Spatial movement foraging strategies among free-ranging Japanese macaques (Macaca fuscata)

Poster session
Partie de:
11:30, vendredi 20 déc. 2019 (1 heure)
Dîner   12:30 PM à 01:30 PM (1 heure)
Salle ABCD

Research has shown that nonhuman primates are capable of making intentional, directional movement choices in order to solve spatial navigation problems in foraging. To-date, there are few studies that consider if non-social factors influence route choice (e.g. distance travelled) or foraging time. Additionally, there are no studies that examine the effect of disability on movement choices. Here, we tested the hypothesis that non-social and social context, such as disability and rank, influence route choice decision-making in foraging. The study took place at the Awajishima Monkey Centre, on Awaji Island, Japan, where a large group of free-ranging Japanese macaques (Macaca fuscata) visits. This particular group has a high incidence of congenital limb malformations; infants are often born with disabilities ranging in severity from missing digits to absent hands or feet. In order to test the hypothesis, we conducted a multi-destination foraging experiment; made up of six tables and set out in a Z-shaped array, each table was equipped with a video camera in order to (1) record chosen routes and (2) trial times, and (3) for monkey identification. This experiment will allow us to observe whether (1) preferred routes were optimal; (2) if commonly observed heuristics (e.g. nearest neighbour) in other primates foraging studies are also being used among the Awajishima group; and, (3) how social and non-social factors might influence route length or trial run times. Further insight into individual variation in route choice will provide a better overall understanding of group-level movements and the process underlying foraging decisions.


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