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Vocal Repertoire and Intraspecific Variation within Two Loud Calls of the Small-Eared Greater Galago (Otolemur garnettii) in Tanzania and Kenya
Authors
CM Bettridge
TM Butynski
+3 more
YA De Jong
SR De Kort
SP Kenworthy
Publication date
15 August 2019
Publisher
'S. Karger AG'
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Abstract
© 2019 S. Karger AG, Basel. All rights reserved. Vocal repertoires and call structure can provide insights into the behaviour and evolution of species, as well as aid in taxonomic classification. Nocturnal primates have large vocal repertoires. This suggests that acoustic communication plays an important role in their life histories. Little is known about the behavioural context or the intraspecific variation of their vocalisations. We used autonomous recording units and manual recorders to investigate the vocal behaviour and structure of loud calls of the small-eared greater galago (Otolemur garnettii)in Kenya and Tanzania. We describe the vocal repertoire, temporal calling patterns and structure of 2 loud calls of 2 subspecies: O. g. panganiensis and O. g. kikuyuensis. We found considerable intraspecific structural differences in both loud calls. These are congruent with the current subspecies classification. Differences in vocalisations among populations are not consistent with the "acoustic adaptation hypothesis," rather they are likely a result of geographic variation due to isolation caused by vegetational barriers in southern Kenya
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Last time updated on 11/11/2020
E-space: Manchester Metropolitan University's Research Repository
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oai:e-space.mmu.ac.uk:625005
Last time updated on 26/03/2020