Speed of call delivery is related to context and caller identity in Campbell’s monkey males |
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Authors: | Alban Lemasson Karim Ouattara Hélène Bouchet Klaus Zuberbühler |
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Institution: | 1. Ethologie Animale et Humaine, U.M.R.6552-C.N.R.S, Université de Rennes 1, Station Biologique, 35380, Paimpont, France 2. Laboratoire de Zoologie et Biologie Animale, Université de Cocody, 10 BP770, Abidjan 10, C?te d’Ivoire 4. Centre Suisse de Recherches Scientifiques, Ta? Monkey Project, 01 BP1303, Abidjan 01, C?te d’Ivoire 3. School of Psychology, University of St Andrews, KY16 9JP, St Andrews, Scotland, UK
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Abstract: | Call rate can be a salient feature in animal communication. Depending on the species, different psychological variables appear
to influence call rates but the exact nature of these relationships remains poorly explored. Here, we demonstrate for free-ranging
Campbell’s monkeys that the call rates of four different alarm series (termed H, K, K+, and B series) vary systematically as a function of context, associated behaviour, and identity of the caller. K+ series were given more rapidly to predation than non-predation events, K+ and K series more rapidly to visual than auditory predator detection, and H series more rapidly while counterattacking an
eagle than staying put. Finally, there were individual differences in B series, suggesting that call rate potentially provides
listeners with cues about the caller’s anti-predator behaviour, event type experienced, and his identity. |
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