Social complexity parallels vocal complexity: a comparison of three nonhuman primate species
Social factors play a key role in the structuring of vocal repertoires at the individual level, notably in nonhuman primates. Some authors suggested that, at the species level too, social life may have driven the evolution of communicative complexity, but this has rarely been empirically tested. He...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Frontiers Media S.A.
2013-07-01
|
Series: | Frontiers in Psychology |
Subjects: | |
Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00390/full |
id |
doaj-019c6071720a4bc4b377fa8ca81bb64a |
---|---|
record_format |
Article |
spelling |
doaj-019c6071720a4bc4b377fa8ca81bb64a2020-11-25T00:00:27ZengFrontiers Media S.A.Frontiers in Psychology1664-10782013-07-01410.3389/fpsyg.2013.0039042668Social complexity parallels vocal complexity: a comparison of three nonhuman primate speciesHélène eBOUCHET0Hélène eBOUCHET1Catherine eBlois-Heulin2Alban eLemasson3Alban eLemasson4Université de Rennes 1 - CNRSPrimate Research Institute, Kyoto UniversityUniversité de Rennes 1 - CNRSUniversité de Rennes 1 - CNRSInstitut Universitaire de FranceSocial factors play a key role in the structuring of vocal repertoires at the individual level, notably in nonhuman primates. Some authors suggested that, at the species level too, social life may have driven the evolution of communicative complexity, but this has rarely been empirically tested. Here, we use a comparative approach to address this issue. We investigated vocal variability, at both the call type and the repertoire levels, in three forest-dwelling species of Cercopithecinae presenting striking differences in their social systems, in terms of social organization as well as social structure. We collected female call recordings from twelve De Brazza’s monkeys (Cercopithecus neglectus), six Campbell’s monkeys (Cercopithecus campbelli) and seven red-capped mangabeys (Cercocebus torquatus) housed in similar conditions. First, we noted that the level of acoustic variability and individual distinctiveness found in several call types was related to their importance in social functioning. Contact calls, essential to intra-group cohesion, were the most individually distinctive regardless of the species, while threat calls were more structurally variable in mangabeys, the most ‘despotic’ of our three species. Second, we found a parallel between the degree of complexity of the species’ social structure and the size, diversity, and usage of its vocal repertoire. Mangabeys (most complex social structure) called twice as often as guenons and displayed the largest and most complex repertoire. De Brazza’s monkeys (simplest social structure) displayed the smallest and simplest repertoire. Campbell’s monkeys displayed an intermediate pattern. Providing evidence of higher levels of vocal variability in species presenting a more complex social system, our results are in line with the theory of a social-vocal coevolution of communicative abilities, opening new perspectives for comparative research on the evolution of communication systems in different animal taxa.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00390/fullevolution of communicationacoustic variabilityacoustic individual distinctivenessvocal repertoiresocial systemCercopithecus sp. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hélène eBOUCHET Hélène eBOUCHET Catherine eBlois-Heulin Alban eLemasson Alban eLemasson |
spellingShingle |
Hélène eBOUCHET Hélène eBOUCHET Catherine eBlois-Heulin Alban eLemasson Alban eLemasson Social complexity parallels vocal complexity: a comparison of three nonhuman primate species Frontiers in Psychology evolution of communication acoustic variability acoustic individual distinctiveness vocal repertoire social system Cercopithecus sp. |
author_facet |
Hélène eBOUCHET Hélène eBOUCHET Catherine eBlois-Heulin Alban eLemasson Alban eLemasson |
author_sort |
Hélène eBOUCHET |
title |
Social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
title_short |
Social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
title_full |
Social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
title_fullStr |
Social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
title_full_unstemmed |
Social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
title_sort |
social complexity parallels vocal complexity: a comparison of three nonhuman primate species |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Psychology |
issn |
1664-1078 |
publishDate |
2013-07-01 |
description |
Social factors play a key role in the structuring of vocal repertoires at the individual level, notably in nonhuman primates. Some authors suggested that, at the species level too, social life may have driven the evolution of communicative complexity, but this has rarely been empirically tested. Here, we use a comparative approach to address this issue. We investigated vocal variability, at both the call type and the repertoire levels, in three forest-dwelling species of Cercopithecinae presenting striking differences in their social systems, in terms of social organization as well as social structure. We collected female call recordings from twelve De Brazza’s monkeys (Cercopithecus neglectus), six Campbell’s monkeys (Cercopithecus campbelli) and seven red-capped mangabeys (Cercocebus torquatus) housed in similar conditions. First, we noted that the level of acoustic variability and individual distinctiveness found in several call types was related to their importance in social functioning. Contact calls, essential to intra-group cohesion, were the most individually distinctive regardless of the species, while threat calls were more structurally variable in mangabeys, the most ‘despotic’ of our three species. Second, we found a parallel between the degree of complexity of the species’ social structure and the size, diversity, and usage of its vocal repertoire. Mangabeys (most complex social structure) called twice as often as guenons and displayed the largest and most complex repertoire. De Brazza’s monkeys (simplest social structure) displayed the smallest and simplest repertoire. Campbell’s monkeys displayed an intermediate pattern. Providing evidence of higher levels of vocal variability in species presenting a more complex social system, our results are in line with the theory of a social-vocal coevolution of communicative abilities, opening new perspectives for comparative research on the evolution of communication systems in different animal taxa. |
topic |
evolution of communication acoustic variability acoustic individual distinctiveness vocal repertoire social system Cercopithecus sp. |
url |
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00390/full |
work_keys_str_mv |
AT heleneebouchet socialcomplexityparallelsvocalcomplexityacomparisonofthreenonhumanprimatespecies AT heleneebouchet socialcomplexityparallelsvocalcomplexityacomparisonofthreenonhumanprimatespecies AT catherineebloisheulin socialcomplexityparallelsvocalcomplexityacomparisonofthreenonhumanprimatespecies AT albanelemasson socialcomplexityparallelsvocalcomplexityacomparisonofthreenonhumanprimatespecies AT albanelemasson socialcomplexityparallelsvocalcomplexityacomparisonofthreenonhumanprimatespecies |
_version_ |
1725445024639877120 |