Vocal discrimination of African lions and its potential for collar-free tracking
| Autor: | Byron du Preez, Paul Trethowan, Simon Chamaillé-Jammes, Andrew Markham, Matthew Wijers, Andrew J. Loveridge, David W. Macdonald |
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| Přispěvatelé: | Department of Zoology [Oxford], University of Oxford [Oxford], Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Computer Science [Oxford], University of Oxford, Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Passive acoustic monitoring Speech recognition [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph] Spectral structure 010603 evolutionary biology 01 natural sciences Collar passive acoustic monitoring biology.animal vocalisation 0501 psychology and cognitive sciences vocal individuality 050102 behavioral science & comparative psychology fundamental frequency Ecology Evolution Behavior and Systematics [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] Ecology biology [SDE.IE]Environmental Sciences/Environmental Engineering 05 social sciences 15. Life on land Geography Panthera [SDE.BE]Environmental Sciences/Biodiversity and Ecology African lion |
| Zdroj: | Bioacoustics Bioacoustics, Taylor and Francis, In press, ⟨10.1080/09524622.2020.1829050⟩ Bioacoustics, In press, ⟨10.1080/09524622.2020.1829050⟩ |
| ISSN: | 0952-4622 |
| DOI: | 10.1080/09524622.2020.1829050⟩ |
| Popis: | International audience; Previous research has shown that African lions (Panthera leo) have the ability to discriminate between conspecific vocalisations, but little is known about how individual identity is conveyed in the spectral structure of roars. Using acoustic – accelerometer biologgers that allow vocalisations to be reliably associated with individual identity, we test for vocal individuality in the fundamental frequency (f0) of roars from 5 male lions, firstly by comparing simple f0 summary features and secondly by modelling the temporal pattern of the f0 contour. We then assess the application of this method for discriminating between individuals using passive acoustic monitoring. Results indicate that f0 summary features only allow for vocal discrimination with 70.7% accuracy. By comparison, vocal discrimination can be achieved with an accuracy of 91.5% based on individual differences in the temporal pattern of the f0 sequence. We further demonstrate that passively recorded lion roars can be localised and differentiated with similar accuracy. The existence of individually unique f0 contours in lion roars and their relatively lower attenuation indicates a likely mechanism enabling individual lions to identify conspecifics over long distances. These differences can be exploited by researchers to track individuals across the landscape and thereby supplement conventional lion monitoring approaches. |
| Databáze: | OpenAIRE |
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