Original scientific paper

Histochemistry of complex glycoproteins in the digestive tract mucosa of Atlantic bluefin tuna (Thunnus thynnus L.)

Zvonimir Kozarić ; Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Snježana Kužir ; Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Zdravko Petrinec ; Department for Biology and Pathology of Fish and Bees, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Emil Gjurčević ; Department for Biology and Pathology of Fish and Bees, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Nikša Baturina ; County Veterinary Inspector, County of Šibenik and Knin, Croatia

Abstract

The histological structure, as well as content and distribution of glycoproteins (GPs) in the digestive tract mucosa, of the Atlantic bluefin tuna were studied. The digestive tract is short in accordance with their predatory nature and consists of the oesophagus, stomach and intestine. The short oesophagus has deep longitudinal folds and contains an abundance of secretory cells which synthesize a large quantity of neutral as well as sulphated and silylated GPs. The stomach is an elongated sac-like structure with simple tubular glands surrounded by connective tissue. The neck cells of gastric glands synthesize a mixture of neutral and acidic GPs. The intestine is short with many intestinal villi. Many goblet cells are situated between superficial epithelial cells. The intestinal goblet cells were shown to secrete both neutral and acidic GPs

Keywords

Atlantic bluefin tuna; digestive tract; histology; mucosubstances; histochemistry

Hrčak ID:

24765

URI

https://hrcak.srce.hr/24765

Publication date:

19.10.2007.

Article data in other languages: croatian

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