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Evolutionary significance of the variation in acoustic communication of a cryptic nocturnal primate radiation (Microcebus spp.)

Hasiniaina, Alida Frankline and Radespiel, Ute and Kessler, Sharon E. and Rina Evasoa, Mamy and Rasoloharijaona, Solofonirina and Randrianambinina, Blanchard and Zimmermann, Elke and Schmidt, Sabine and Scheumann, Marina (2020) 'Evolutionary significance of the variation in acoustic communication of a cryptic nocturnal primate radiation (Microcebus spp.).', Ecology and evolution, 10 (8). pp. 3784-3797.

Abstract

Acoustic phenotypic variation is of major importance for speciation and the evolution of species diversity. Whereas selective and stochastic forces shaping the acoustic divergence of signaling systems are well studied in insects, frogs, and birds, knowledge on the processes driving acoustic phenotypic evolution in mammals is limited. We quantified the acoustic variation of a call type exchanged during agonistic encounters across eight distinct species of the smallest‐bodied nocturnal primate radiation, the Malagasy mouse lemurs. The species live in two different habitats (dry forest vs. humid forest), differ in geographic distance to each other, and belong to four distinct phylogenetic clades within the genus. Genetically defined species were discriminated reliably on the phenotypic level based on their acoustic distinctiveness in a discriminant function analysis. Acoustic variation was explained by genetic distance, whereas differences in morphology, forest type, or geographic distance had no effect. The strong impact of genetics was supported by a correlation between acoustic and genetic distance and the high agreement in branching pattern between the acoustic and molecular phylogenetic trees. In sum, stochastic factors such as genetic drift best explained acoustic diversification in a social communication call of mouse lemurs.

Item Type:Article
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
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Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
Download PDF
(1454Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1002/ece3.6177
Publisher statement:© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Date accepted:18 February 2020
Date deposited:13 March 2020
Date of first online publication:12 March 2020
Date first made open access:13 March 2020

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