Abstract # 104:

Scheduled for Friday, August 19, 2005 11:15 AM-11:30 AM: Session 7 (Parliament Room) Oral Presentation


SLEEPING SITE SELECTION IN THE GOLDEN LION TAMARIN, Leontopithecus rosalia

S. J. Hankerson and J. M. Dietz
University of Maryland, Department of Biology, College Park, MD 20742, USA
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     Choice of sleeping location may depend on several factors including safety from predators and proximity to feeding locations. The type and location of sleeping sites may help to clarify their function. In this study we examine the selection of sleeping sites for six groups of golden lion tamarins in Poço das Antas Reserve, Brazil. Forest and tree characteristics of frequently-used sleeping sites were compared to random locations within the home ranges of the groups using a logistic regression. Forest structure, not the characteristics of individual trees predicted sleeping versus random sites (?2 = 65.04, P < 0.001). The forest surrounding sleeping sites had significantly more lianas (?2 = 10.93, P < 0.001) and a less dense canopy cover (?2= 21.74, P < 0.001). Sleeping trees were significantly closer to large trees than random sites (?2 = 6.89, P = 0.009) and were found at significantly higher altitudes (?2 = 13.56, P < 0.001). These results suggest that lion tamarins are selecting sleeping sites in remnants of relatively mature forest rather than following a “search image” for trees that provide safety from nocturnal predators.