Skull asymmetries in wild boar (Sus scrofa LINNAEUS, 1758)
Data de publicació2019-07-03
MetadadesMostra el registre d'unitat complet
Organisms can develop different kinds of asymmetry when deviations from expected perfect symmetry occur. Among others are fluctuating asymmetry (FA) and directional asymmetry (DA). FA represents small random differences between corresponding parts on the left and right sides of an individual in bilaterally paired structures. It is thought that FA reflects an organism's ability to cope with genetic and environmental stress during growth. DA occurs whenever one side on the plane of symmetry develops more than the other side, and has a genetic component. In this research, we examined the expression of morphological symmetry in 38 skulls of different age groups of wild boar (Sus scrofa), on their ventral aspect, using two-dimensional coordinates of 27 landmarks. Analyses showed the presence of significant FA and DA in the entire sample, detecting also distinctive differences between age groups. The obtained results show that the shape differences in different age groups could reasonably be a consequence of a response to environmental factors for FA and a masticatory lateralization for DA.
És part deBrazilian Journal of Veterinary Research and Animal Science, 2019, vol. 56, num. 1, p. 1-7
Projectes de recerca europeus
Aquest document està subjecte a una llicència Creative Commons.cc-by-nc (c) Parés Casanova, P.M., 2019
Mostrant elements relacionats per títol, autor i matèria.
Existence of mandibular directional asymmetry in the European wild boar (Sus scrofa Linnaeus, 1758) Parés Casanova, Pere-Miquel (SBA-Sociedade Brasileira de Anatomia (Brazilian Society of Anatomy); Panamerican Association of Anatomists, 2015-04-27)We studied a sample of 37 dentulous dry mandibles from European wild board (Sus scrofa) and compared both the right and left sides in their dorsal aspect. To study the influence of age, the samples were grouped according ...
Parés Casanova, Pere-Miquel; Bravi, R. (Medlife Scientific Press, 2014-06-22)Morphological symmetry and asymmetry of three different sheep geographical populations (n=39), managed under semi-extensive conditions, were decomposed using geometric morphometric methods, on dorsal aspect of skulls. ...
Parés Casanova, Pere-Miquel; Muñoz, F. A.; Blanco, C.; Cala, D.; Crosby-Granados, René; Salamanca-Carreño, Arcesio (Red CONBIAND, 2018-06-26)Fluctuating asymmetry (FA) is defined as the deviation of an individual from their perfect bilateral symmetry, and is considered a negative indicator in the ability to resist small anomalies in the development. These ...