Morphological features of lower respiratory tract of nine‐banded armadillo (Dasypus novemcinctus, Linnaeus, 1758)

The nine‐banded armadillo (Dasypus novemcinctus) is a mammal of the Xenarthra Superorder, which inhabits Central, South and North America. Few morphological descriptions are observed in this species, including the respiratory tract; therefore, the objective of this study was to describe morphologica...

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Bibliographic Details
Published in:Anatomia, histologia, embryologia histologia, embryologia, 2021-03, Vol.50 (2), p.234-239
Main Authors: Araújo, João Victor Silva, Barros, Gabriel Martins, Cavalcante, Maria Michele Araújo de Sousa, Silva, Andrezza Braga Soares da, Monção, Élida da Costa, Mendonça, Tarsia Giabardo Silva, Mendes Júnior, Aírton Conde
Format: Article
Language:English
Subjects:
Acetic acid
armadillos
Bronchus
Cartilage
cingulata
Dasypus novemcinctus
Epithelium
Goblet cells
Light microscopy
lung
Morphology
Perfusion
Respiratory organs
Respiratory tract
Species
Trachea
trachea respiratory system
Vinyl acetate
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Summary:The nine‐banded armadillo (Dasypus novemcinctus) is a mammal of the Xenarthra Superorder, which inhabits Central, South and North America. Few morphological descriptions are observed in this species, including the respiratory tract; therefore, the objective of this study was to describe morphologically the lower respiratory tract of the nine‐banded armadillo. Five animals were dissected, and the macroscopic and microscopic aspects were analysed. In the anatomical analysis, the perfusion technique was performed with vinyl acetate and the fragments of tissue from respiratory organs (trachea, bronchi, bronchioles and pulmonary lobes) were stained with haematoxylin–eosin for visualization under optical microscopy. Containing about 30 cartilage rings, the trachea is lined internally with ciliated pseudostratified epithelial tissue. The lungs are subdivided into lobes by deep interlobar fissures, with two lobes in the right lung and three lobes in the left lung. Microscopically, the primary, secondary and tertiary bronchi have non‐ciliated pseudostratified epithelium with goblet cells. It was found that macro‐ and microscopically the respiratory tract of this species is similar to existing xenarthras and other excavator animals. These data provide subsidies for the clinic and preservation of this species.
ISSN:0340-2096
1439-0264
DOI:10.1111/ahe.12620