 evolutionary biology 01 natural sciences Article Intraspecific competition Mediterranean Sea Animals 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Atlantic Ocean Cultural transmission in animals Marine biology Multidisciplinary Behavior Animal Ecology Geography biology Repertoire 05 social sciences Acoustic ecology Acoustics Biodiversity Animal behaviour Bottlenose dolphin biology.organism_classification Bottle-Nosed Dolphin Sound Taxon Variation (linguistics) Evolutionary biology Medicine Vocal learning Vocalization Animal |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021) Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | 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. Fundação para a Ciência e Tecnologia - FCT info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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