Ultrastructural aspects of lingual papillae in squirrel monkey (Saimiri sciureus)

Abstract

Saimiri sciureus is one of the smallest Cebidae native of Amazon region and also found at the biological reserve of northeast Atlantic forest. It is an omnivore animal, with diversified diet that directly influences the lingual mucosa, which includes certain types of papillae with different organization levels. The present study attempted to describe the morphological and ultrastructure aspects of the dorsal surface of the S. sciureus. Five tongues of de S. sciureus were analyzed from three males and two females who died from natural causes and were obtained from breeding colonies of CENP-Ananindeua-PA. Main macroscopic features were a general triangular shape with a craniocaudal elongation pointed apex. Tissue samples--apex, body, and root of tongue--were fixed in modified Karnovsky solution, following standard scanning protocol, mounted in stubs, coated by gold, and analyzed by Scanning Electron Macroscopy (SEM). Four types of papillae were described: filiform (along all tissue extension with 154 μm of diameter), fungiform (along all tissue extension with 272 μm of diameter), vallate [just three units in caudal (dorsal) portion with 830 μm of diameter] and foliate (one pair at caudolateral surface with ∼ 13 projections and 3000 μm in length). Data analysis indicates that the distribution and ultra structural morphology of the S. sciureus lingual papillae are some similar to other primates.

Morphological characteristics of the tongue of the rock cavy- Kerodon rupestris wied, 1820 (Rodentia, caviidae)

“…The lingual papillae of K. rupestris were irregularly distributed on the dorsal surface of the tongue, as described in Cavia porcellus (KOBAYASHI, 1990), in wild carnivores as Nasua nasua (SOUZA et al, 2012. ), in marsupials as Didelphis marsupialis ; in domestic mammals as Felis catus and Oryctolagus cuniculus (CHAMORRO et al, 1987); and, primates as Saimiri sciureus (BRANCO et al, 2011. ) and Callithrix penicillata (BRANCO et al, 2012), besides other non-mammalian vertebrates such as amphibians, reptiles and birds (IWASAKI, 2002).…”

“…), in marsupials as Didelphis marsupialis ; in domestic mammals as Felis catus and Oryctolagus cuniculus (CHAMORRO et al, 1987); and, primates as Saimiri sciureus (BRANCO et al, 2011. ) and Callithrix penicillata (BRANCO et al, 2012), besides other non-mammalian vertebrates such as amphibians, reptiles and birds (IWASAKI, 2002).…”

“…To aid understanding the different distributions of the lingual papillae in different species, Table 1 shows their distribution in several rodents and non-rodents species. (CHAMORRO et al, 1987) + + + + (6) + Callithrix penicillata (BRANCO et al, 2012) + + -+ (3) -Saimiri sciureus (BRANCO et al, 2011) + + + + (3) -+ = present/ -= absent/ ? = not described…”

“…Another important organ of digestory apparatus is the tongue, in which, different types of functional lingual papillae (WITT; REUTTER, 1997;BRANCO et al, 2011BRANCO et al, , 2012MANÇANARES et al, 2012) KOBAYASHI, 2008). The aim of this study was describe the morphological characteristics of the tongue of K. rupestris, providing more data for future researches.…”

Morfologia das papilas linguais de coelhos Oryctolagus cuniculus (Lagomorpha: Leporidae)

“…Em um aspecto geral, a morfologia das papilas linguais já foi estudada nos coelhos (SILVA et al, 2002;GODYNICKI, 2007a;2007b;NONAKA et al, 2008), roedores (IINO; KOBAYASHI, 1988;SHINDO et al, 2006;KILINC et al, 2010), ruminantes (EERDUNCHAOLU et al, 2001;GUIMARÃES et al, 2007;MAHABADY et al, 2010), carnívoros (EMURA et al, 2004;GODYNICKI, 2004;JACKOWIAK et al, 2009) e primatas (KOBAYASHI et al, 2004BURITY et al, 2009;BRANCO et al, 2011;, no entanto, um estudo pormenorizado destas estruturas em coelhos ainda não foi realizado.…”