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Social familiarity affects Diana monkey (Cercopithecus diana diana) alarm call responses in habitat-specific ways

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Zuberbuehler_2015_RSOS_Social_CCBY.pdf (540.3Kb)
Date
24/02/2016
Author
Stephan, Claudia
Zuberbuhler, Klaus
Keywords
Dear enemy effect
Nasty neighbours
Alarm calls
Familiarity
Vocal flexibility
Population differences
QL Zoology
BF Psychology
DAS
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Abstract
Male Diana monkeys produce loud and acoustically distinct alarm calls to leopards and eagles that propagate over long distances, much beyond the immediate group. Calling is often contagious, with neighbouring males responding to each other’s calls, indicating that harem males communicate both to local group members and distant competitors. Here, we tested whether male Diana monkeys responding to each other’s alarm calls discriminated familiar from unfamiliar callers in two populations in Taï Forest (Ivory Coast) and on Tiwai Island (Sierra Leone). At both sites, we found specific acoustic markers in male alarm call responses that discriminated familiar from unfamiliar callers, but response patterns were site-specific. On Tiwai Island, males responded to familiar males’ eagle alarms with ‘standard’ eagle alarm calls, whereas unfamiliar males triggered acoustically atypical eagle alarms. The opposite was found in Taï Forest where males responded to unfamiliar males’ eagle alarm calls with ‘standard’ eagle alarms, and with atypical eagle alarms to familiar males’ calls. Moreover, only Taï, but not Tiwai, males also marked familiarity with the caller in their leopard-induced alarms. We concluded that male Diana monkeys encode not only predator type but also signaller familiarity in their alarm calls, although in population-specific ways. We explain these inter-site differences in vocal behaviour in terms of differences in predation pressure and population density. We discuss the adaptive function and implications of this behaviour for the origins of acoustic flexibility in primate communication.
Citation
Stephan , C & Zuberbuhler , K 2016 , ' Social familiarity affects Diana monkey (Cercopithecus diana diana) alarm call responses in habitat-specific ways ' , Royal Society Open Science , vol. 3 , 150329 . https://doi.org/10.1098/rsos.150639
Publication
Royal Society Open Science
Status
Peer reviewed
DOI
https://doi.org/10.1098/rsos.150639
ISSN
2054-5703
Type
Journal article
Rights
Copyright 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
Description
The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007–2013)/ERC grant agreement no. 283871.
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  • University of St Andrews Research
URL
http://rsos.royalsocietypublishing.org/content/3/2/150639.figures-only
URI
http://hdl.handle.net/10023/8316

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