caa a22 4500 465781934 CHVBK 20180323111957.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF00170902 doi (NATIONALLICENCE)springer-10.1007/BF00170902 Prey selectivity by crowned hawk-eagles on monkeys in the Kibale Forest, Uganda [Elektronische Daten] [Thomas Struhsaker, Meave Leakey] Summary: Results are presented from a 3.25-year study of a nesting pair of crowned hawk-eagles and an 18-year study of a primate community in the Kibale Forest, Uganda. The proportional composition of the living population of prey species was compared with that of eagle prey and animals dying from other causes. Monkeys were the predominant pry (83.7%). They also dominated the medium-to large-sized mammalian carcasses dying from other causes (88.9%). The eagles selected prey according to species, age, and sex. Selectivity by age and sex differed between prey species. Among red colobus monkeys, the eagles selected young juveniles and infants, but in four other monkey species they selected adult males. Eagle prey selectivity by species generally supports the hypothesis that polyspecific associations among the monkeys are effective deterrents against predation. The prey/predator ratio for the Kibale eagles was much higher, but the annual offtake of prey by the eagles was much lower than that of tropical felids. Mortality due to causes other than eagles was greater than expected in red colobus and less in redtails, but not significantly different from expected or equivocal in the other three monkey species. Other cause of mortality affected adult male and infant red colobus more than expected. Among the other four monkey species, significantly more adult males and fewer adult females died from these other causes than expected. Eagle predation had a major impact on the populations of adult males of both black and white colobus and blue monkeys and on both adult male and female mangabeys. The selectivity appeared to contribute significantly to the differential adult sex ratio in four monkey species, but not in red colobus. In contrast, mortality incurred during fighting among adult males probably accounted for the differential adult sex ratio in red colobus. Springer-Verlag, 1990 Struhsaker Thomas Wildlife Conservation International, New York Zoological Society, USA aut Leakey Meave National Museums of Kenya, POB 40658, Nairobi, Kenya aut Behavioral Ecology and Sociobiology Springer-Verlag 26/6(1990-06-01), 435-443 0340-5443 26:6<435 1990 26 265 https://doi.org/10.1007/BF00170902 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00170902 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Struhsaker Thomas Wildlife Conservation International, New York Zoological Society, USA aut NATIONALLICENCE 700 1- Leakey Meave National Museums of Kenya, POB 40658, Nairobi, Kenya aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 26/6(1990-06-01), 435-443 0340-5443 26:6<435 1990 26 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer