A comparative analysis of sphenoid bone between domestic sheep (ovis aries) and goat (capra hircus) using geometric morphometrics |
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Authors: | Pere M Parés-Casanova Xènia Domènech-Domènech |
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Institution: | Department of Animal Science, ETSEA, University of Lleida, Lleida, Spain |
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Abstract: | The sphenoid bone forms the rostral part of the base of the neurocranium and is composed of two segments, the presphenoid os praesphenoidale] and the basisphenoid os basisphenoidale]. Rarely studied in osteology, we tested whether it can provide distinctive features between domestic sheep (Ovis aries L., 1758) and goat (Capra hircus L., 1758). For this goal, we studied a sample comprised by 53 dry modern skulls of adult sheep (n = 36) and goat (n = 17) subjects from a modern comparative collection by means of geometric morphometric techniques using a total of 26 anatomical points (2 saggital landmarks and 24 semilandmarks). Results showed that form (size + shape) differences appear between both species: sphenoid among sheep tends to be bigger, longer and wider than in goats, differences of width being mainly located on basisphenoid width. |
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Keywords: | basisphenoid neurocranium palatine morphology presphenoid small ruminants’ skull |
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