alexa Ultrastructural Study of the Alimentary Tract of Two Reptilian Species the Lizard Scincus scincus and the Snake Natrix tessellata
ISSN: 2157-7099

Journal of Cytology & Histology
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Research Article

Ultrastructural Study of the Alimentary Tract of Two Reptilian Species the Lizard Scincus scincus and the Snake Natrix tessellata

Rasha E Abo-Eleneen1, Ahlam M El- Bakry1* and Ahmed M Abdeen2

1Department of Zoology- Faculty of Science, Beni-Suef University, Egypt

2Department of Zoology- Faculty of Science- Mansoura University, Egypt

*Corresponding Author:
Ahlam M. El-Bakry
Department of Zoology-Faculty of Science
Beni-Suef University, Egypt
Tel: 01282812572
E-mail: [email protected]

Received Date: November 08, 2012; Accepted Date: December 17, 2012; Published Date: December 19, 2012

Received Date: September 24, 2014; Accepted Date: October 27, 2014; Published Date: October 29, 20142

Citation: Abo-Eleneen RE, El- Bakry AM, Abdeen AM (2014) Ultrastructural Study of the Alimentary Tract of Two Reptilian Species the Lizard Scincus scincus and the Snake Natrix tessellata. J Cytol Histol S4:010. doi:10.4172/2157-7099.S4-010

Copyright: © 2014 Abo-Eleneen RE, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The ultrastructural difference of the alimentary tract of the insectivore, Scincus scincus and the carnivore, Natrix tesstellata was described by using scanning and transmission electron microscopy. The oesophagus of S. scincus with many prominent longitudinal folds while in N. tessellata it has many primary longitudinal folds and secondary ramification. The oesophageal epithelium of both species has numerous goblet cells. The mucosal epithelial cells in both species contain large nucleus, endoplasmic reticulum, lysosomes and some vacuoles. Stomach had a meshwork of primary folds in S. scincus and it forms various folds forming many discrete, irregular pockets in N. tessellata. The mucosal cells in the stomach of S. scincus have many secretory granules while in N. tessellate it provided with numerous mucinogen granules in the gastric columnar cells. In S. scincus, the intestinal mucosa with many primary folds but it appeared as longitudinal secondary mucosal folds in Zig-Zag pattern enclosing a number of concavities in N. tessellata. The intestinal mucosal cells in both species consisted of regularly formed microvilli. There were numerous goblet cells in the intestine of both species. In conclusion, structural variation of the alimentary tract in the two species examined was related to difference in feeding habits.

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