Author:
Urbani Bernardo,Youlatos Dionisios,Kowalewski Martín M.
Abstract
Abstract. Sleep is the longest and most continuous behavioral phase in the
24 h cycle of mammals. However, selection of postures, substrates, and tree
parts during sleep has not been adequately explored, as well as their
evolutionary consequences. The present study investigates postural behavior,
substrate, and tree part use during sleep in three howler species (A. palliata, A. macconnelli, and
A. caraya) in Nicaragua, French Guiana, and Argentina. All three species were
consistent in the use of a crouched ball-like sit-in posture on large,
horizontal, unramified, or bifurcated substrates, and in avoiding the
periphery of tree crowns. The regularities of these sleeping patterns are
very likely functionally associated with protection from potential predators
and extreme weather conditions, biomechanical stability, thermoregulation,
and enhancement of the digestive process of hard-to-decompose plant
material.
Subject
Animal Science and Zoology
Reference68 articles.
1. Anderson, J. R.: Ethology and ecology of sleep in monkeys and apes, Adv.
Stud. Behav., 14, 165–229, 1984.
2. Anderson, J. R.: Sleep, sleeping sites, and sleep-related activities:
Awakening to their significance, Am. J. Primatol., 46, 63–75, 1998.
3. Anderson, J. R.: Sleep-related behavioural adaptations in free-ranging
anthropoid primates, Sleep Med. Rev., 4, 355–373, 2000.
4. Anderson, J. R. and McGrew, W. C.: Guinea baboons (Papio papio) at a sleeping site, Am. J. Primatol., 6, 1–14, 1984.
5. Bergeson, D. J.: The positional behavior and prehensile tail use of
Alouatta palliata, Ateles geoffroyi, and Cebus capucinus, PhD thesis, Washington University, Saint Louis, 1996.
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