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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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