Role of the prehensile tail during ateline locomotion: experimental and osteological evidence

American Journal of Physical Anthropology
Daniel SchmittPierre Lemelin

Abstract

The dynamic role of the prehensile tail of atelines during locomotion is poorly understood. While some have viewed the tail of Ateles simply as a safety mechanism, others have suggested that the prehensile tail plays an active role by adjusting pendulum length or controlling lateral sway during bimanual suspensory locomotion. This study examines the bony and muscular anatomy of the prehensile tail as well as the kinematics of tail use during tail-assisted brachiation in two primates, Ateles and Lagothrix. These two platyrrhines differ in anatomy and in the frequency and kinematics of suspensory locomotion. Lagothrix is stockier, has shorter forelimbs, and spends more time traveling quadrupedally and less time using bimanual suspensory locomotion than does Ateles. In addition, previous studies showed that Ateles exhibits greater hyperextension of the tail, uses its tail to grip only on alternate handholds, and has a larger abductor caudae medialis muscle compared to Lagothrix. In order to investigate the relationship between anatomy and behavior concerning the prehensile tail, osteological data and kinematic data were collected for Ateles fusciceps and Lagothrix lagothricha. The results demonstrate that Ateles has more numerous ...Continue Reading

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Citations

Jul 6, 2014·Biology Letters·Shawn M O'ConnorJ Maxwell Donelan
May 31, 2011·Journal of Human Evolution·Gabrielle A Russo, Liza J Shapiro
Apr 30, 2009·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Jason M OrganAndrea B Taylor
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Nov 2, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Lauren B Halenar
Nov 2, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Jason M Organ, Pierre Lemelin
Feb 15, 2013·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Biren A PatelJason M Organ
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