Contract grant sponsor: University of Texas at Austin; Contract grant sponsor: Northwestern University.
Muscle Mass Scaling in Primates: An Energetic and Ecological Perspective
Article first published online: 8 FEB 2012
© 2012 Wiley Periodicals, Inc.
American Journal of Primatology
Volume 74, Issue 5, pages 395–407, May 2012
How to Cite
MUCHLINSKI, M. N., SNODGRASS, J. J. and TERRANOVA, C. J. (2012), Muscle Mass Scaling in Primates: An Energetic and Ecological Perspective. Am. J. Primatol., 74: 395–407. doi: 10.1002/ajp.21990
- Issue published online: 17 APR 2012
- Article first published online: 8 FEB 2012
- Manuscript Accepted: 13 NOV 2011
- Manuscript Revised: 24 OCT 2011
- Manuscript Received: 1 NOV 2010
- University of Texas at Austin
- Northwestern University
- muscle mass;
- body composition;
Body composition is known to vary dramatically among mammals, even in closely related species, yet this issue has never been systematically investigated. Here, we examine differences in muscle mass scaling among mammals, and explore how primate body composition compares to that of nonprimate mammals. We use a literature-based sample of eutherian and metatherian mammals, and combine this with new dissection-based data on muscularity in a variety of strepsirrhine primates and the haplorhine, Tarsius syrichta. Our results indicate an isometric scaling relationship between total muscle mass and total body mass across mammals. However, we documented substantial variation in muscularity in mammals (21–61% of total body mass), which can be seen both within and between taxonomic groups. We also found that primates are under-muscled when compared to other mammals. This difference in body composition may in part reflect the functional consequences of arboreality, as arboreal species have significantly lower levels of muscularity than terrestrial species. Am. J. Primatol. 74:395-407, 2012. © 2012 Wiley Periodicals, Inc.