SCANNING ELECTRON MICROSCOPY STUDY OF THE DORSAL SURFACE OF THE TONGUE IN Chaetophractus vellerosus (MAMMALIA, DASYPODIDAE)

Estecondo, Silvia; Codón, Stella Maris; Casanave, Emma Beatriz

doi:10.4067/s0716-98682001000300003

Cited by 7 publications

(27 citation statements)

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“…Only two vallate papillae were observed in the distal third of Bradypus variegatus' tongue, corroborating with the results from Benetti et al (2009) in Bradypus torquatus and agreeing with what was observed in other Xenarthras, such as armadillos (Morais and Watanabe, 1988;Morais et al, 1994;Estecondo et al, 2001;Estecondo et al, 2004;Ciuccio et al, 2008).…”

Section: The Ventral Face Of the Bradypus Variegatus'supporting

confidence: 79%

“…Observing the fungiform papillae regarding the location, Benetti et al (2009) in Bradypus toquartu demonstrated that these are situated at the lateral margin of the tongue apex, similar to the species of our study, but on Bradypus variegatus, the fungiform papillae, besides being agglomerated on the tongue apex, are also located distributed in the dorsal surface of the tongue, as is reported in C. vellerosus armadillos (Estecondo et al, 2001), C. villosus and Zaedyus pichiy (Ciuccio et al, 2008), besides other mammals, such as rodents, omnivorous and carnivorous (Jackowiak and Godynicki, 2004). In Saimiri sciureus (Branco et al, 2011) these papillae are distributed all over the tongue and there are no specific concentration points.…”

Section: The Ventral Face Of the Bradypus Variegatus'supporting

confidence: 54%

“…The absence of foliate papillae has been considered a primitive characteristic, and a notable fact is that, although the Xenarthras belong to a primitive order of mammals (Kriegs et al, 2006), only the armadillo species (Euphractus sexcinctus) (Morais and Watanabe, 1988) has this papillae, and its absence is reported in the other species studied, such as Dasypus novemcictus (Morais et al, 1994), C. vellerosus and C. villosus (Estecondo et al, 2001;Estecondo et al, 2004), and Z. pichiy (Ciuccio et al, 2008).…”

Section: The Ventral Face Of the Bradypus Variegatus'mentioning

confidence: 99%

“…The standard of filiform papillae, comprising the whole dorsal surface of the tongue, with the growing number of branches for the medium third of the body, seems to be common in armadillos, observed in the species: Euphractus sexcinctus (Morais and Watanabe, 1988), Dasypus novemcintus (Morais et al, 1994), C. vellerosus (Estecondo et al, 2001), C. villosus and Zaedyus pichiy (Ciuccio et al, 2008).…”

Section: The Ventral Face Of the Bradypus Variegatus'mentioning

confidence: 99%

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Tongue papillae morphology of brown-throated sloth Bradypus variegatus (SCHINZ, 1825)

Martins

Pinheiro

Ferreira

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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The Bradypus variegatus inhabits the forests of South America and feeds from leaves, branches and sprouts from different plants. Due to its diet and the lack of literature on the morphological aspect of Xenarthras, five Bradypus variegatus tongues from animals which died from natural causes were evaluated, and they came from Pará State Museum Emílio Goeldi and were donated to the Laboratory of Animal Morphological Research (LaPMA) from UFRA, for revealing the different types of papillae and epithelial-connective tissue. Macroscopically, the tongues presented elongated shape, rounded apex, body, root, median sulcus in the root's apex, and two vallate papillae. The mucous membrane of the tongue revealed a keratinized stratified pavement epithelium, while the ventral surface of the tongue was thin and smooth, not provided with any type of papillae. However, the dorsal surface of the tongue was irregular with the presence of three types of papillae: filiform, fungiform and vallate papillae. The filiform papillae found were of a simple type, presenting a rounded base, irregularly distributed with a larger concentration and development on the tongue's apex and body. The fungiform papilla showed a practically smooth surface with irregular format, with the presence of gustatory pores; these were found all over the dorsal surface, with larger concentration at the rostral part of the apex. Only two vallate papillae were observed disposed in the root of the tongue, surrounded by a deep groove, and revealing several taste buds. The tongues from Bradypus variegatus presented gustatory papillae similar to the ones described for other Xenarthras species and wild mammals. Keywords: morphology, lingual papillae, Bradypus variegatus RESUMO A Bradypus variegatus habita florestas da América do Sul e alimenta-se de folhas, ramos e brotos de várias plantas. Em decorrência de sua dieta, bem como da escassez de literatura sobre aspectos morfológicos dos Xenarthras, avaliaram-se cinco línguas de Bradypus variegatus, que foram a óbito por causas naturais, provenientes do Museu Paraense Emílio Goeldi e doados ao Laboratório de Pesquisa

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Section: The Ventral Face Of the Bradypus Variegatus'supporting

confidence: 79%

Section: The Ventral Face Of the Bradypus Variegatus'supporting

confidence: 54%

Section: The Ventral Face Of the Bradypus Variegatus'mentioning

confidence: 99%

Section: The Ventral Face Of the Bradypus Variegatus'mentioning

confidence: 99%

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Tongue papillae morphology of brown-throated sloth Bradypus variegatus (SCHINZ, 1825)

Martins

Pinheiro

Ferreira

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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“…They differ according to their distribution on the tongue. The hairy armadillo (Estecondo et al, 2001), reeves' muntjac deer (Zheng and Kobayashi, 2006), Saanen goat (Kurtul and Atalgin, 2008), albino rat (El-Bakry, 2010) and other species of animals also have several types of filiform papillae. For comparison, in Japanese monkey (Iwasaki et al, 1992) and Bactrian camel (Erdunchaolu et al, 2001) the structure of these papillae are generally identical in all areas of the tongue.…”

Section: Discussionmentioning

confidence: 99%

Light and scanning electron microscopic study of the filiform papillae of the tongue in adult rabbit (Oryctolagus cuniculus f. domestica, Linnaeus 1758)

Kulawik¹,

Godynicki²,

Frackowiak³

2015

Nauka Przyr. Technol.

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Summary. This study was conducted on 10 tongues of adult rabbits (Oryctolagus cuniculus f. domestica), of both sexes (five females and five males). The filiform papillae of the tongue were studied, using light and scanning electron microscope. The filiform papillae were arranged on the dorsal surface of the apex and body of the tongue and on its margins. The investigation showed that there were single and complex filiform papillae on the rabbit tongue. These single filiform papillae were cone-shaped, similarly as their connective tissue cores. Complex papillae were palm-shaped and cone-shaped with three to seven processes. However, the number of processes towards the throat diminished. Connective tissue cores of these papillae had also processes. The filiform papillae consisted of an anterior and posterior epithelial cell column. The anterior epithelial cell column showed signs of parakeratinization or soft keratinization whereas the posterior epithelial cell column -hard keratinization. Between filiform papillae there was interpapillary epithelium which did not have any signs of keratinization.

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Morphology of the tongue of Vermilingua (Xenarthra: Pilosa) and evolutionary considerations

Casali

Martins-Santos

Santos

et al. 2017

Journal of Morphology

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The tongue of anteaters (Xenarthra, Pilosa, Vermilingua) is a highly specialized for myrmecophagy. Here, we describe the topography and histology of the tongue, and compare it to that of other xenarthrans and other myrmecophagous eutherian mammals. The tongue of Vermilingua is long and slender, with an apical protuberance, which differs between Myrmecophagidae and Cyclopes didactylus. In the former, the rostral region is conical, and in the latter, it is dorsoventrally compressed, as observed in sloths. The tongue of Vermilingua has filiform and circumvallate papillae on the surface; foliate and fungiform papillae are absent. The filiform papillae of Myrmecophaga tridactyla are simple all over the tongue, differing from Tamandua tetradactyla and Cyclopes didactylus, which present composed filiform papillae in the rostral and middle regions. Histologically, the tongue has a peculiar organization of muscular and neurovascular tissues, differing from the usual mammalian pattern. However, the tongue structure is less divergent in Cyclopes. The presence of two circumvallate papillae is common to the three major clades of Xenarthra (Cingulata, Folivora and Vermilingua). In each group, the tongue may reflect functional features related to myrmecophagous (anteaters and some armadillos), omnivorous (remaining armadillos) and folivorous (sloths) feeding habits. The similarities between the tongues of Vermiligua and other non-xenarthran eutherian myrmecophagous mammals are somewhat general and, under close inspection, superficial, being an example of different lineages achieving the same morphofunctional adaptations through distinct evolutionary pathways.

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SCANNING ELECTRON MICROSCOPY STUDY OF THE DORSAL SURFACE OF THE TONGUE IN Chaetophractus vellerosus (MAMMALIA, DASYPODIDAE)

Cited by 7 publications

References 0 publications

Tongue papillae morphology of brown-throated sloth Bradypus variegatus (SCHINZ, 1825)

Tongue papillae morphology of brown-throated sloth Bradypus variegatus (SCHINZ, 1825)

Light and scanning electron microscopic study of the filiform papillae of the tongue in adult rabbit (Oryctolagus cuniculus f. domestica, Linnaeus 1758)

Morphology of the tongue of Vermilingua (Xenarthra: Pilosa) and evolutionary considerations

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