Micromorphology of osteoderms in Dasypodidae (Cingulata, Mammalia): Characterization and 3D-reconstructions.

Autor: Scarano AC; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina.; Laboratorio de Morfología Evolutiva y Desarrollo (MORPHOS), Museo de la Plata, Facultad de Ciencias Naturales y Museo, UNLP, La Plata, Argentina.; Universidad Nacional de Avellaneda (UNDAV), Avellaneda, Buenos Aires, Argentina., Ciancio MR; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina.; Laboratorio de Morfología Evolutiva y Desarrollo (MORPHOS), Museo de la Plata, Facultad de Ciencias Naturales y Museo, UNLP, La Plata, Argentina., Barbeito-Andrés J; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina.; ENyS, Estudios en Neurociencias y Sistemas Complejos, CONICET, Hospital El Cruce Dr, 'Néstor C. Kirchner', Universidad Arturo Jauretche, Buenos Aires, Argentina., Barbeito CG; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina.; Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada (LHYEDEC), Facultad de Ciencias Veterinarias, UNLP, La Plata, Provincia de Buenos Aires, Argentina., Krmpotic CM; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina.; Laboratorio de Morfología Evolutiva y Desarrollo (MORPHOS), Museo de la Plata, Facultad de Ciencias Naturales y Museo, UNLP, La Plata, Argentina.
Jazyk: angličtina
Zdroj: Journal of morphology [J Morphol] 2020 Feb; Vol. 281 (2), pp. 258-272. Date of Electronic Publication: 2019 Dec 27.
DOI: 10.1002/jmor.21096
Abstrakt: Osteoderms are present in a variety of extinct and extant vertebrates, but among mammals, the presence of osteoderms is essentially restricted to armadillos (Cingulata, Dasypodidae). Osteoderms have been proposed to exhibit a variety of functionalities in Dasypodidae, mainly protection and thermoregulation, and they have been considered as one of the synapomorphies of this group. In this study, we use high-resolution microcomputed tomography to describe the osteoderm micromorphology of several extant species of Dasypodidae in a comparative context. This study allowed the identification, 3D-reconstruction and volume quantification of different internal structures of osteoderms as well as their interrelations. This detailed characterization of the internal osteoderm morphology was compared in a phylogenetic context to assess the evolutionary trends of the species involved. This enables the identification of distinctive patterns for the most widely recognized clades, the Dasypodinae and Euphractinae with a morphological homogeneity in the microstructure of their osteoderms, in comparison with Tolypeutinae where it has not been possible to establish a common morphological pattern. The most important features for linage differentiation is the degree of compaction of the osteoderms, the number of cavities and the development of hairs. It is likely that the differential development of the various structures occurred as adaptive response to climate changes.
(© 2019 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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