caa a22 4500 465782787 CHVBK 20180323111959.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF00164006 doi (NATIONALLICENCE)springer-10.1007/BF00164006 Costs and benefits of home range shifts among vervet monkeys ( Cercopithecus aethiops ) in Amboseli National Park, Kenya [Elektronische Daten] [Lynne Isbell, Dorothy Cheney, Robert Seyfarth] Summary: A decline in the density of trees and the deterioration of the habitat of vervet monkeys (Cercopithecus aethiops) in Amboseli National Park, Kenya, have been accompanied by movement of vervet groups into unfamiliar areas. These home range shifts were documented over a period of 26 months. The largest group moved into the home ranges of neighboring groups and acquired more trees, a resource that had become more limited. The groups whose home ranges were encroached upon did not share their home ranges with the intruders, but instead moved into areas that were unoccupied and had a lower density of trees. The largest group was thus more successful than smaller groups in competition for limited resources. For all but one group, movement into new areas was directly associated with the disappearances of female and immature monkeys. Most of the disappearances were attributable to predation. These results suggest that the cost of predation in unfamiliar areas may contribute to the evolution of philopatry in vervets. However, under unstable conditions, resource competition forces these animals to disperse (in groups) despite the high risk of predation. Springer-Verlag, 1990 Isbell Lynne Animal Behavior Group, Department of Anthropology, University of California, 95616, Davis, CA, USA aut Cheney Dorothy Department of Anthropology, University of Pennsylvania, 19104, Philadelphia, PA, USA aut Seyfarth Robert Department of Psychology, University of Pennsylvania, 19104, Philadelphia, PA, USA aut Behavioral Ecology and Sociobiology Springer-Verlag 27/5(1990-09-01), 351-358 0340-5443 27:5<351 1990 27 265 https://doi.org/10.1007/BF00164006 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00164006 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Isbell Lynne Animal Behavior Group, Department of Anthropology, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 700 1- Cheney Dorothy Department of Anthropology, University of Pennsylvania, 19104, Philadelphia, PA, USA aut NATIONALLICENCE 700 1- Seyfarth Robert Department of Psychology, University of Pennsylvania, 19104, Philadelphia, PA, USA aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 27/5(1990-09-01), 351-358 0340-5443 27:5<351 1990 27 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer