Studying bonobo (Pan paniscus) locomotion using an integrated setup in a zoo environment: preliminary results
نویسندگان
چکیده
We describe a setup, in the Animal Park of Planckendael (Belgium), for an integrated study of terrestrial locomotion in bonobos (Pan paniscus). The setup consists of two orthogonal video cameras (50 Hz), and of three synchronized measurement units (250 Hz) incorporated in the floor of the walkway. Each unit consists of a force plate and a functionally coupled highresolution pressure-sensitive mat. Preliminary results show that terres-trial locomotion in bonobos is very variable. Stride length and stride fre-quency during bipedal and quadrupedal walking on the setup do not differ significantly from previously gathered data under semi-natural conditions. As an example, we present kinematic, force and plantar pressure data of one bipedal and one quadrupedal sequence. In these preliminary analyses, displacements of the center of mass are limited in the vertical direction. In both cases, the animals adopted "bent-hip, bent-knee" postures throughout the gait cycle. As for the kinematic measures, vertical ground-reaction forces are variable. A clear double-humped profile (as seen in the human "invertedpendulum" type locomotion) is not observed. Plantar pressure
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