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Year 2010 - Volume 30, Number 8
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Morphology of the digestive tube of the green turtle (Chelonia mydas), 30(8):676-684
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ABSTRACT.- Magalhães M.S., Freitas M.L., Silva N.B. & Moura C.E.B. 2010. [Morphology of the digestive tube of the green turtle (Chelonia mydas).] Morfologia do tubo digestório da tartaruga verde (Chelonia mydas). Pesquisa Veterinária Brasileira 30(8):676-684. Pós-Graduação em Biologia de Água Doce e Pesca Interior, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Cx. Postal 478, Aleixo, Manaus, AM 69011-970, Brazil. E-mail: marcelasmbio@gmail.com
The morphology of the digestive tube of the green turtle (Chelonia mydas) was evaluated. Nine young e 1 adult turtles were analyzed. The digestive organs withdrew occurred after plastron opening. The length’s description and measurement from each organ [esophagus, stomach, small intestine (SI) and large intestine (LI)] were made with digestive tube opened. The results showed that in both the adult and young animals, the esophagus from all species were marked by the presence of pointed papillae on internal mucous. The stomach presented saclike shape with blind fund. In the SI, reticular pleats in the duodenal mucous membrane have been observed, while the jejune and the ileum showed rectilinear longitudinal pleats. The LI was marked by the alternation of arched areas (haustra or sacculations) and narrowings. The microscopy of digestive tube from C. mydas revealed esophagus with folded mucous covered by keratinized and stratified squamous epitheliums. The stomach was divided in regions: cardiac, fundic e pyloric which differed as to the number of glands and the muscle layer’s arrangement. The SI presented marked by microvillus, and LI by folded mucous with glands the lamina propria. The morphology of the tube digestive of the green turtle showed to be adapted to your eating habits. A long the digestive tract and specializations provide greater area of absorption and more efficiency in digestion in this species. |
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