Food preferences and nutrient composition in captive Southern brown howler monkeys, Alouatta guariba clamitans
Studies of food preferences in captive primates have so far mainly been restricted to frugivorous species. It was therefore the aim of the present study to assess the occurrence of spontaneous food preferences in a mainly folivorous primate, the captive Southern brown howler monkey, and to analyze whether these preferences correlate with nutrient composition. Using […]
Depressive behavior in young monkeys subjected to vertical chamber confinement
Young rhesus monkeys were confined in vertical chambers for 6 wk., and their subsequent behavior over a 9-mo. period in both a home-cage and playroom situation was compared with that of like-aged monkeys housed individually or in pairs. In comparison to both control groups, chambered monkeys exhibited excessive amounts of self-clasp and huddle, abnormally low […]