Pitheciine Action Group
Pitheciines: Comparing use of Time and Space
Setz, E.Z., L.P. Pinto, M. Bowler, J. Vié & A.A. Barnett
Pitheciin monkeys vary widely in their use of time and space. Pithecia live
in groups of 3-8 individuals and have home ranges upwards to 280ha,
traveling 500 to 2800m a day. They show shorter activity periods (8 -
10h), retreating to sleep long before sunset (14:40 - 16:20). At one
site, Pithecia traveled farther and faster in the rainy season when fruits
were abundant, without however, changing time budgets. At another
site, travel time was proportional to distance traveled. Cacajao and
Chiropotes are larger than Pithecia and form groups of up to 50
individuals (as many as 200 in Cacajao), which can cover daily distances
of more than 6000m. These large groups frequently split into smaller
units, which may remain apart for many days. Home ranges for
Chiropotes albinasus can be as large as 700ha, and for Cacajao may be
in excess of 1200ha. Although Pithecia pithecia travels in lower forest
strata, it uses the upper strata seasonally. Pithecia albicans, Cacajao
and Chiropotes concentrate their activity in the middle and upper strata
year around. When available, Cacajao uses flooded habitats, foraging
seasonally in lower strata, and at some sites may feed on the ground.
Chiropotes does not seem to vary seasonally in habitat use. Variations in
pitheciin ecology seem consistent with adaptive foraging responses to
the heterogeneity of food resources in time and space.
Return to symposium programme
Setz, E.Z., L.P. Pinto, M. Bowler, J. Vié & A.A. Barnett
Pitheciin monkeys vary widely in their use of time and space. Pithecia live
in groups of 3-8 individuals and have home ranges upwards to 280ha,
traveling 500 to 2800m a day. They show shorter activity periods (8 -
10h), retreating to sleep long before sunset (14:40 - 16:20). At one
site, Pithecia traveled farther and faster in the rainy season when fruits
were abundant, without however, changing time budgets. At another
site, travel time was proportional to distance traveled. Cacajao and
Chiropotes are larger than Pithecia and form groups of up to 50
individuals (as many as 200 in Cacajao), which can cover daily distances
of more than 6000m. These large groups frequently split into smaller
units, which may remain apart for many days. Home ranges for
Chiropotes albinasus can be as large as 700ha, and for Cacajao may be
in excess of 1200ha. Although Pithecia pithecia travels in lower forest
strata, it uses the upper strata seasonally. Pithecia albicans, Cacajao
and Chiropotes concentrate their activity in the middle and upper strata
year around. When available, Cacajao uses flooded habitats, foraging
seasonally in lower strata, and at some sites may feed on the ground.
Chiropotes does not seem to vary seasonally in habitat use. Variations in
pitheciin ecology seem consistent with adaptive foraging responses to
the heterogeneity of food resources in time and space.
Return to symposium programme
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SYMPOSIUM
Pitheciins: Ecology & Conservation
XXI Congress of the International Primatological Society
Pitheciins: Ecology & Conservation
XXI Congress of the International Primatological Society
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