Anatomical study of the pineal gland in capybara (Hydrochoerus hydrochoeris)

Authors

  • Erika Renata Branco Conselho Nacional de Pesquisa e Desenvolvimento, Brasília, DF
  • Ademir Guimarães Conselho Nacional de Pesquisa e Desenvolvimento, Brasília, DF
  • Maria Angélica Miglino Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Cirurgia, São Paulo, SP
  • Liberato J.A. Didio Universidade de Santo Amaro, São Paulo, SP
  • Rodolfo Nurmberger Jr. Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Patologia, São Paulo, SP
  • Wilson Machado de Souza Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, SP

DOI:

https://doi.org/10.11606/issn.2318-3659.v34i4p191-195

Keywords:

Pineal body, Capybaras, Hidrochaerus.

Abstract

The pineal gland was studied macro-and microscopically in 19 adult and young capybaras (Hydrochoerus hydrochoeris) 13 females and 6 males. Pineal gland was present in all specimens between the cerebrum and the cerebellum and was formed by a base with two peduncles, a stem and an apex. The gland was in the roof of the III ventricle, next to the rostral coliculi, either
whish or brownish.The apex contained a cavity. Pineal gland was 2.2 cm long, and dimensions of the base, stem and apex were 1.3 mm, 1.2 mm and 2.0 mm respectively. The connective tissue capsule at least in part, contained blood vessels. Pineal parenchyma exhibited pinealocytes, with nuclear and interstitial cells.

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Published

1997-08-01

Issue

Vol. 34 No. 4 (1997)

Section

BASIC SCIENCES

License

The journal content is authorized under the Creative Commons  BY-NC-SA  license (summary of the license: https://creativecommons.org/licenses/by-nc-sa/4.0 | full text of the license: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) 

How to Cite

1.
Branco ER, Guimarães A, Miglino MA, Didio LJ, Nurmberger Jr. R, Souza WM de. Anatomical study of the pineal gland in capybara (Hydrochoerus hydrochoeris). Braz. J. Vet. Res. Anim. Sci. [Internet]. 1997 Aug. 1 [cited 2026 Oct. 16];34(4):191-5. Available from: https://revistas.usp.br/bjvras/article/view/50292