Histology and Ultrastructure of the Gut of the Tilapia (Tilapia spp.), a Hybrid Teleost

Summary The morphology of the intestine has been studied in a species of warm water fish, Tilapia spp., a hybrid teleost of notable economic importance. Light and electron microscope results show that the intestine is a relatively undifferentiated muscular tube lined with a simple columnar epitheliu...

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Bibliographic Details
Published in:Anatomia, histologia, embryologia histologia, embryologia, 1998-04, Vol.27 (2), p.89-94
Main Authors: Gargiulo, A. M., Ceccarelli, P., Dall'Aglio, C., Pedini, V.
Format: Article
Language:English
Subjects:
Animals
Female
Intestinal Mucosa - cytology
Intestinal Mucosa - ultrastructure
Intestines - cytology
Intestines - ultrastructure
Male
Tilapia - anatomy & histology
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Summary:Summary The morphology of the intestine has been studied in a species of warm water fish, Tilapia spp., a hybrid teleost of notable economic importance. Light and electron microscope results show that the intestine is a relatively undifferentiated muscular tube lined with a simple columnar epithelium interspersed with goblet cells. The proximal region has a greater surface area, manifested by elongated mucosal ridges. The enterocytes are covered apically with uniform microvilli and exhibit the typical ultrastructural features of pinocytosis, namely extensive invaginations of the luminal plasma membrane and massive accumulation of vesicles in the apical cytoplasm. The distal intestine mucosa is thinner and less elaborately folded and consists of columnar cells with shorter and sparser microvilli. Their supranuclear cytoplasm contains abundant clear vacuoles. Numerous endocrine cells can also be seen. Regional cellular ultrastructural features are correlated with digestive functions.
ISSN:0340-2096
1439-0264
DOI:10.1111/j.1439-0264.1998.tb00162.x