Anatomia tomográfica do sistema respiratório superior de bugio-preto (Alouatta caraya) : revisão de literatura e relato de caso

Abstract

Alouatta caraya (Humboldt, 1812) is one of the bugio species of the Atelidae family, popularly known as black bug or guariba. This genus has important anatomical variations in the dangerous system in relation to other primates. The use of diagnostic imaging methods such as computed tomography in wild animals has favored good results, both for clinical evaluation of pathology and for research aimed at the study of the morphology of certain species. Thus, the objective of this study was to describe the tomographic aspect of the main anatomical structures of the upper airways of a specimen of A. caraya. To carry out this study, a specimen was anesthetized and subjected to tomographic examination of the skull and neck through the two-channel somatom spirit (Siemens) device. The bugio exhibits a labyrinth of air passages located in the head and neck region, involving bone, cartilaginous and saccular structures, which act in a unique way on the functional performance of the upper injury system, both in breathing and in the expression of social and individual behaviors. The tomographic observations carried out showed part of the anatomy of the protection system similar to other neotropical primates of the same genus described in bibliographic reviews, but some visualized structures are more specific and complex in the species presented. Therefore, the tomographic study was efficient in detailing the morphology of the respiratory tract of the bugio, showing intralaryngeal aerial saccular structures not described by dissection studies, but failed to show the laryngeoyoid communication widely described in these species.