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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

MORALES-MUNOZ, Pamela; ARRIAGADA-VALDES, Catalina  and  SANCHEZ-ONATE, Jorge. Morphological and Morphometric Description of Thoracic Limb Intrinsic Myology in a Specimen of Pudu (Pudu puda). Int. J. Morphol. [online]. 2020, vol.38, n.1, pp.91-95. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022020000100091.

The pudú (Pudu puda) is classified as an artiodactyl and is the smallest deer of the Cervidae family. It is estimated that its population has been reduced for a number of reasons, such as loss of forests, predation and hunting. The objective of this study is to describe the intrinsic musculature of the thoracic limb of a Pudu specimen, comparing the results with those described for domestic ruminants in anatomical literature. Musculature was studied from proximal to distal, dividing the limb into four topographic regions: scapular, brachial, antebrachial and hand regions. In addition, a morphometric study was conducted indicating the length, width and thickness of the muscles. The results indicate that the Pudu species has anatomical characteristics similar to those of domestic ruminants. However, some differences should be considered, such as the scapular portion of M. deltoides joins aponeurotically with M. infraspinatus; the two heads of M. carpis ulnaris are highly fused; the third tendon of M. biceps brachii; the M. triceps brachii is well developed and has four distinct muscle heads; the M. Anconeus remains independent of the lateral head of M. triceps brachii; the M. digitorum profundus features four heads and the M. interosseous is macroscopically tendinous. The information provided in this study corresponds to an anatomical contribution that allows furthering scientific knowledge of this protected and vulnerable species, which is scarcely studied.

Keywords : Description; Myology; Thoracic limb; Pudu.

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