The time budget of a group of wild woolly monkeys (Lagothrix lagotricha) |
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Authors: | Thomas R Defler |
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Institution: | (1) Caparú Biological Research Station (Fundación Nature), Santa Fe de Bogotá, Colombia;(2) Estación Biológica Caparú, Fundación Natura, A. A. 53200 Bogota, Colombia |
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Abstract: | I studied a group of woolly monkeys (Lagothrix lagotricha)for 1800 hr from early 1985 until September 1987 near the lower Apaporis river of the Vaupés Department in the eastern Colombian
Amazon. The group had an activity budget of 29.9% rest, 38.8% move, 25.8% forage, and 5.5% other activities during 720 hr
of observations evenly spaced throughout this year. The only significant change in these activities during the study period
was social activity, which increased as a function of increased food supply. Average diurnal activities of resting and moving
are negatively correlated, and each activity show significant changes during the day, while foraging show no significant change.
The activity budgets of the adult males and females are not significantly different, but the activities of the juveniles and
infants showed much more social activity than the adults. High moving scores may be correlated with the comparative infertility
of the soils of the Caparú forest, which require increased effort to maintain the energy levels necessary for maintenance
and reproduction in Lagothrix. |
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Keywords: | Lagothrix lagotricha time budget activity budget |
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