Abstract
We report the results of an experiment designed to investigate whether captive cotton-top tamarins (Saguinus oedipus) selectively call back to an absent cagemate. We removed 2 individuals living in separate cages (cycling through the colony so that each individual was removed 10 times) from the homeroom and played back calls produced by one of them. The caller's cagemate, residing in the homeroom, was more likely to be the first individual to call back antiphonally than any other individual in the colony was. In support of previous work using both habituation-discrimination and phonotaxic techniques, our results show that cotton-top tamarins can recognize cagemates and possibly individuals by voice alone, and that the antiphonal playback method provides yet another tool for investigating acoustic perception in nonhuman primates.
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