The criteria for successful captive propagation of endangered primates
Abstract 10.1002/zoo.1430080515.abs There are several criteria used for evaluating the success of captive breeding programs for endangered primates. The most stringent criterion is that animals should be maintained in captivity so that they can retain the ability to survive if they are reintroduced to the wild. Implementing the criterion means designing environments that provide analogues […]
Responses of Cotton-Top Tamarins (Saguinus Oedipus) to Faecal Scents of Predators and Non-predators
The responses of 56 cotton-top tamarin monkeys (Saguinus Oedipus) to the faecal scent of predators and non-predators were recorded to determine if there was a differential response. Methylene chloride extracts were prepared from the faeces of suspected predators (margay and tayra) and non-predators (capybara and paca) known to co-exist with the tamarins in the wild. […]
What Guides a Search for Food That Has Disappeared? Experiments on Cotton-Top Tamarins (Saguinus oedipus)
When food is launched down a vertically positioned S-shaped opaque tube, cotton-top tamarins (Saguinus oedipus) search for the food in the position directly beneath the release point, even though over several trials it never appears in this position (B. M. Hood et al., 1999). Experiment 1 showed that when the trajectory of the food shifts […]
Tracking responses related to self-recognition: A frequency comparison of responses to mirrors, photographs, and videotapes by cotton top tamarins (Saguinus oedipus).
The frequency of responses cotton top tamarins (Saguinus oedipus) emitted indicative of self-recognition to a mirror was compared with the frequencies of responses emitted to digitized photographs of tamarins (Experiment 1) and to videotapes of real-time or prior tamarin action (Experiment 2). Results indicated more attentional responses toward the mirror in both studies, but behavioral […]
Captive cotton-top tamarins’ (Saguinus oedipus oedipus) use of landmarks to localize hidden food items
Seventeen captive cotton-top tamarins (Saguinus oedipus oedipus) were individually tested on their use of spatial relationships between landmarks to locate multiple hidden food items. In two experiments, the tamarins were presented with a spatial-foraging task in which positions of hidden food rewards were fixed in relation to an array of visual cues. In Experiment 1, […]