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Year 2014 - Volume 34, Number 6
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Morphology of the larynx of agouti (Dasyprocta sp.), 34(6):593-598
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ABSTRACT.- Silva A.B.S., Santos T.M.V., Carvalho M.A.M., Guerra P.S.L. Rizzo M.S., Araújo W.R., Torres C.B.B. & Conde-Junior A.M. 2014. [Morphology of the larynx of agouti.] Morfologia da laringe da cutia (Dasyprocta sp.). Pesquisa Veterinária Brasileira 34(6):593-598. Setor de Histologia e Embriologia, Universidade Federal do Piaui, Campus Universitário Ministro Petrônio Portella, Bairro Ininga, Teresina, PI 64049-550, Brazil. E-mail: andrezzab1@hotmail.com
The agouti (Dasyprocta sp.) is a wild rodent with worldwide distribution. Besides its ecological role, agouti is used as a model in animal experimentation. Studies on the morphology of agouti are important because they can be an alternative for the study of various pathological processes and contribute to the preservation of the species. The larynx, located between the pharynx and trachea, is involved in the functions of breathing, swallowing and speech. This study aimed to perform a macroscopic and microscopic morphology of the larynx of agouti. To this end, we used fifteen agoutis belonging to the Centre of Agricultural Sciences, Federal University of Piauí, and from the Center for Study and Preservation of Wild Animals with license of IBAMA (No. 02/08-618, CTF No. 474064). All animals were identified according to their gender, the larynx was dissected and cartilaginous fragments were sent for routine histology and stained with hematoxylin-eosin. The slides obtained were viewed in light microscopy and photo documented. The larynx of agouti has five cartilages, without the cuneiform cartilage but presence of the thyroid cartilage notch. The epithelial tissue of the larynx varies from stratified squamous epithelium to keratinized and non-keratinized ciliated caliciforme cells. |
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