RANIERY JOSE FERNANDES

AUTHOR:  RANIERY JOSE FERNANDES
TITLE: Anatomy of the airways of Alouatta belzebul

ADIVISOR:  Prof. Dr. KLEBER FERNANDO PEREIRA
DEFENSE DATE: 04/22/2019

ABSTRACT

Alouatta belzebul is a mongoose of the new world, a monkey of the family Atelidae and genus Alouatta, popularly known as red-headed guariba or red-footed booby. It is endemic in Brazil and has a separate geographic distribution, occurring in two populations: in the Amazon and another in the Atlantic Forest of the Northeast of Brazil. The anatomy of this genus presents anatomical variations between primates, such as laryngeal development, and presence of an accessory lobe in the right lung. These variations occur mainly due to behavioral factors, food defense and territory. The purpose of this study was to establish comparative data on structures of the respiratory system with that of other primates, mammals, including man. Seven male specimens of Alouatta belzebul were used for the study. The animals were assigned by the Fauna - Belo Horizonte UHE Project. The previously cryopreserved 07 (seven) animals were thawed in running water and then fixed by intramuscular and intracavitary infusion of aqueous 10% formalin solution and infused with latex for observation of arteries and veins. This project was submitted and approved by the Committee on Ethics in Animal Experimentation - CEUA-PRPI-UFG, governed by protocol no. 083/17. In the larynx, the presence of musculature, membranes and ligaments was observed, in consonance with the structures observed in human primates and a very evident hioid bone, probably related to their function in vocalization. The trachea of the Alouatta belzebul consists of 11 to 12 incomplete cartilaginous rings. In the pulmonary structures, a fourth lobe was observed in the right and left lungs, presenting only two wolves, which resembled other non-human primates, such as white tufted tamarins (Callithrix jacchus) and prey monkeys (Sapajus libidinosus), domestic mammals such as canids and felines and wild mammals such as Jaguatirica (Leopardus Pardalis) and fox (Cerdocyon thous). The study contributed to the discussion on evolutionary aspects of the respiratory system and to the clinical and / or surgical performance of the veterinarian.