Gross Osteology and digital radiography of the common Capybara (Hydrochoerus hydrochaeris), Carl Linnaeus, 1766 for scientific and clinical application

Authors

  • Derek Andrew Rosenfield Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal http://orcid.org/0000-0001-5546-8872
  • Nicole Fidalgo Paretsis Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Cirurgia
  • Priscila Rocha Yanai Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Cirurgia
  • Cristiane Schilbach Pizzutto Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.2020.172323

Keywords:

Digital X-ray, Anatomy, Hydrochoerus hydrochaeris, Rodentia, Caviidae

Abstract

Being able to study anatomical structures of wildlife species for science and clinical practice is of great importance. We aimed to describe the normal gross osteology of the common adult capybara Hydrochoerus hydrochaeris (Linnaeus, 1766), using macerated bone specimens and high-resolution digital radiography. The complete axial and appendicular skeleton was further compared with previously reported anatomical findings. For this purpose, we used three adult capybara cadavers (two females and one male), with a mean bodyweight of ±50 kg. Some H. hydrochaeris-specific morphological characteristics, especially in the skull region, show evidence of adaptation to aquatic life, such as an elongated head shape, with eyes, ears, and nose, located dorsally, to stay above water. Additionally, the entire bone structure demonstrates the size and weight support of the largest rodent and its adaptation with respect to foraging and locomotion behaviors. As a semi-aquatic herbivore, classified as cursorial (having limbs adapted for running), the authors believe it should be reclassified as cursorial-swimming/diving. Moreover, we argue to consider a differentiation between H. hydrochaeris silvestris to H. hydrochaeris synanthrope, due to substantial weight variation, in some cases > 100%. This inevitably has an impact on the development of bone structure, thus influencing habitual adaptation, and consequently, its clinical implications and animal handling. Radiography exams helped in the identification of bone structures, which otherwise were not observed in anatomical specimens, such as ossa sesamoidea, including the ossicle lunulae. Likewise, the radiographs were particularly helpful in overall better comprehension of the intubation and catheterization procedures. We believe this work can contribute as a reference to anatomical studies for students and professionals acting in clinic, surgery, and research.

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Author Biography

Derek Andrew Rosenfield, Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal

Reprodução Animal / Silvestres

References

Abreu Bovo AA. Capybaras (Hydrochoerus hydrochaeris) in anthropogenic environments: challenges and conflicts. In: Gheler-Costa C, Lyra-Jorge MC, Verdade LM, editors. Biodiversity in agricultural landscapes of southeastern Brazil. Warsaw: De Gruyer; 2016. p. 179-89. https://doi.org/10.1515/9783110480849-013.

Araújo FAP, Sesoko NF, Rahal SC, Teixeira CR, Müller TR, Machado MRF. Bone morphology of the hind limbs in two caviomorph rodents. Anat Histol Embryol. 2012;42(2):114-23. https://doi.org/10.1111/j.1439-0264.2012.01172.x. PMid:22731111.

Araujo GR, Paula TAR, Deco-Souza T, Morato RG, Bergo LCF, Silva LC, Jorge-Neto PN, Sampaio BFB. Pharmacological semen collection in cougars (Puma concolor: Mammalia: Carnivora: Felidae). Arq Bras Med Vet Zootec. 2020;72(2):437-42. https://doi.org/10.1590/1678-4162-11030.

Bode FF, Cao JA, Resoagli JM, Fernández JA, Llano Laiseca E. Descripción anatómica del esqueleto apendicular del carpincho (Hydrochoerus hydrochaeris). Rev Vet. 2016a;25(1):21. https://doi.org/10.30972/vet.251544.

Bode FF, Fernández JA, Cao JA, Resoagli JM. Descripción del esqueleto axial del carpincho (Hydrochoerus hydrochaeris). Rev Vet. 2016b;24(1):44. https://doi.org/10.30972/vet.2411149.

Brombini GC, Rahal SC, Schimming BC, Santos IFC, Tsunemi MH, Mamprim MJ, Alves LS, Filadelpho AL, Teixeira CR. Radiological and osteological study of the pelvic limbs in free-ranging capybaras (Hydrochoerus hydrochaeris). Anat Histol Embryol. 2018;47(3):239-49. https://doi.org/10.1111/ahe.12349. PMid:29492995.

Delaney MA, Treuting PM, Rothenburger JL. Rodentia. In: Terio KA, McAloose D, St Leger J, editors. Pathology of wildlife and zoo animals. London: Academic Press; 2018. p. 499-515. https://doi.org/10.1016/B978-0-12-805306-5.00020-1.

Elissamburu A, de Santis L. Forelimb proportions and fossorial adaptations in the scratch-digging rodent Ctenomys (Caviomorpha). J Mammal. 2011;92(3):683-9. https://doi.org/10.1644/09-MAMM-A-113.1.

Girotto CH. Avaliação da máscara laríngea como alternativa a sonda endotraqueal para manutenção da anestesia inalatória sob ventilação espontânea em capivaras (Hydrochoerus hydrochaerus) [thesis]. Botucatu: Faculdade de Medicina, Universidade Estadual Paulista “Júlio de Mesquita Filho”; 2018.

Herrera EA. Capybara social behavior and use of space: patterns and processes. In: Moreira JR, editor. Capybara: biology, use and conservation of an exceptional neotropical species. New York: Springer; 2013. p. 195–207. https://doi.org/10.1007/978-1-4614-4000-0_11.

Hirota IN, Alves LS, Gandolfi MG, Félix M, Ranzani JJT, Brandão CVS. Tomographic and anatomical study of the orbit and nasolacrimal duct in capybaras (Hydrochoerus hydrochaeris: Linnaeus, 1766). Anat Histol Embryol. 2018;47(4):298-305. https://doi.org/10.1111/ahe.12352. PMid:29532494.

International Committee on Veterinary Gross Anatomical Nomenclature – ICVGAN. Nomina Anatomica Veterinaria 6th ed. Germany: Editorial Committee Hanover; 2017.

Kihara MT. Descrição anatomorradiográfica do esqueleto axial, do membro torácico e dos dentes da capivara (Hydrochoerus hydrochaeris) [thesis]. Jaboticabal: Universidade Estadual Paulista “Júlio de Mesquita Filho”; 2017.

Luz HR, Costa FB, Benatti HR, Ramos VN, Serpa MCA, Martins TF, Acosta ICL, Ramirez DG, Muñoz-Leal S, Ramirez-Hernandez A, Binder LC, Carvalho MP, Rocha V, Dias TC, Simeoni CL, Brites-Neto J, Brasil J, Nievas AM, Monticelli PF, Moro MEG, Lopes B, Aguiar DM, Pacheco RC, Souza CE, Piovezan U, Juliano R, Ferraz KMPMB, Szabó MPJ, Labruna MB. Epidemiology of capybara-associated Brazilian spotted fever. PLoS Negl Trop Dis. 2019;13(9):e0007734. https://doi.org/10.1371/journal.pntd.0007734. PMid:31490924.

Moreira JR, Ferraz KMPMB, Herrera EA, MacDonald DW, editors. Capybara. New York: Springer New York; 2013. https://doi.org/10.1007/978-1-4614-4000-0.

Morgan CC, Álvarez A. The humerus of South American caviomorph rodents: shape, function, and size in a phylogenetic context: shape variation of humerus of caviomorph rodents. J Zool. 2013;290(2):107-16. https://doi.org/10.1111/jzo.12017.

Ojasti J. Estudio biológico del chigüire o capibara. Caracas, Venezuela: Fondo Nacional de Investigaciones Agropecuarias; 1973. 292 p.

Passos Nunes FB, da Silva SC, Cieto AD, Labruna MB. The dynamics of ticks and capybaras in a residential park area in Southeastern Brazil: implications for the risk of Rickettsia rickettsii infection. Vector Borne Zoonotic Dis. 2019;19(10):711-6. https://doi.org/10.1089/vbz.2019.2479. PMid:31135286.

Paula TAR, Walker N. Reproductive morphology and physiology of the male capybara. In: Moreira JR, editor. Capybara: biology, use and conservation of an exceptional neotropical species. New York: Springer; 2013. p. 107-29. https://doi.org/10.1007/978-1-4614-4000-0_6.

Pereira FMAM, Bete SBS, Inamassu LR, Mamprim MJ, Schimming BC. Anatomy of the skull in the capybara (Hydrochoerus hydrochaeris) using radiography and 3D computed tomography. Anat Histol Embryol. 2020;49(3):317-24. https://doi.org/10.1111/ahe.12531. PMid:31981432.

Pereira FMAM. Estudo do crânio de capivaras (Hydrochoerus hydrochaeris): craniometria, radiografia e tomografia computadorizada 3D [thesis]. Botucatu: Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista “Júlio de Mesquita Filho”; 2019.

Rocha-Barbosa O, Youlatos D, Gasc J-R, Renous S. The scapulaer region of some cursorial Cavioidea (Rodentia: mammalia). Mammalia. 2002;66(3). https://doi.org/10.1515/mamm.2002.66.3.413.

Rosenfield D, Ferraro M, Igayara C, Cortopassi SRG, Pizzutto CS. Chemical immobilization of free-living capybaras (Hydrochoerus hydrochaeris) using ketamine-dexmedetomidine combination and a remote drug delivery system. Braz. J. Vet. Med. 2020;42(1):e107220. https://doi.org/10.29374/2527-2179.bjvm107220.

Rosenfield DA, Nichi M, Losano JDA, Kawai G, Leite RF, Acosta AJ, Baquero OS, Schilbach Pizzutto C. Field-testing a single-dose immunocontraceptive in free-ranging male capybara (Hydrochoerus hydrochaeris): evaluation of effects on reproductive physiology, secondary sexual characteristics, and agonistic behavior. Anim Reprod Sci. 2019a;209:106148. https://doi.org/10.1016/j.anireprosci.2019.106148. PMid:31514916.

Rosenfield DA, Pizzutto CS. Positive-reinforcement strategies to reduce capture-stress in Capybaras. Acta Sci Biol Sci. 2019;41:e45819. https://doi.org/10.4025/actascibiolsci.v41i1.45819.

Rosenfield DA, Polo G, Pizzutto CS. Brazilian spotted fever prevention through a nonlethal capybara population control strategy. Rev Soc Bras Med Trop. 2019b;52:e20190156. https://doi.org/10.1590/0037-8682-0156-2019. PMid:31596349.

Rosenthal K, Forbes N, Frye F, Lewbart G. Rapid review of exotic animal medicine and husbandry: pet mammals, birds, reptiles, amphibians and fish. 1st ed. FL: CRC Press; 2008.

Russo GA. Postsacral vertebral morphology in relation to tail length among primates and other mammals. Anat Rec. 2015;298(2):354-75. https://doi.org/10.1002/ar.23004. PMid:25132483.

Schimming BC, Rahal SC, Shigue DA, Linardi JL, Vulcano LC, Teixeira CR. Osteology and radiographic anatomy of the hind limbs in Marshdeer (Blastocerus dichotomus). Pesq Vet Bras. 2015;35(12):997-1001. https://doi.org/10.1590/S0100-736X2015001200009.

Silva E. Estudo anatômico para aplicação clinico-cirúrgica do aparelho locomotor de capivaras (Hydrochoerus hydrochaeris) [thesis]. São Paulo: Universidade de São Paulo; 2019.

Silveira, EED. Estudo anatômico para aplicação clinico-cirúrgica do aparelho locomotor de capivaras (Hydrochoerus hydrochaeris) [thesis]. São Paulo: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo; 2019.

Slijper EJ. Comparative biologic-anatomical investigations on the vertebral column and spinal musculature of mammals. Amsterdam: North-Holland Publishing Company; 1946. 158 p.

Stan FG. Anatomical particularities of male reproductive system of guinea pigs (Cavia porcellus). Bull Univ Agric Sci Vet Med Cluj-Napoca Vet Med. 2015;72(2):288-95. https://doi.org/10.15835/buasvmcn-vm:11410.

Stein BR, Casinos A. What is a cursorial mammal? J Zool. 1997;242(1):185-92. https://doi.org/10.1111/j.1469-7998.1997.tb02939.x.

Upham N, Patterson DB. Evolution of the caviomorph rodents: a complete phylogeny and timetree of living genera. In: Vassallo AI, Antenucci D, editors. Biology of caviomorph rodents: diversity and evolution. Buenos Aires: SAREM; 2015. 58 p.

West G, Heard DJ, Caulkett N. Zoo animal, and wildlife immobilization and anesthesia. Ames: John Wiley & Sons; 2013. 1360 p.

Yanai PR, Cortopassi S. Salpingectomy, and deferentectomy in capybara (Hydrochoerus hydrochaeris, L. 1766): experimental and comparative study between laparoscopic and open surgical approaches [Internet]. 2020 [cited 2020 Aug 15]. Available from: https://www.researchgate.net/project/Salpingectomy-and-deferentectomy-in-capybara-Hydrochoerus-hydrochaeris-L-1766-experimental-and-comparative-study-between-laparoscopic-and-open-surgical-approaches.

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Published

2020-12-22

How to Cite

Rosenfield, D. A., Paretsis, N. F., Yanai, P. R., & Pizzutto, C. S. (2020). Gross Osteology and digital radiography of the common Capybara (Hydrochoerus hydrochaeris), Carl Linnaeus, 1766 for scientific and clinical application. Brazilian Journal of Veterinary Research and Animal Science, 57(4), e172323. https://doi.org/10.11606/issn.1678-4456.bjvras.2020.172323

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