Descriptive anatomy of the bony orbit of tropical-sreech-owl (Megascops choliba)

• Autor(a) principal: Moraes, Julia Vulpini de
• Data de Publicação: 2024
• Outros Autores: Perlin, Ketlyn Christine Bonatto, Frigo, Christopher, Silva, Luana Celia Stunitz da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Medicina Veterinária (Recife. Online)
• Texto Completo: https://www.journals.ufrpe.br/index.php/medicinaveterinaria/article/view/6171
• topic: birds; animal morphology; eye; osteology; strigiform; aves; morfologia animal; olho; osteologia; Strigiformes

The cranial anatomical particularities of birds are fundamental to understanding the phylogenetic aspects, contributing to the identification of species and understanding of the animal's life habits. Regarding the veterinary clinical context, knowledge of the cranial region becomes even more essential in the more accurate care of these animals, especially in the analysis and reliable interpretation of image exams. Thus, the objective of the present research was to macroscopically describe the bone orbit and the bone accidents in the tropical-sreech-owl (Megascops choliba), using 15 adult specimens, undetermined sexes arising from natural deaths from the Veterinary Hospital of the Federal University of Paraná-Palotina Sector. All animals were dissected for their skulls to be macerated in water. Subsequently, these were immersed in a hydrogen peroxide solution and exposed to the sun. For analysis and description, a circular magnifying glass with cold light and an unarmed eye was used. Thus, it was observed that the orbit was elongated in the rostrocaudal direction with the presence of short supraorbital prominence, wide postorbital process, incomplete suborbital arch, and thin interorbital septum with several foramina, in which the most significant proportion was the foramen of the optic nerve. Thus, based on the analyzes carried out, a more detailed description is provided with new contributions to the descriptive anatomy of the bone orbit of the native species of owl, M. choliba, in which the need to understand more assertively the uniqueness of the anatomy of the bone orbit between different avian species and their comparative anatomy stands out.