Morphological tongue and palate characterizations in Trachemys adiutrix (Vanzolini, 1995) turtles

Author:

Ferraz Rafaella Sousa12ORCID,Corrêa Lukas Allayn Diniz1ORCID,Calvet Margareth Cavalcante Ribeiro1,Santiago Paula Maria Mesquita3ORCID,da Silva Teófilo Tiago4ORCID,de Oliveira Radan Elvis Matias5ORCID,Martins Adriano Luis6ORCID,Barreto Larissa Nascimento1,Silva Melaine Mont’Alverne Lawall1ORCID

Affiliation:

1. Biological Sciences and Health Center Federal University of Maranhão São Luís‐ MA Brazil

2. Nucleus of Oncology Research Federal University of Pará Belém‐PA Brazil

3. Federal Institute of Education Science and Technology of Maranhão São Luís‐MA Brazil

4. Department of Biosciences, Biological and Health Sciences Center Federal University of the Semi‐Arid Region Mossoró‐RN Brazil

5. Applied Animal Morphophysiology Laboratory (LABMORFA), Department of Animal Sciences Federal University of the Semi‐Arid Region Mossoró‐RN Brazil

6. State University of Campinas School of Dentistry Piracicaba‐SP Brazil

Abstract

AbstractMorphological studies on the oropharyngeal cavity of turtles are an interesting tool in understanding evolutionary processes associated with feeding habits. There is paucity of morphological information on the oropharyngeal cavity of the Trachemys adiutrix turtle. Thus, the aim of this study was to describe the tongue and palate morphology of T. adiutrix to establish a standard model for the species, providing information that may improve knowledge on the species feeding habits. Gross dissection, light microscopy and scanning electron microscopy assessments of 11 specimens were carried out. The tongue of T. adiutrix is triangular with a slightly rounded apex and broad base and lingual papillae widely distributed throughout the entire dorsal surface. The palate is composed of bony structures, displaying a triangular apex with one pair of choanae and palatine raphe that begin in the middle region, dividing the two openings. The body was elongated and smooth. The root was wrinkled and opened into the oesophagus. The tongue was lined by non‐keratinized stratified squamous epithelium, rich in mucous cells and a large number of different‐shaped papillae and taste buds. The palate was mainly lined by a pseudostratified cylindrical ciliated epithelium rich in mucous cells. In conclusion, the tongue and palate characteristics of T. adiutrix include evidence that these animals are semiaquatic, displaying morphological characteristics associated with aquatic and terrestrial trophic ecology, similar to that observed in other semiaquatic and terrestrial chelonian species.

Publisher

Wiley

Subject

General Veterinary,General Medicine

Reference40 articles.

1. Reassessment of the phylogenetic interrelationships of basal turtles (Testudinata)

2. Roteiro para Inventários e Monitoramentos de Quelônios Continentais;Balestra R. A.;BioBrasil,2016

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