Interspecific communication in mixed-species groups of tamarins: evidence from playback experiments
Animal Behaviour
2001
Journal Article
61
1193-1201
saddle-back tamarins Saguinus fuscicollis polyspecific associations animals mammals primates monkeys animal behavior tamarins sampling methods vocal communication communication diana monkeys long calls labiatus Parque Nacional del Manu Cocha Cashu single-species study small spatial scales ecology Madre de Dios Bibliography
Long-call vocalizations have been hypothesized to serve as communicative signals both within and between tamarin species. Prior evidence for the use of long calls as interspecific signals, however, is based solely on observations of apparent countercalling between species. I conducted playback experiments with groups of wild saddle-back tamarins, Saguinus fuscicollis, and emperor tamarins, S. imperator, to test the hypothesis that long calls function as interspecific signals between tamarin species forming polyspecific associations. Results show that in the absence of any other external cues, lone groups of saddle-back tamarins and emperor tamarins respond to the playback of long calls from both conspecific group members and heterospecific tamarins with which they associate. Playback of long calls from heterospecific tamarins elicited long calls and approaches towards the speaker. These findings are consistent with the hypothesis that long calls serve as interspecific signals between associating tamarin species.