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dc.contributor.authorMelo-Santos, Gabriel
dc.contributor.authorFigueiredo Rodrigues, Angélica Lúcia
dc.contributor.authorTardin, Rodrigo Hipólito
dc.contributor.authorMaciel, Israel de Sá
dc.contributor.authorMarmontel, Miriam
dc.contributor.authorda Silva, Maria Luisa
dc.contributor.authorMay-Collado, Laura Johanna
dc.identifier.citationMelo-Santos , G , Figueiredo Rodrigues , A L , Tardin , R H , Maciel , I D S , Marmontel , M , da Silva , M L & May-Collado , L J 2019 , ' The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals ' , PeerJ , vol. 7 , e6670 .
dc.identifier.otherRIS: urn:B6D388981F986AB29711A38DDA210710
dc.identifier.otherORCID: /0000-0003-0359-2307/work/60427741
dc.descriptionThis work was funded by the Rufford Foundation and Cetacean Society International. Gabriel Melo-Santos received a scholarship from the CAPES Foundation from the Brazilian Ministry of Education. Funding was also contributed by the Swarovski Foundation.en
dc.description.abstractThe recent discovery of the Araguaian river dolphin (Inia araguaiaensis) highlights how little we know about the diversity and biology of river dolphins. In this study, we described the acoustic repertoire of this newly discovered species in concert with their behaviour. We analysed frequency contours of 727 signals (sampled at 10 ms temporal resolution). These contours were analyzed using an adaptive resonance theory neural network combined with dynamic time-warping (ARTwarp). Using a critical similarity value of 96%, frequency contours were categorized into 237 sound-types. The most common types were emitted when calves were present suggesting a key role in mother-calf communication. Our findings show that the acoustic repertoire of river dolphins is far from simple. Furthermore, the calls described here are similar in acoustic structure to those produced by social delphinids, such as orcas and pilot whales. Uncovering the context in which these signals are produced may help understand the social structure of this species and contribute to our understanding of the evolution of acoustic communication in whales.
dc.subjectAcoustic communicationen
dc.subjectMother-calf pairsen
dc.subjectNon-linear phenomenaen
dc.subjectQH301 Biologyen
dc.titleThe newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signalsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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