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A Morphological and Ultrastructural Study of the Anterior Digestive Tract of Adult Nile Tilapia . | LitMetric

AI Article Synopsis

  • Nile tilapia is a popular fish in aquaculture due to its fast growth and ability to thrive in various farming environments.
  • A detailed study of its digestive tract, especially the esophagus and stomach, identifies five distinct zones and highlights important structural features.
  • Histochemical analysis indicates that mucins in the digestive tract protect the epithelial lining, which is crucial for digestion, and may lead to further research on specific molecules like neuropeptides that influence this process.

Article Abstract

Among the most-used fish species in aquaculture is the Nile tilapia, due to its rapid growth rate and its adaptation to a wide range of farming conditions. A careful description of the morphology of the digestive tract, particularly the esophagus and stomach, allows a better understanding of the relationship between structure and function. Combining scanning and light microscopy we highlighted the presence of five different zones in the stomach (1: esophagus-gastric lumen passage; 2: descending glandular portion; 3: fundic portion; 4: ascending glandular portion; 5: gastric-pyloric transition portion). Histochemical investigation showed a secretion of carboxylates mucopolysaccharides along the esophagus and sulphated complex carbohydrates in the stomach. These results suggest that mucins play a protective role of the epithelial lining, which is essential for a correct digestive process. Finally, the characterization of the main cellular structures may be inspiring for more advanced studies aiming to decipher the role of specific molecules, such as neuropeptides, involved in the physiological digestive process.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9913172PMC
http://dx.doi.org/10.3390/ani13030420DOI Listing

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