Abstract
Morphophysiological species researches are fundamental, and diagnostic imaging is an excellent technique, already used in wild animals, with great application, not invasive and provide real-time information of each body. Amazonian manatees are on the list of endangered animals classified in the vulnerable category and knowledge of the normal pattern of ultrasound anatomy of organs and tissues is important for the maintenance and well-being of captive specimens contributing to reintroduction actions. The objective of the study was to standardize the examination technique and describe the ultrasound findings of the liver, gallbladder, stomach, urinary bladder and the subcutaneous tissue of the abdominal region in Trichechus inunguis, in order to contribute with the anatomical and sonographic knowledge and assist in the diagnosis and prognosis diseases. The study used 18 animals to describe the normal sonographic anatomy in the abdominal cavity of the Amazonian manatee. During abdominal scan, it was possible to visualize the features of the liver, gallbladder, stomach, urinary bladder obtained satisfactory results in this study. Therefore, other structures were not primarily identified by the reduced time, lots of fat and gases in intestines of animals.
Highlights
Research on wild animals has increased because of the need for knowledge on species’ biology, anatomy, and physiology (Alves et al, 2007)
The Amazonian manatee (Trichechus inunguis), currently classified as endangered, is the only freshwater siren on the IUCN Red List and is considered vulnerable (Marmontel et al, 2016); as a result, extensive studies on these animal’s life histories have become more common owing to the need for captive breeding of these animals to attempt their reintroduction into the wild
Anatomical studies on T. inunguis are scarce (Colares, 1994), and the morphological characterization of vascular organs and structures mainly refers to T. manatus (Snipes, 1984, Reynolds and Rommel, 1996, Rommel et al, 2001, Rommel and Caplan, 2003), a marine species
Summary
Research on wild animals has increased because of the need for knowledge on species’ biology, anatomy, and physiology (Alves et al, 2007). The Amazonian manatee (Trichechus inunguis), currently classified as endangered, is the only freshwater siren on the IUCN Red List and is considered vulnerable (Marmontel et al, 2016); as a result, extensive studies on these animal’s life histories have become more common owing to the need for captive breeding of these animals to attempt their reintroduction into the wild. Anatomical studies (Moura et al, 2007; Previatto and Posso, 2015) support that morphological information allows us to understand how animals interact with their natural environment or in captivity, thereby being able to use it in favor of the preservation of the species. Anatomical studies on T. inunguis are scarce (Colares, 1994), and the morphological characterization of vascular organs and structures mainly refers to T. manatus (Snipes, 1984, Reynolds and Rommel, 1996, Rommel et al, 2001, Rommel and Caplan, 2003), a marine species
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