Size asymmetries in equine upper molar series
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Size morphological symrnetry and asymmetry of complete horse molar series (n=16) belonging to 'Cavall Pirinenc Catala' (Pyreriean horse) were decomposed using geometric morphometric methods. Fluctuating asymmetry (FA) was used as an indicator of environmental stress, and directional asymmetry (DA) as biomechanical constrains. Two-dimensional coordinates of 18 occlusal landmarks were digitized and analyzed using multivariate analyses which showed the presence of significant DA as well as FA. Stressors such as extreme temperatures, lack of dental care and parasites could explain the significative FA whereas DA could be explained by a lateralization in masticatory process, a preference for one side of the dentition during chewing, as has been described in humans.
Is part ofECORFAN Journal, 2014, vol. 5, núm. 13, p. 2138-2145
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Parés Casanova, Pere-Miquel; Morros, Carla (Medlife Scientific Press, 2014)Deviations from expected perfect symmetry can occur, and organisms can develop several kinds of asymmetry. Among others are fluctuating asymmetry (FA) and directional asymmetry (DA). FA represents small random differences ...
Parés Casanova, Pere-Miquel (Agricultural Academy of Bulgaria, 2020-05-30)Deviations from expected perfect symmetry on biological forms can occur, and organisms develop several kinds of asymmetries. Among others there are fluctuating asymmetry and directional asymmetry (DA). DA happens whenever ...
Multivariant numerical analysis with equine mandibular metric parameters in the Cavall Pirinenc Català breed. Parés Casanova, Pere-Miquel (Veterinaria Organización, 2010)Nine metric parameters were taken on 16 mandibles from adult horses belonging to the Cavall Pirinenc Català breed. Based on these parameters, we develop a descriptive and normality statistics and we obtain correlation ...