Atrição dental em Didelphis albiventris e D. marsupialis (Marsupialia, Didelphimorphia, Didelphidae) do Sul do Brasil

Aguiar, Marília da Silva; Ferigolo, Jorge; Rossi, João Luiz; Gioso, Marco Antônio

doi:10.1590/s0103-84782004000400025

Cited by 7 publications

(10 citation statements)

References 6 publications

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“…The two types of filiform papillae found in D. marsupialis may reflect the constantly changing diet resulting from its characteristic omnivorous habit, but the papillae do not appear to be influenced by habitat (Aguiar et al, 2004;Okada and Schraufnagel, 2005).…”

Section: Discussionmentioning

confidence: 95%

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Macroscopic and microscopic analysis of the tongue of the common opossum (Didelphis marsupialis)

Mançanares

Santos

Piemonte

et al. 2012

Microscopy Res & Technique

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2012Macroscopic and microscopic analysis of the tongue of the common opossum (Didelphis marsupialis) MICROSCOPY RESEARCH AND TECHNIQUE, HOBOKEN, v. 75, n. 10, pp. 1329-1333 ABSTRACTWe performed a macroscopic and microscopic study of the tongues of common opossums, Didelphis marsupialis, from South America. We studied two males and two females. We collected morphometric data on the tongue with precision calipers. For the light microscopy and scanning electron microscopy analyses, we fixed tissue fragments in 10% formaldehyde and 2.5% glutaraldehyde, respectively. The opossum tongues averaged 5.87 6 0.20 cm in length, 3.27 6 0.15 cm in width at the lingual body, and 3.82 6 0.15 cm in width at the root. The mean thickness of the lingual body was 1.8 6 0.1 cm, and the thickness of the root was 3.82 6 0.15 cm. Sharp filiform papillae were scattered across the entire tongue; conical filiform papillae occurred on the lingual body and tongue tip; fungiform papillae were scattered among the filiform papillae on the lingual body and tongue tip; and there were three vallate papillae at the root of the tongue. We found two strands of papillary projections in the tongue root. Despite the low variability observed in the lingual papillae, the morphological data obtained in this study may be related to the opossum's diverse food habits and the extensive geographic distribution of the species throughout America. Microsc. Res. Tech. 75:1329-1333, 2012

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Section: Discussionmentioning

confidence: 95%

“…Their diet varies seasonally and is primarily composed of insects, birds, eggs, small mammals, fruits, seeds, leaves, and, less frequently, reptiles, amphibians, and mollusks (Aguiar et al, 2004;Aragona and Marinho-Filho, 2009). …”

Section: Introductionmentioning

confidence: 99%

Macroscopic and microscopic analysis of the tongue of the common opossum (Didelphis marsupialis)

Mançanares

Santos

Piemonte

et al. 2012

Microscopy Res & Technique

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“…(Aguiar 2004), é um animal onívoro e, portanto, seus dentes apresentam funções semelhantes. Os incisivos apenas prendem alimentos, os caninos perfuraram e os pré-molares e molares, trituraram e cortam os alimentos sem que haja contato oclusal entre eles.…”

Section: Discussionunclassified

“…Alguns animais onívoros como Didelphis sp. apresentam o molar denominado tribosfênico, apresentando múltiplas faces e cúspides altamente pontiagudas, porém este tipo de dente promove um atrito dental muito acentuado, principalmente em animais jovem (Aguiar et al 2004).…”

Section: Introductionunclassified

Classificação morfofuncional dos dentes de quati, Nasua nasua

et al. 2011

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RESUMO.-O quati (Nasua nasua), é um mamífero onívo-ro, amplamente distribuído pela América do sul e encontrado em todo Brasil. A evolução provocou nos dentes dos mamíferos múltiplas variações, adequando às mais diversas dietas. Por essas variações nos dentes é possível classificar os vertebrados em ordem, gênero e família. Portanto este trabalho teve como objetivo descrever e classificar morfologicamente os dentes de machos e fêmeas de N. nausa, a fim de classificá-los e compará-los entre si e com a morfologia dos dentes de Canis familiaris descrita na literatura. Neste estudo foram utilizados cinco animais Nasua nasua, adultos, de ambos os sexos, cedidas pelo Criatório Cientifico Cecrimpas (Unifeob). Dois deles macerados tiveram a cavidade oral exposta para a realização da documentação fotográfica da posição dos dentes, outros três, os dentes foram submetidos à descalcificação e processamento e embebição em parafina para observação histológica. Na cavidade oral de N. nasua, devido ao dimorfismo sexual, foi possível comparar a dentição do macho e da fêmea macroscopicamente. A fêmea apresentou dentes menores, caninos arredondados e o macho, caninos maiores. Os animais apresentaram a fórmula dentária 2x(I3/3, C1/1, P4/4, M2/2) (I=incisivos, C=caninos, P=pré-molares e M=molares) = 40. Microscopicamente todos os dentes foram classificados como braquidontes, pois o esmalte é depositado sobre a dentina. Este tipo de dente não tem erupção constante como o hipsodonte, pois seu esmalte permanece intacto até a época de erupção. Seus dentes também foram classificados como anelodontes, por ter um período limitado de características de crescimento.Classificação morfofuncional dos dentes de quati, Nasua nasua 1 Naira C.G. Nasua nasua, also known as coati, is an omnivorous mammal with wide distribution in South America and found all over Brazil. The evolution adapted the teeth of the multiple mammals for most different diets. Through these variations it is possible to classify the vertebrates´ teeth of vertebrates in classes, genera and families. The objective of this paper is to describe and classify morphologically the teeth of Nasua nasua, comparing them with the teeth of Canis familiaris described in the literature. Five adult male and female Nasua nasua were studied. Photographs of the oral cavity of two macerated skulls were taken for documentation of teeth position. From other three animals, teeth were processed for decalcification and embedded in paraffin for histology. It was possible to reveal macroscopically male and female differences in N. nasua, due to a sexual dimorphism. Female have smaller round canine teeth, and male canine teeth are larger than the female ones. The animals presented the dental formula 2x (I3/3, C1/1, P4/4, M2/2) (I=incisive, C=canine, P=premolar, M=molar), with a total of 40 teeth. Microscopically, the teeth were classified as brachyodont with enamel in the most external region, covering the dentine. This type of teeth does not erupt constantly as the hypsodonts, because the enamel stays int...

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“…2 Dental calculus occurred in 57.1 % of the coatis and most had grade 2 severity. 12,20,22 Only one supernumerary tooth, on the left side of the maxilla, was detected in only one coati. 1,14 It is known that the alkaline pH that is found in the canine oral cavity, and presence of calcium salts in saliva, stimulates mineralization of plaque.…”

Section: Figure 14mentioning

confidence: 99%

Oral Cavity Evaluation and Dental Chart Registration of Coati (Nasua Nasua) in Captivity

et al. 2008

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The aims of this study were to develop a dental evaluate any oral cavity disease, develop gypsum models of the dental arches, and to register the occlusions found in coatis (Nasua nasua) in captivity Formulation of the dental chart was assisted by intraoral radiographs from the head of an adult coati cadaver of the same species with the following dental formula.: I 3/3, C 1/1, P 4/3, M 2/2. Seven live coatis of the Nasua nasua species were evaluated. Five of the seven coatis presented with various dental abnormalities as follows: dental plaque (71.4 0%), gingivitis (71.4 %), periodontitis (57.1 %), dental stain (42.9 %), dental abrasion (57.1 %), dental fracture (57.1 %), pulp exposure (42.9 %), malocclusion (57.1 %) and supernumerary teeth (14.2 %).

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Atrição dental em Didelphis albiventris e D. marsupialis (Marsupialia, Didelphimorphia, Didelphidae) do Sul do Brasil

Cited by 7 publications

References 6 publications

Macroscopic and microscopic analysis of the tongue of the common opossum (Didelphis marsupialis)

Macroscopic and microscopic analysis of the tongue of the common opossum (Didelphis marsupialis)

Classificação morfofuncional dos dentes de quati, Nasua nasua

Oral Cavity Evaluation and Dental Chart Registration of Coati (Nasua Nasua) in Captivity

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