Isometric variation in the brown-throated sloth Bradypus variegatus (Schinz, 1825) mandible

Thumbnail
View/Open
Issue date
2016-04-21
Author
Parés Casanova, Pere-Miquel
Murillo, O.
Suggested citation
Parés Casanova, Pere-Miquel; Murillo, O.; . (2016) . Isometric variation in the brown-throated sloth Bradypus variegatus (Schinz, 1825) mandible. Journal of Scientific Research in Allied Sciences, 2016, vol. 2, núm. 2, p. 37-45. http://hdl.handle.net/10459.1/59972.
Impact

Google Scholar logo  Google Scholar
Share
Export to Mendeley
Metadata
Show full item record
Abstract
Several studies have shown unique morphological traits of sloths, affecting varied phenotypic traits from skeletal parts to soft tissues. Here we present the first descriptive allometric pattern of mandible form among the brown-throated sloth Bradypus variegatus (Schinz, 1825), based on the study of
25 specimens by means of geometric morphometric methods. The results obtained indicate that the species has a non-allometric slope, and therefore shape variation could hardly be explained by size. An established 'lever index', which can characterize the mandibular mechanical advantage, was maintained independently of the mandibular size. This non-geometric scaling of jaw form in sloth represents another uniqueness of this animal taxon.
URI
http://hdl.handle.net/10459.1/59972
Is part of
Journal of Scientific Research in Allied Sciences, 2016, vol. 2, núm. 2, p. 37-45
Collections