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Repeated downsweep vocalizations of the Araguaian river dolphin, Inia araguaiaensis
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dc.contributor.author | Melo-Santos, Gabriel | |
dc.contributor.author | Walmsley, Sam F. | |
dc.contributor.author | Marmontel, Miriam | |
dc.contributor.author | Oliveira-da-Costa , Marcelo | |
dc.contributor.author | Janik, Vincent M. | |
dc.date.accessioned | 2020-08-04T23:34:10Z | |
dc.date.available | 2020-08-04T23:34:10Z | |
dc.date.issued | 2020-02 | |
dc.identifier.citation | Melo-Santos , G , Walmsley , S F , Marmontel , M , Oliveira-da-Costa , M & Janik , V M 2020 , ' Repeated downsweep vocalizations of the Araguaian river dolphin, Inia araguaiaensis ' , Journal of the Acoustical Society of America , vol. 147 , pp. 748-756 . https://doi.org/10.1121/10.0000624 | en |
dc.identifier.issn | 0001-4966 | |
dc.identifier.other | PURE: 265576239 | |
dc.identifier.other | PURE UUID: 1d39ac6d-c45c-4f2d-88bf-bfccb70d07a0 | |
dc.identifier.other | ORCID: /0000-0003-0359-2307/work/68647967 | |
dc.identifier.other | ORCID: /0000-0001-7894-0121/work/68647990 | |
dc.identifier.other | Scopus: 85079244168 | |
dc.identifier.other | WOS: 000602581700001 | |
dc.identifier.uri | https://hdl.handle.net/10023/20405 | |
dc.description | Funding was provided by the Swarosvki Foundation and World Wide Fund for Nature Brazil. | en |
dc.description.abstract | Araguaian botos (Inia araguaiaensis) are known to produce pulsed as well as tonal sounds. This study documents the first evidence for repetitive sequences of downsweep whistles in botos that appear to be shared between individuals, and the context of their occurrence is investigated. Boat surveys were conducted along the Tocantins River located in the Eastern Amazon over a period of 42 days between 2012 and 2018. Eighty-two groups of Araguaian botos were observed, and 43 h of sound recordings were acquired. 632 downsweep whistles were recorded in 10 encounters. Four of these encounters contained downsweep bouts (21 bouts with ≥2 whistles) with short inter-call intervals (bout criterion 50 s) and up to 161 whistles. A statistical relationship was not found between downsweep occurrence and any of the contextual parameters that were investigated, including socializing, travelling, feeding, group size, presence of calves, and socio-sexual displays. The rarity of these signals makes them unlikely candidates for individual or group identification. It is more likely that they are associated with very specific contexts, such as nursing or mating, both of which were rarely observed in this study. Further studies are required to investigate context specificity and elucidate the function of these signals. | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of the Acoustical Society of America | en |
dc.rights | Copyright © 2020 Acoustical Society of America. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1121/10.0000624 | en |
dc.subject | GC Oceanography | en |
dc.subject | QH301 Biology | en |
dc.subject | NDAS | en |
dc.subject.lcc | GC | en |
dc.subject.lcc | QH301 | en |
dc.title | Repeated downsweep vocalizations of the Araguaian river dolphin, Inia araguaiaensis | en |
dc.type | Journal article | en |
dc.description.version | Postprint | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. School of Biology | en |
dc.contributor.institution | University of St Andrews. Sea Mammal Research Unit | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Social Learning & Cognitive Evolution | en |
dc.contributor.institution | University of St Andrews. Bioacoustics group | en |
dc.identifier.doi | https://doi.org/10.1121/10.0000624 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2020-08-05 |
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