Histological analysis of the eyeball of Neotropical birds of prey Caracara plancus, Falco sparverius, Rupornis magnirostris, Megascops choliba and Athene cunicularia

  • Débora Galdino Pinto Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia http://orcid.org/0000-0002-4379-7801
  • Guilherme Durante Cruz Universidade de Santo Amaro
  • Rodrigo Hidalgo Friciello Teixeira Parque Zoológico Municipal Quinzinho de Barros
  • Erica Pereira Couto Tukan - Consultório de Animais Silvestres
  • Marcelo Pires Nogueira de Carvalho Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia
Keywords: Birds, eyeball, histology

Abstract

The growing use of ophthalmic examination as a screening tool in birds intended for reintroduction into natural environments over the last few years has given renewed significance to avian ophthalmology in the context of free-ranging and captive bird conservation. The eye plays a vital role in prey detection and capture by birds of prey. The remarkable eyesight of such birds makes them interesting subjects for avian visual system anatomical and histological investigation. This study set out to describe histological features of the eyeball of ubiquitous birds of prey in Brazil (Falconiformes, Accipitriformes and Strigiformes). Twenty enucleated cadaveric eyeballs obtained from birds with natural death, Caracara plancus, Falco sparverius, Rupornis magnirostris, Megascops choliba and Athene cunicularia were used. Routinely prepared histological slides stained with hematoxylin and eosin were analyzed under light microscopy. Similarities and variations in ocular structures between the different bird species studied were highlighted in this study, with major differences concerning the lens and retina. This study highlights the importance of determining the ocular histological pattern of the species so they can be better understood. These results may well assign baseline information of the species and assist in eye histopathological diagnostics. 

Downloads

Download data is not yet available.
Published
2016-10-04
How to Cite
Pinto, D., Cruz, G., Teixeira, R., Couto, E., & Carvalho, M. (2016). Histological analysis of the eyeball of Neotropical birds of prey Caracara plancus, Falco sparverius, Rupornis magnirostris, Megascops choliba and Athene cunicularia. Brazilian Journal of Veterinary Research and Animal Science, 53(3), 280-285. https://doi.org/10.11606/issn.1678-4456.bjvras.2016.109045