New morphological aspects of the hyoid apparatus of the giant anteater (Myrmecophaga tridactyla) living in a human-wildlife interface in the Atlantic Forest biome, Brazil
DOI:
https://doi.org/10.31533/pubvet.v17n11e1490Keywords:
Bone, giant anteater, larynx, morphologyAbstract
The aim of this study was to identify the anatomical structures in the cervical region of the giant anteater (Myrmecophaga tridactyla). For this, three adult female giant anteater corpses (head/neck) were used. The digital radiography analysis was performed in the sagittal direction. Subsequently, the heads of these animals were anatomically sectioned in anatomical sagittal plane. Radiography images were compared with anatomical sections. The association between digital radiography and anatomical sections allowed the visualization of anatomical structures found in the pharyngeal cavity. The new structure, never described before, was found and its topography revealed a close relation to the pharynx/larynx area. The findings of this study suggest that the giant anteater has structures morphologically adapted to its feeding habits, such as an elongated skull, tongue, styloid bones, mandible and a new structure serving as a feed reservoir connected directly to the esophagus (cervical part) described here. In addition, it was possible to establish anatomical parameters as an important tool for the veterinary routine of wild animals, since they allow for the precise identification of anatomical structures.
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