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The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals

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The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals. / Melo-Santos, Gabriel; Figueiredo Rodrigues, Angélica Lúcia; Tardin, Rodrigo Hipólito; Maciel, Israel de Sá; Marmontel, Miriam; da Silva, Maria Luisa; May-Collado, Laura Johanna.

In: PeerJ, Vol. 7, e6670, 19.04.2019.

Research output: Contribution to journalArticle

Harvard

Melo-Santos, G, Figueiredo Rodrigues, AL, Tardin, RH, Maciel, IDS, Marmontel, M, da Silva, ML & May-Collado, LJ 2019, 'The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals' PeerJ, vol. 7, e6670. https://doi.org/10.7717/peerj.6670

APA

Melo-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, 7, [e6670]. https://doi.org/10.7717/peerj.6670

Vancouver

Melo-Santos G, Figueiredo Rodrigues AL, Tardin RH, Maciel IDS, Marmontel M, da Silva ML et al. The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals. PeerJ. 2019 Apr 19;7. e6670. https://doi.org/10.7717/peerj.6670

Author

Melo-Santos, Gabriel ; Figueiredo Rodrigues, Angélica Lúcia ; Tardin, Rodrigo Hipólito ; Maciel, Israel de Sá ; Marmontel, Miriam ; da Silva, Maria Luisa ; May-Collado, Laura Johanna. / The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals. In: PeerJ. 2019 ; Vol. 7.

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@article{1469cdae9cc84864a93a4e26d7cf2c2f,
title = "The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals",
abstract = "The 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.",
keywords = "Boto, Behavior, Acoustic communication, Mother-calf pairs, Non-linear phenomena",
author = "Gabriel Melo-Santos and {Figueiredo Rodrigues}, {Ang{\'e}lica L{\'u}cia} and Tardin, {Rodrigo Hip{\'o}lito} and Maciel, {Israel de S{\'a}} and Miriam Marmontel and {da Silva}, {Maria Luisa} and May-Collado, {Laura Johanna}",
note = "This 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.",
year = "2019",
month = "4",
day = "19",
doi = "10.7717/peerj.6670",
language = "English",
volume = "7",
journal = "PeerJ",
issn = "2167-8359",
publisher = "PEERJ INC",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartiodactyla, Iniidae), produce a diverse repertoire of acoustic signals

AU - Melo-Santos, Gabriel

AU - Figueiredo Rodrigues, Angélica Lúcia

AU - Tardin, Rodrigo Hipólito

AU - Maciel, Israel de Sá

AU - Marmontel, Miriam

AU - da Silva, Maria Luisa

AU - May-Collado, Laura Johanna

N1 - This 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.

PY - 2019/4/19

Y1 - 2019/4/19

N2 - The 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.

AB - The 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.

KW - Boto

KW - Behavior

KW - Acoustic communication

KW - Mother-calf pairs

KW - Non-linear phenomena

U2 - 10.7717/peerj.6670

DO - 10.7717/peerj.6670

M3 - Article

VL - 7

JO - PeerJ

T2 - PeerJ

JF - PeerJ

SN - 2167-8359

M1 - e6670

ER -

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ID: 258687514