Morphology of the brain base arteries of the giant anteater (Myrmecophaga tridactyla)

Authors

DOI:

https://doi.org/10.14393/BJ-v39n0a2023-62743

Keywords:

Brain, Irrigation, Myrmecophagidae, Xenarthra.

Abstract

This study aimed to describe the brain base arteries of the Myrmecophaga tridactyla using ten cadavers of adults from this species, including five male and five female specimens. The arterial vascular bed was perfused via the thoracic aorta with a dyed natural latex solution, and the animals were fixed and preserved with a 10% formaldehyde buffered solution. The encephala were removed, and their vessels dissected. Basilar artery formation occurred by anastomosis of the thick ventral spinal artery with vertebral arteries. The basilar artery formed two arterial islands and gave bulbar and pontine branches, and cranial, middle, and caudal cerebellar arteries and ended by forking into its terminal branches, the caudal communicating arteries. The blood supply of the encephalon derived solely from the vertebrobasilar system, and the arterial circle of the brain was closed caudally and rostrally. The absence of participation of internal carotid arteries in encephalon irrigation, the island formations by the basilar artery, and the fusiform shape of the arterial circle of the brain are peculiar characteristics of the vascular anatomy of the brain base of M. tridactyla.

Downloads

Download data is not yet available.

References

ARAÚJO, A.C.P. and CAMPOS, R. A systematic study of the brain base arteries and their blood supply sources in the chinchilla (Chinchilla lanigera - Molina 1782). Brazilian Journal of Morphological Sciences. 2005, 22(4), 221-232.

AYDIN, A. The morphology of circulus arteriosus cerebri in the porcupine (Hystrix cristata). Veterinarni Medicina. 2005, 50(3), 131-135.

AYDIN, A. et al. Morphological investigations on the circulus arteriosus cerebri in mole-rats (Spalax leucodon). Anatomia Histologia Embryologia. 2008, 37(3), 219-222. https://doi.org/10.1111/j.1439-0264.2007.00834.x

AZAMBUJA, R.C. et al. Sistematização das artérias da base do encéfalo em nutria (Myocastor coypus). Acta Scientiae Veterinariae. 2018, 46, 1-9. http://dx.doi.org/10.22456/1679-9216.85811

BARREIRO, J.R. et al. Morfologia dos vasos da base do encéfalo do quati (Nasua nasua). Pesquisa Veterinária Brasileira. 2012, 32(6), 567-572. https://doi.org/10.1590/S0100-736X2012000600016

BRUDNICKI, W. Basilar arteries of the brain in domestic goat (Capra hircus). Electronic Journal of Polish Agricultural Universities. 2000, 3(1), 1-4.

CAMPOS, A. et al. Artérias da base do encéfalo de eqüinos. Sistema occipito-basilar. Brazilian Journal of Veterinary Research and Animal Science. 2003, 40, 107-117.

DE VRIESE, B. Sur la signification morphologique des artères cérébrales. Archives de Biologie. 1905, 21, 357-457.

DELSUC, F. et al. The evolution of armadillos, anteaters and sloths depicted by nuclear and mitochondrial phylogenies: implications for the status of the enigmatic fossil Eurotamandua. Biological Sciences. 2001, 268, 1-27.

FARHA, A.S. et al. Computed tomography and cross‐sectional anatomy of the head in the giant anteater (Myrmecophaga tridactyla). Anatomia, Histologia, Embryologia. 2021, 50(4), 614-623. https://doi.org/10.1111/ahe.12669

FARIA, M.M.M.D. and PRADA, I.L.S. Comportamento anatômico da artéria basilar em fetos de búfalos (Bubalus bubalis Linnaeus, 1758). Revista Brasileira de Saúde e Produção Animal. 2001, 1(2), 54–60.

FERREIRA C.G. and PRADA I.L.S. O circuito arterial da base do encéfalo em suínos (Sus scrofa domesticus Linnaeus, 1758), formação e comportamento. Brazilian Journal of Veterinary Research and Animal Science. 2005, 42(1), 53-60. https://doi.org/10.11606/issn.1678-4456.bjvras.2005.26454

FERREIRA, J.R. and PRADA, I.L.S. O sistema carótico do encéfalo do Cebus apella sp., Linnaeus, 1766. Biota Neotropica. 2009, 9(1). https://doi.org/10.1590/S1676-06032009000100032

INTERNATIONAL COMMITTEE ON VETERINARY GROSS ANATOMICAL NOMENCLATURE. Nomina Anatomica Veterinaria. 6ed. Editorial Committee, Hannover, 2017, 160 p.

LIMA, E.M.M. et al. Estudo anatômico das artérias da base do encéfalo em gatos (Felis catus domesticus). ARS Veterinaria. 2006, 22(1), 1-7.

LIMA, A.R. et al. Anatomia do circuito arterial do encéfalo em Tamanduá-mirim. Revista Ciência Rural. 2013, 43(2), 277-282. http://dx.doi.org/10.1590/S0103-84782013000200014

LINDEMANN, T. et al. A systematic study of brain base arteries in the opossum Didelphis albiventris. Brazilian Journal of Morphological Sciences. 2000, 17(1), 35-41.

MELO, A.P.F. and PRADA, I.L.S. Anatomical Study of Arteries of the Base of Encephalon in Fetuses of Zebu Crossed Bovines. Brazilian Journal of Morphological Science. 1998, 15(2), 143-149.

MORAES S.O.S. et al. Morfometria do encéfalo e formação do circuito arterial em equinos mestiços. Ciência Animal Brasileira. 2014, 15(3), 330-338. https://doi.org/10.590/1809-6891v15i325477

PORTUGAL, J.O. et al. Morfometria do encéfalo e formação do circuito arterioso em coelhos da Nova Zelândia. Biotemas. 2014 Florianópolis. 2014, 27(2), 147-155.

RECKZIEGEL, S.H., LINDEMANN, T. and CAMPOS, R. A. Systematic study of the brain base arteries in capybara (Hydrochoerus hydrochaeris). Brazilian Journal of Morphological Science. 2001, 18(2), 104-110.

SCHALLER, O. Nomenclatura anatômica veterinária ilustrada. São Paulo: Ed. Manole, 1999.

STEELE, C. et al. On the atrophy of the internal carotid artery in capybara. Cell and Tissue Research. 2006, 326(3), 737-748. https://doi.org/10.1007/s00441-006-0218-0

WIBLE, J.R. Transformations in the extracranial course of the internal carotid artery in mammalian phylogeny. Journal of Vertebrate Paleontology. 1986, 6(4), 313-325. https://doi.org/10.1080/02724634.1986.10011628

Downloads

Published

2023-03-13

How to Cite

OLIVEIRA, K.M. de, MIRALLIA, Y.H., SILVA, D.B. da, MOREIRA, P.C., QUALHATO, G., FIGUEIREDO, A.C.R., GUIMARÃES, N.N. and CARDOSO, J.R., 2023. Morphology of the brain base arteries of the giant anteater (Myrmecophaga tridactyla). Bioscience Journal [online], vol. 39, pp. e39043. [Accessed26 March 2023]. DOI 10.14393/BJ-v39n0a2023-62743. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/62743.

Issue

Section

Agricultural Sciences