Anatomy of the Respiratory System and Heart of the Sloth (Choloepus hoffmanni) of Costa Rica
DOI:
https://doi.org/10.15359/rcv.39-1.2Keywords:
anatomy, Choloepus hoffmanni, heart, respiratory systemAbstract
The two-toed sloth (Choloepus hoffmanni) faces various diseases related to the respiratory and circulatory system. Thus, prior knowledge of anatomy becomes relevant since it contributes to the study and interpretation of medical images and surgical procedures. This study aims to describe the topographic and macroscopic anatomy of the heart and the respiratory system. Three animals were preserved with a supersaturated saline solution. Throughout the dissection, it was possible to identify and describe the components of the respiratory system and the heart. Some of the particularities found were the division of the frontal sinus in several sections. In addition, the presence of a large thyroid cartilage and the absence of wedge-shaped processes in the epiglottis were observed. The heart was small, although with very prominent auricles. These findings should be considered in the performance of clinical-surgical procedures and in the interpretation of medical images.
References
Albuquerque, P.V., Sena, D.G.F., Braz, R.S., Mesquit, E.P., Lacerda, M.A.S., Silva, W.J., Sá, F.B. & Amorim, M.J.A.A.L. (2018). Ramos do arco aórtico e da aorta torácica em bicho-preguiça (Bradypus variegatus). Arq. Bras. Med. Vet. Zootec. 70(4), 1203–1211. https://doi.org/10.1590/1678-4162-9963
Blanco, R.E. & Jones, W.W. (2014). Estimation of hearing capabilities of Early Miocene sloths (Mammalia, Xenarthra, Folivora) and palaeobiological implications. Hist Biol 28(3), 390-397. https://doi.org/10.1080/08912963.2014.946415
Britton, S. W. (1941). Form and function in the sloth. Q Rev Biol 16(1), 13-34.
Chetboul, V., Gouni, V., Tissier, R., Jiménez, M., Huynh, M., Pouchelon, J.L. & Chai, N. (2017). Feasibility, Within-Day and Between-Day Variability of Transthoracic Echocardiography in Sloths (Bradypus variegatus and Choloepus hoffmanni). J Vet Sci Med Diagn. 6(5), 4. https://doi.org/10.4172/2325-9590.1000245
Dünner, C. & Pastor, G. (2017). Manual de manejo, medicina y rehabilitación de perezosos. Fundación Huálamo, Chile. p. 154.
Gilmore, D.P., Da Costa, C.P. & Duarte, D.P. (2001). Sloth biology: an update on their physiological ecology, behavior, and role as vectors of arthropods and arboviruses. Braz J. Med Biol Res 34(1), 9-25. https://doi.org/10.1590/s0100-879x2001000100002
Hammond, E. E., Sosa, D., Beckerman, R. & Aguilar, R. F. (2009). Respiratory Disease Associated with Bordetella bronchiseptica in a Hoffmann’s Two-Toed Sloth (Choloepus hoffmanni). J Zoo Wildl Med 40(2), 369-372. https://doi.org/10.1638/2008-0086.1
Hayssen, V. (2011). Choloepus hoffmanni (Pilosa: Megalonychidae). J Mammal 43(873): 37-55. https://doi.org/10.1644/873.1
Ibargoyen, G.S. (2015). Cambios Post Mortem Generales. http://www.produccion-animal.com.ar/veterinaria_forense/15-cambiospm.pdf (Accessed February 23, 2021).
Irving, L., Scholander, P. & Grinnel, S. (1942). Experimental studies of the respiration of sloths. J Cell Comp Physiol 20(2), 183-210. https://doi.org/10.1002/jcp.1030200207
König, H.E. & Liebich, H.G. (2020). Veterinary Anatomy of Domestic Mammals: Textbook and Colour Atlas (7th Edition). Thieme, New York. p. 397-418, 471-500.
Lescano, J., Quevedo, M., Baselly, C. & Fernández, V. (2014). Inmovilización química reversible de corta duración en perezosos de dos dedos (Choloepus didactylus) cautivos empleando ketamina, xilacina y midazolam. Rev Investig Vet Peru 25(2), 171-181.
López, C. & Mayor, P. (s.f.). Atlas de anatomía de especies silvestres de la Amazonia peruana. https://atlasanatomiaamazonia.uab.cat/atlas.asp?texto=3 (Accessed June 10, 2020).
Munaó, L. & Oliveira, P. (1999). Clinical problems of sloths (Bradypus sp. and Choloepus sp.) in captivity. J Zoo Wildl Med 30(1), 76-80.
Pauli, J. N., Peery, M. Z., Fountain, E. D. & Karasov, W. H. (2016). Arboreal Folivores Limit Their Energetic Output, All the Way to Slothfulness. Am Nat 188(2), 196–204. https://doi.org/10.1086/687032
Pérez, W., Méndez, V., Vazquez, N., Navarrete, M. & König, H. E. (2017). Gross anatomy of the heart of the alpaca (Vicugna pacos, Linnaeus 1758). Anat Histol Embryol 47(2), 110–118. https://doi.org/10.1111/ahe.12327
Pessoa, E., Zevêdo, A. & Soares, C. (2018). Agonistic interactions in the brown-throated three-toed sloth, Bradypus variegatus (Pilosa: Bradypodidae), in an urban environment in Rio Tinto, Paraíba, Brazil. Edentata 19, 42–46. https://doi.org/10.2305/IUCN.CH.2018.EDENTATA-19-1.5.en
Rowlatt, U. (1980). Functional and Nonfunctional Determinants of Mammalian Cardiac Anatomy, Parts I and II. In: Bourne, G. (Ed.). Comparative Anatomy and Development. Academic Press, New York, p. 259-300. https://doi.org/10.1016/B978-0-12-119401-7.50014-1
Torrente, C. & Bosch, L. (ed.). (2012). Medicina de urgencia en pequeños animales (Tomo I). Servet, Zaragoza. p. 360.
Torres-Trujillo, N. & Mantilla-Meluk, H. (2016). Anotaciones sobre la distribución del perezoso de dos dedos Choloepus hoffmanni (Pilosa: Megalonychidae) para el departamento del Quindío, en las listas de mamíferos de Colombia. Investigación, Biodiversidad y Desarrollo 35(1), 20-30.
Trejo-Chávez, A., Ramírez-Romero, R., Ancer-Rodríguez, J., Nevárez-Garza, A.M. & Rodríguez-Tovar, L.E. (2011). Disseminated Paracoccidioidomycosis in a Southern Two-Toed Sloth (Choloepus didactylus). J Comp Pathol 144(2-3), 231-234. https://doi.org/10.1016/j.jcpa.2010.08.012
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