Stick-weaving: Innovative behavior in tamarins (Saguinus oedipus).

Food-sharing in cotton-top tamarins (Saguinus oedipus).

Food-sharing behaviour was observed in 9 captive families of cotton-top tamarins (range 4-14 individuals per group), during meals of fresh fruit. Food was transferred to infants by their parents and older sibs in response to begging, and was also offered to them without prior solicitation. Older, mature, reproductively suppressed individuals shared more than young immature monkeys. Infants in l...

Spontaneous pathology of the common marmoset (Callithrix jacchus) and tamarins (Saguinus oedipus, Saguinus mystax).

BACKGROUND Marmosets and tamarins are increasingly used in research, but their pathology remains poorly defined compared with Old World primates. METHODS Necropsy records of 129 marmosets and 52 tamarins were reviewed; none was used experimentally. RESULTS The most common marmoset lesions were dehydration, emaciation, nephritis, colitis, and inanition. The most common tamarin lesions were d...

Problem solving, inhibition and domain-specific experience: experiments on cottontop tamarins, Saguinus oedipus

We present the results of experiments on cottontop tamarins designed to explore the relationship between problem solving, inhibitory control and domain-specific experience. The colony was divided into two groups: tool-experienced (TE) and tool-inexperienced (TI). The TE group had previously participated in a series of tool-use experiments and revealed that, when selecting a tool, they used feat...

Activity Profiles and Hormone Metabolites in a Captive Group of Eight Cotton - Top Tamarins , Saguinus oedipus

Cotton-top tamarins (Saguinus oedipus) fail to show mirror-guided self-exploration.

To investigate the problem of inter- and intraspecific differences on the mirror test, we conducted two experiments on cotton-top tamarins. Experiment 1 employed a technique similar to one used recently on chimpanzees, and provided no evidence of mirror-mediated touching of the marked area. In a control condition, involving colored dye applied to one arm, two subjects also failed to show self-d...