期刊
JOURNAL OF TROPICAL ECOLOGY
卷 24, 期 -, 页码 367-374出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0266467408005129
关键词
agouti; Dasyprocta punctata; habitat use; home range; mammal density; predation risk; space use
类别
This study investigates the movements and home range of the agouti (Dasyprocta punctata) on Barro Colorado Island, Panama. We captured and tracked 12 agoutis from January to December 2003. Home-range size (95% kernel) ranged from 1.56-2.45 ha (n = 6) for males and 1.34-1.97 ha (n = 5) for females. Agouti ranges overlapped and we estimated a density of approximately 1.00 agoutis km(-2). We compared agouti movement with the locations of refuges and food trees, and the results suggest that the agoutis are central-place foragers. Agoutis moved an average of 8 50 m d(-1) covering approximately 35% of their range daily. These movement data help us understand the potential impacts of agoutis as seed dispersers, predicting that D. punctata will encounter and hoard fallen fruit within 10-200 m (i.e. radius of home range) of its source, and move seeds towards refuges such as ground holes and dense vegetation around recent tree falls.
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