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OJVRTM

Online Journal of Veterinary Research©

 (Including Medical and Laboratory Research)

Established 1994
ISSN 1328-925X

 

Volume 25 (8):565-570, 2021.

Histology of digestive system in Aphanius dispar fish

 

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

 

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

 

ABSTRACT

 

Dehghani H, Parto P, Dirbaz ZB, Yousefzadi M, Haghighi ZM, Noori A., Histology of digestive system in Aphanius dispar fish, Onl J Vet Res., 25 (8):565-570, 2021. Authors describe histology of digestive tract of one of the smallest euryhaline fish- Aphanus dispar-. Ten A. dispar were collected from streams in Hormozgan, Iran, immediately fixed in 10% buffer neutral formalin for routine histology. We found that the main difference between A. dispar and other fish was absence of a stomach. The oral cavity is lined by stratified squamous epithelium with goblet cells and a small cartilage tongue. Epithelium of the pharynx consisted of ciliated pseudostratified columnar cells. The esophagus stomach was built by stratified cuboidal cells, scattered cilia and goblet cells.  The junction between esophagus and intestine appeared very distinct with abrupt epithelial changes. The intestine consisted of simple columnar to pseudostratified epithelia with no distinct boundary between small, large intestine or intestinal glands. Images are provided to support the findings.

 

Key words:Aphanius Dispar, fish, digestive tract, histology.

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