Primate Biology
Primate Biology
Primate Biology
Articles | Volume 7, issue 2
Articles | Volume 7, issue 2
https://doi.org/10.5194/pb-7-25-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/pb-7-25-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 2
Research article
 | 
01 Oct 2020
Research article |  | 01 Oct 2020

Postural behavior of howler monkeys (Alouatta palliata, A. macconnelli, and A. caraya) during sleep: an assessment across the genus range

Bernardo Urbani, Dionisios Youlatos, and Martín M. Kowalewski

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Short summary
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 crouch.
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