Morphology of the Stomach of Tayra (Eira barbara)

Authors

  • André Luis de Sousa Nogueira Lima Graduação Medicina Veterinária, Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.
  • Thamara Cozzi Gonçalves Graduação Medicina Veterinária, Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.
  • Érika Renata Branco Laboratório de Pesquisa Morfológica Animal (LaPMA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.
  • Rogério Antônio Ribeiro Rodrigues Laboratório de Histologia e Embriologia Animal (LHEA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.
  • Elane Guerreiro Giese Laboratório de Histologia e Embriologia Animal (LHEA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.
  • Daiane Costa do Carmo Mineração Paragominas S/A (MPSA) - Hydro Paragominas -Empresa Eco Florestal, Belém.
  • Juliana Teixeira Santos Mineração Paragominas S/A (MPSA) - Hydro Paragominas -Empresa Eco Florestal, Belém.
  • Ana Rita de Lima Laboratório de Pesquisa Morfológica Animal (LaPMA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil.

DOI:

https://doi.org/10.22456/1679-9216.84087

Abstract

Background: The Tayra (Eira barbara) is a mammal of the family Mustelidae with a significant presence in Latin America, it is considered an opportunist and extremely agile omnivorous.
Some organs compose the digestive system and the stomach is a substantial organ for this system. The stomach have a small and a large curvature and the regions of the cardia, fundus, body and pylorus. Histologically, the stomach is made up of four layers or tunics that contributes in digestive functions.  However, due the limited information available in the literature about morphophysiology of wildlife, this study aimed to clarify the morphology of Eira barbara stomach to understand your digestive system.

Materials, Methods & Results: Three males and three females of Eira barbara species were studied (all young adults), all samples were originated of the Bauxite Mine area, in Paragominas, Pará state, Brazil provided of donation to Morphological Animal Research Laboratory (LaPMa) of the Universidade Federal Rural da Amazonia (UFRA), after death by trampling. The corpses were treated with aqueous 10% formaldehyde solution intramuscular injections, subcutaneous and intracavitary. After dissection, the collected material was processed following histologic standard protocols for the subsequent preparation of slides. The studied animals showed the stomach on the left antimere the abdominal cavity, with saccular format with the presence of large and small curvatures. The organ showed composite mucosa made with various gastric folds distributed in regions of the cardia, fundus and pylorus. A microscopic analysis of Eira barbara stomach revealed the presence of tunics or layers which gradually invaginate the lumen of the organ and underlying lamina propria was located to the prismatic epithelium and muscular mucosae and mucosa itself. In the region of the cardia, the muscle layer was deeply situated on the lamina propria, consisting of smooth muscle tissue with circular and longitudinal fibers. The submucosa consists of loose connective tissue; it is much thicker than the lamina propria and has many vessels. The first portion of the stomach showed long glands, while with short pits. In light microscopy, the fundic region revealed the presence of a highly pleated epithelium with elongated glands composed of clear and basally placed cells, with flattened nuclei. These cells are named mucous. Along the short region of the gastric pits, the presence of large cells was reported, pyramidal or rounded, central nucleus, called parietal. The pyloric region microscopy revealed the presence of short glands, similar to those previously described in the cardia region. The wide presence of goblet cells in the final portion of the pylorus indicated gradual transition between the regions of the stomach to the intestine, called duodenum-pylorus transition. The muscular layer showed thick muscle bundles just in circular direction, being responsible for the formation of the pyloric sphincter.

Discussion: The morphological analysis of the stomachs showed morphological and topographical similarities to the literature description for pets and wild mammals, however, were found in abundant quantities goblet cells in the transition duodenal pylorus. The goblet cells are located throughout the length of the small and large intestine and are responsible for the production and maintenance of the protective mucus synthesizing as glycoproteins known as mucins.

Downloads

Download data is not yet available.

References

Banks J.W. 1992. Histologia Veterinária Aplicada. São Paulo: Manole, 629p.

Borsari F.N., Martins L. L., dos Reis A.C.G., da Cruz C., Oliveira M.F. & Machado M.R.F. 2010. Análise macroscópica e microscópica do estômago do Mocó (Kerodon rupestris). Revista Pubvet. 4: 868.

Cabrera A. & Yepes J. 1960. Mamíferos sudamericanos. Buenos Aires: Ediar, 187p.

Carvalho C.A., Fernandes K.M., da Matta S.L.P., Fonseca C.C., Pinto R. & Oliveira L.L. 2011. Aspectos macroscópicos e histológicos da mucosa gástrica de ratos wistar e sua utilização em modelo de úlceras gástricas. Archives of Veterinary Science. 16: 44-53.

Cavalcante Filho M.F., Miglino M.A., Machado G.V., Bevilacqua E. & Neves W.C. 1998. Estudo comparativo sobre suprimento arterial do estômago do queixada (Tayassu pecari) e do cateto (Tayassu tacaju) [Linnaeus, 1789]. Brazilian Journal of Veterinary Research and Animal Science. 35: 20-24.

Chaves P.T.C. & Vazzoler G. 1984. Aspectos biológicos de peixes amazônicos III. Anatomia microscópica do esôfago, estômago e cecos pilóricos de Semaprochilodus insignis (Characiformes: Prochilodontidae). Acta Amazonica. 14: 343-353.

Cheida C.C., Nakano-Oliveira E., Fusco-Costa R., Rocha-Mendes F. & Quadros J. 2006. Ordem Carnívora. In: Reis N.R, Peracchi A.L., Pedro W.A. & Lima I.P. (Eds). Mamíferos do Brasil. Londrina: Universidade Estadual de Londrina, pp.231-275.

Didio L.J.A. 2002. Sistema digestório. In: Didio L.J.A. (Ed). Tratado de Anatomia Sistêmica Aplicada. São Paulo: Atheneu, pp.463-582.

Dyce K.M., Sack W.O. & Wensing C.J.G. 2010. Tratado de Anatomia Veterinária. Rio de Janeiro: Elsevier, 872p.

Emmons L.H. & Freer F. 1990. Neotropical rainforest mammals: a field guide. Illinois: University of Chicago Press, 281p.

Frappier B.L. 2006. Digestive system. In: Eurell J.A. & Frappier B.L. (Eds). Dellmann’s Textbook of Veterinary Histology. Ames: Wiley-Blackwell, pp.170- 211.

George L.L., Alves C.E.R. & Castro R.R.L. 1998. Histologia Comparada. São Paulo: Roca, 298p.

Getty R. 1986. Anatomia dos animais domésticos. Rio de Janeiro: Guanabara Koogan, 2048p.

Hall E.R. & Dalquest W.W. 1963. The mammals of Veracruz. v.14. Museum of Natural History: University of Kansas Publication, pp.165-362.

Hershkovitz P. 1972. The recent mammals of the Neotropical region: a zoogeographical and ecological review. In: Keast A., Erk F. C. & Glass B. (Eds). Evolution, mammals, and southern continents. Albany: State University of New York Press, pp.311-431.

International Committee on Veterinary Gross Anatomical Nomenclature. 2012. Nomina Anatomica Veterinaria. Hannover: Columbia, Gent, Sapporo: Editorial Committee, 177p.

Jarreta G.B. 2004. Ultra-sonografia do aparelho reprodutor feminino. In: Carvalho C.F. (Ed). Ultra-sonografia em pequenos animais. São Paulo: Roca, pp.181-206.

Junqueira L.C. & Carneiro J. 2008. Histologia Básica. Rio de Janeiro: Guanabara Koogan, 542p.

Kustritz M.V.R. 2005. Pregnancy diagnosis and abnormalities of pregnancy in the dog. Theriogenology. 64: 755-765.

Pinheiro A.C.O., Lima A.R., Carvalho A.F., Pereira L.C. &. Branco É. 2014. Aspectos morfológicos macro e microscópicos do estômago de tamanduá-mirim (Tamandua tetradactyla). Arquivo Brasileiro de Medicina Veterinária e Zootecnia. 66: 1089-1096.

Presley S.J. 2000. Eira barbara. Mammalian Species. 636: 1-6.

Samuelson D.A. 2007. Tratado de histologia veterinária. Rio de Janeiro: Elsevier, 544 p.

Silva L.C.S. 2012. Contribuição ao estudo do estômago do sagui-de-tufo-preto (Callithrix penicillata). 81f. Dissertação, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo.

Stinson A.W. & Calhoun M.L. 1982. Sistema Digestivo. In: Dellman H.D. & Brown E.M. (Eds). Histologia Veterinária. Rio de Janeiro: Guanabara Koogan, pp.164-211.

Sunquist M.E., Sunquist F.C. & Daneke D.E. 1989. Ecological separation in a Venezuelan llanos carnivore community. In: Redford K. & Eisenberg J. (Eds).Advances in Neotropical Mammalogy. Gainesville: Sandhill Crane Press, pp.197-232.

Tolosa E.M.C., Rodrigues C.J., Behmer O.A. & Freitas Neto A.G. 2003. Manual de técnicas para histologia normal e patológica. São Paulo: Manole, 341p.

Tortato F.R. & Althoff S.L. 2007. Variações na coloração de iraras (Eira barbara Linnaeus, 1758 - Carnivora, Mustelidae) da Reserva Biológica Estadual do Sassafrás, Santa Catarina, sul do Brasil. Revista Biota Neotropica. 7: 365-367.

Van Leeuwen P. 2002. Significance of combined nutritional and morphological precaecal parameters for feed evaluation in nonruminants. 153p. Thesis. Thesis of Wageningen University, Wageningen.

Published

2018-01-01

How to Cite

Lima, A. L. de S. N., Gonçalves, T. C., Branco, Érika R., Rodrigues, R. A. R., Giese, E. G., Carmo, D. C. do, Santos, J. T., & Lima, A. R. de. (2018). Morphology of the Stomach of Tayra (Eira barbara). Acta Scientiae Veterinariae, 46(1), 6. https://doi.org/10.22456/1679-9216.84087

Issue

Section

Articles

Most read articles by the same author(s)