Comparative Analysis of the Vocal Repertoires of the Indri (Indri indri) and the Diademed Sifaka (Propithecus diadema)

Datos Bibliográficos

ID11280384
AutoresDaria Valente (0000-0001-6086-5135, Lyon 1 Université, autor de correspondencia), Longondraza Miaretsoa (0000-0002-0403-0982, Institut Pasteur de Madagascar), Alessio Anania (0009-0003-8056-0197, University of Turin), Francesco Costa (0000-0002-3719-6508, University of Turin), Alessandra Mascaro, Teresa Raimondi (0000-0001-6767-1835, University of Turin), Chiara De Gregorio (0000-0001-7017-6181, University of Turin), Valeria Torti (0000-0002-6908-1203, University of Turin), Olivier Friard (0000-0002-0374-9872, University of Turin), Jonah Ratsimbazafy (0000-0002-7629-0476, Institut Pasteur de Madagascar), Cristina Giacoma (0000-0002-8429-7723, University of Turin), Marco Gamba (0000-0001-9545-2242, University of Turin)
Año2022
Volumen43
Número4
Páginas733-751
Fecha de publicación2022-08-01
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaInternational Journal of Primatology (JOURNAL)
Identificadores de la revistaISSN: 0164-0291 • E-ISSN: 1573-8604
EditorialSpringer Science and Business Media LLC (PUBLISHER)
DOI10.1007/s10764-022-00287-x
OpenAlexW4226313338
IdiomaEN
Citas recibidas6
Referencias citadas86

Strepsirrhine vocalisations are extraordinarily diverse and cross-species comparisons are needed to explore how this variability evolved. We contributed to the investigation of primate acoustic diversity by comparing the vocal repertoire of two sympatric lemur species, Propithecus diadema and Indri indri. These diurnal species belong to the same taxonomic family and have similar activity patterns but different social structures. These features make them excellent candidates for an investigation of the phylogenetic, environmental, and social influence on primate vocal behavior. We recorded 3 P. diadema groups in 2014 and 2016. From 1,872 recordings we selected and assigned 3814 calls to 9 a priori call types, on the basis of their acoustic structure . We implemented a reproducible technique performing an acoustic feature extraction relying on frequency bins, t-SNE data reduction, and a hard-clustering analysis. We first quantified the vocal repertoire of P. diadema , finding consistent results for the 9 putatively identified call types. When comparing this repertoire with a previously published repertoire of I. indri , we found highly species-specific repertoires, with only 2% of the calls misclassified by species identity. The loud calls of the two species were very distinct, while the low-frequency calls were more similar. Our results pinpoint the role of phylogenetic history, social and environmental features on the evolution of communicative systems and contribute to a deeper understanding of the evolutionary roots of primate vocal differentiation. We conclude by arguing that standardized and reproducible techniques, like the one we employed, allow robust comparisons and should be prioritized in the future

Animal ecology · Biology · Evolutionary biology · Lemur · Phylogenetic tree · Primate · Repertoire · Animal Behavior and Reproduction · Animal Vocal Communication and Behavior · Primate Behavior and Ecology · Ecology