Suffixation influences receivers' behaviour in non-human primates. Coye, C., Ouattara, K., Zuberbühler, K., & Lemasson, A. Proc Biol Sci, 2015. doi abstract bibtex Compared to humans, non-human primates have very little control over their vocal production. Nonetheless, some primates produce various call combinations, which may partially offset their lack of acoustic flexibility. A relevant example is male Campbell's monkeys (Cercopithecus campbelli), which give one call type ('Krak') to leopards, while the suffixed version of the same call stem ('Krak-oo') is given to unspecific danger. To test whether recipients attend to this suffixation pattern, we carried out a playback experiment in which we broadcast naturally and artificially modified suffixed and unsuffixed 'Krak' calls of male Campbell's monkeys to 42 wild groups of Diana monkeys (Cercopithecus diana diana). The two species form mixed-species groups and respond to each other's vocalizations. We analysed the vocal response of male and female Diana monkeys and overall found significantly stronger vocal responses to unsuffixed (leopard) than suffixed (unspecific danger) calls. Although the acoustic structure of the 'Krak' stem of the calls has some additional effects, subject responses were mainly determined by the presence or the absence of the suffix. This study indicates that suffixation is an evolved function in primate communication in contexts where adaptive responses are particularly important.
@Article{Coye2015,
author = {Coye, Camille and Ouattara, Karim and Zuberb\"uhler, Klaus and Lemasson, Alban},
journal = {Proc Biol Sci},
title = {Suffixation influences receivers' behaviour in non-human primates.},
year = {2015},
number = {1807},
volume = {282},
abstract = {Compared to humans, non-human primates have very little control over
their vocal production. Nonetheless, some primates produce various
call combinations, which may partially offset their lack of acoustic
flexibility. A relevant example is male Campbell's monkeys (Cercopithecus
campbelli), which give one call type ('Krak') to leopards, while
the suffixed version of the same call stem ('Krak-oo') is given to
unspecific danger. To test whether recipients attend to this suffixation
pattern, we carried out a playback experiment in which we broadcast
naturally and artificially modified suffixed and unsuffixed 'Krak'
calls of male Campbell's monkeys to 42 wild groups of Diana monkeys
(Cercopithecus diana diana). The two species form mixed-species groups
and respond to each other's vocalizations. We analysed the vocal
response of male and female Diana monkeys and overall found significantly
stronger vocal responses to unsuffixed (leopard) than suffixed (unspecific
danger) calls. Although the acoustic structure of the 'Krak' stem
of the calls has some additional effects, subject responses were
mainly determined by the presence or the absence of the suffix. This
study indicates that suffixation is an evolved function in primate
communication in contexts where adaptive responses are particularly
important.},
doi = {10.1098/rspb.2015.0265},
institution = {Laboratoire EthoS, Universit\'e de Rennes 1, U.M.R 6552-C.N.R.S, Station Biologique de Paimpont, 35380, Paimpont, France Centre Suisse de Recherches Scientifiques, Ta\"i Monkey Project, Adiopodoum\'e, Abidjan Ivory Coast Institut Universitaire de France, 75005 Paris, France.},
language = {eng},
medline-pst = {ppublish},
pmid = {25925101},
timestamp = {2015.05.01},
}
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A relevant example is male Campbell's monkeys (Cercopithecus campbelli), which give one call type ('Krak') to leopards, while the suffixed version of the same call stem ('Krak-oo') is given to unspecific danger. To test whether recipients attend to this suffixation pattern, we carried out a playback experiment in which we broadcast naturally and artificially modified suffixed and unsuffixed 'Krak' calls of male Campbell's monkeys to 42 wild groups of Diana monkeys (Cercopithecus diana diana). The two species form mixed-species groups and respond to each other's vocalizations. We analysed the vocal response of male and female Diana monkeys and overall found significantly stronger vocal responses to unsuffixed (leopard) than suffixed (unspecific danger) calls. Although the acoustic structure of the 'Krak' stem of the calls has some additional effects, subject responses were mainly determined by the presence or the absence of the suffix. This study indicates that suffixation is an evolved function in primate communication in contexts where adaptive responses are particularly important.","doi":"10.1098/rspb.2015.0265","institution":"Laboratoire EthoS, Université de Rennes 1, U.M.R 6552-C.N.R.S, Station Biologique de Paimpont, 35380, Paimpont, France Centre Suisse de Recherches Scientifiques, Taï Monkey Project, Adiopodoumé, Abidjan Ivory Coast Institut Universitaire de France, 75005 Paris, France.","language":"eng","medline-pst":"ppublish","pmid":"25925101","timestamp":"2015.05.01","bibtex":"@Article{Coye2015,\n author = {Coye, Camille and Ouattara, Karim and Zuberb\\\"uhler, Klaus and Lemasson, Alban},\n journal = {Proc Biol Sci},\n title = {Suffixation influences receivers' behaviour in non-human primates.},\n year = {2015},\n number = {1807},\n volume = {282},\n abstract = {Compared to humans, non-human primates have very little control over\n\ttheir vocal production. Nonetheless, some primates produce various\n\tcall combinations, which may partially offset their lack of acoustic\n\tflexibility. A relevant example is male Campbell's monkeys (Cercopithecus\n\tcampbelli), which give one call type ('Krak') to leopards, while\n\tthe suffixed version of the same call stem ('Krak-oo') is given to\n\tunspecific danger. To test whether recipients attend to this suffixation\n\tpattern, we carried out a playback experiment in which we broadcast\n\tnaturally and artificially modified suffixed and unsuffixed 'Krak'\n\tcalls of male Campbell's monkeys to 42 wild groups of Diana monkeys\n\t(Cercopithecus diana diana). The two species form mixed-species groups\n\tand respond to each other's vocalizations. We analysed the vocal\n\tresponse of male and female Diana monkeys and overall found significantly\n\tstronger vocal responses to unsuffixed (leopard) than suffixed (unspecific\n\tdanger) calls. 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