Social-learning abilities of wild vervet monkeys in a two-step task artificial fruit experiment

Social learning is the basis for the formation of traditions in both human and nonhuman animals. Field observations and experiments provide evidence for the existence of traditions in animals but they do not address the underlying social-learning mechanisms. We used an established laboratory experimental paradigm, the artificial fruit design, to test for copying of a […]

Animal welfare considerations in primate rehabilitation: an assessment of three vervet monkey (Chlorocebus aethiops) releases in KwaZulu-Natal, South Africa

This study evaluates the methods utilised to release and monitor three troops of rehabilitated vervet monkeys (Chlorocebus aethiops) in South Africa. In all cases, monitoring was poor and conducted over a short time-frame disallowing release outcomes to be fully assessed. Wild troops were present at two of the three locations, casting doubt upon sightings of […]

Social learning and spread of alternative means of opening an artificial fruit in four groups of vervet monkeys

Two-action experiments, in which observer individuals watch models use one of two alternative methods to achieve the same goal, have become recognized as a powerful method for studying social learning. We applied this approach to vervet monkeys, Chlorocebus aethiops, using an artificial fruit (‘vervetable’) which could be opened by either lifting a door panel on […]