Anatomy of the nasal cavity of nine-banded armadillo (Dasypus novemcinctus, Linnaeus, 1758)

Abstract

Nine-banded armadillo (Dasypus novemcinctus) stands out for its adaptability in different environments, a fact that requires the species, an olfactory capacity developed with a keen sense and related organs potentially evolved. Five specimens of nine banded armadillo were submitted to anatomic dissection with occipital disconnection and isolation of part of the skull in order to obtain a hemi-skull to view the arrangement of internal structures of the nasal cavity. The obtained specimens were identified and photographed with the assist of digital camera. The nine-banded armadillo nose is incorporated into the face of the skeleton located in nasal plan with the triangular shape and facing forward. The nostrils are separated by the nasal septum. Paranasal sinuses, two (frontal and parietal), resemble diverticula of the nasal cavity. The nine-banded armadillo nasal shells are presented divided into three: the ethmoid shell, the dorsal nasal shell and the ventral nasal shell. The shells are delimited dorsal and ventral nasal meatus by. The respiratory system of nine-banded armadillo presented features anatomical that justify their behavior in the nature, as their olfactory ability for hunting. Thus, the development of the nasal shell, especially, ethmoid shells check the animal facility in the searching for subterranean food https://doi.galoa.com.br/doi/10.17648/jibi-2448-0002-1-1-4013

Morphology of laryngeal cartilage of the nine‐banded armadillo (Dasypus novemcinctus) Linnaeus, 1758

“…They have a predilection for nocturnal habits and build subterranean burrows in search of food and protection. Studies carried out on the nervous and respiratory systems of the nine‐banded armadillo highlighted that they have a developed olfactory area (Silva et al, ; Silva, Filho, & Bagagli, ). Among the systems, little explored in these animals is the respiratory system, which comprises a set of organs that are interconnected by means of tubes, providing the gas exchange between the internal environment and the external environment.…”

Fauna Helmíntica De Aves

“…Os pseudoparasitos, são parasitos com características semelhantes à dos helmintos, geralmente apresentando falso celoma. Comumente, a transmissão é associada aos hábitos alimentares desses indivíduos, a exemplo da ingestão de anelídeos (SILVA et al, 2015). Além disso, a transmissão pode ocorrer via difusão horizontal, entre o contato de uma ave infectada e uma sadia, pela ingestão de um hospedeiro intermediário, bem como, pela ingestão de ovos de parasitos, por meio de alimentos e água contaminados (BOWMAN et al, 2010).…”

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

“…The morphological peculiarities in the cartilages that make up the larynx (Fonseca et al, 2017), nasal cavity (Silva, Cavalcante, Araújo, et al, 2015) and central nervous system (Araújo et al, 2015) were previously described by our research group, emphasizing the importance of continuing research with this animal, for its use in clinical investigations, besides to critical implications for biodiversity conservation policies for this species (Silva, Cavalcante, Araújo, et al, 2015). In this scenario, the purpose of this proposal was to perform a morphological analysis of the lower respiratory tract of the nine-banded armadillo.…”