Morphology and Morphometry of the Magellanic Penguin (Spheniscus magellanicus) Trachea

Objective: This work aimed to describe the trachea of Magellanic Penguin (Spheniscus magellanicus) through descriptive and morphometric approaches. Methods: ten adult male Spheniscus magellanicus were used, which collected, fixed, kept immersed in an aqueous solution 10% formaldehyde. Results: penguin began caudally from cricoid cartilage larynx, represented by 121.3±5.65 cartilaginous rings joined together, extended syrinx (19.75±0.70 cm). Considering its five segments (I-V), number tracheal decreased a cranio-caudal direction. The medial septum, started was approximately 2±0.08 cm formed 6.75±0.25 rings. dimensions lumen cranio-caudally, with statistical difference between segment I others (II V). tracheobronchial type presented 7.52±0.65 Conclusions: these data will contribute understanding anatomy this species, as well diagnosis treatment possible pathologies found it.