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OJVRTM

Online Journal of Veterinary Research©

Volume 20(3):141-147, 2016.


 

Microscopy of digestive tract of euryhaline fish Aphanius dispar

 

Hadi Dehghani1, Paria Parto2, Zahra Bagheri Dirbaz1, Morteza Yousefzadi1, Zahra Minoosh Haghighi3, Ahmad Noori1

 

1Biology Department, School of Marine Science and Technology, Hormozgan University, Bandarabass, 2Biology Department, Faculty of Science, Razi  University, Kermanshah, 3Pathology Department, School of Veterinary Medicine, Razi  University, Kermanshah, Iran

ABSTRACT

 

Dehghani H, Parto P, Bagheri Dirbaz Z, Yousefzadi M, Minoosh Haghighi Z, Noori  A., Microscopy of digestive tract of euryhaline fish Aphanius dispar, Onl J Vet Res., 20(3):141-147, 2016. Microscopical features of digestive tract of killi euryhaline fishes Aphanus dispar (cyprinodontidae) are described. Ten samples of A. dispar were collected from streams in Hormozgan and fixed in 10% buffer neutral formalin for examination. A main difference between A. dispar and other fish was the absence of a stomach. Oral cavities were lined by stratified squamous epithelium with goblet cells and a small cartilagenous tongue. Epithelia of pharynx were ciliated pseudostratified columnar whereas esophageal stomach had stratified coboidal epithelium with scattered cilia and goblet cells. The junction between esophagus and intestine appeared very distinct. Intestines were covered by simple columnar to pseudostratified layers with no distinct boundary between small and large intestine or intestinal glands. Microphotographs  of these structures are provided.

 

Key-words: Microscopy, Euryhaline fish, Aphanius dispar.


 

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