Isometric variation in the brown-throated sloth Bradypus variegatus (Schinz, 1825) mandible
Data de publicació2016-04-21
MetadadesMostra el registre d'unitat complet
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.
És part deJournal of Scientific Research in Allied Sciences, 2016, vol. 2, núm. 2, p. 37-45
Projectes de recerca europeus
Mostrant elements relacionats per títol, autor i matèria.
Parés Casanova, Pere-Miquel (SBA-Sociedade Brasileira de Anatomia (Brazilian Society of Anatomy); Panamerican Association of Anatomists, 2013-12-07)Morphological differences among 75 specimens of domestic sheep were investigated using landmark-based geometric morphometrics of the lateral aspect of the left hemimandible. The set was grouped at different ages according ...
Non-allometric variation in the Brown-Thorated sloth Bradypus variegatus (Schinz, 1825) skull (Mammalia, Pilosa, Bradypodidade) Parés Casanova, Pere-Miquel (Consejo Superior de Investigaciones Científicas (CSIC), 2019-08-21)Brown-throated sloth Bradypus variegatus (Schinz, 1825) is a monomorphic mammal, and its skull ontogeny is poorly known. Here, we present a study of the ontogenetic allometric relationship between skull size and shape in ...
Parés Casanova, Pere-Miquel; Esteve-Puig, C. (Annals of Experimental Biology, 2015-04-11)Morphological symmetry and asymmetry in a sample of 41 domestic pig skulls was decomposed into a component of symmetric and asymmetric variation using geometric morphometric methods. The left<br>right symmetric variation ...