Mañana, JUEVES, 24 DE ABRIL, el sistema se apagará debido a tareas habituales de mantenimiento a partir de las 9 de la mañana. Lamentamos las molestias.
Shape variation and allometry in the precloacal vertebral series of the snake daboia russelli (Viperidae)
Title (trans.)
Variación morfológica y alometría de las vértebras precloacales en el ofidio daboia russelli (viperidae)Entity
UAM. Departamento de BiologíaPublisher
Elsevier B.V.Date
2012-05-14Citation
International Journal of Morphology 30. 4 (2012): 1363-1368ISSN
0717-9367 (print); 0717-9502 (online)Funded by
Funds provided by the project CGL2009-11838 BTE and a FPU grant (AP2007-00904; MICINN) to I. SarrisSubjects
Axial skeleton; Intracolumnar variation; Russells viper; Serial homology; Vertebral morphology; Biología y Biomedicina / BiologíaRights
© Copyright 2013 Elsevier B.V.Abstract
Understanding the variation of the ophidian vertebral morphology is an essential tool in snake paleobiology, but so far this field remains hardly investigated. A major problematic is the still scarce knowledge about the basis of homogeneity of intracolumnar shape variation along the vertebrae of the precloacal region in these animals. For instance, this variation can be overwhelmingly low in cases such as in vipers, for which it seems almost impossible to describe a concrete regionalization of the precloacal region without ambiguity. This study has applied geometric morphometrics to analyze if the shape variation of the vertebrae of the precloacal vertebrae of an adult specimen of Daboia russelli allows differentiating any sort of parcellation within the column of this organism. We have also explored if size is associated with the organization of vertebral shape along the axial skeleton. The multivariate analyses showed that the main pattern of vertebral shape variation in D. russelli concerns the neural spine and the hypapophysis, whereas the shape of the vertebral centrum appears to be nearly invariant along the series. Our analysis also showed that the precloacal region can be sudivided into two portions that merge in a transitional boundary of largest vertebrae in the middle of the column. From this middle region towards the distal ends of the column vertebrae become smaller changing their shapes in two antithetical ways
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Google Scholar:Sarris, Ioannis
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Chamero, Beatriz
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D. Buscalioni, Ángela
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Marugán Lobón, Jesús Carlos
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