Histologia do trato digestório do surubim-pintado (Pseudoplatystoma coruscans - Agassiz, 1829)

Cal, Josy Alvarenga

doi:10.11606/d.10.2006.tde-01032007-180235

Cited by 8 publications

(10 citation statements)

References 63 publications

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“…There is some variation among the regions in regard to the depth of the pits and the number of glands, similar to that described for other vertebrates (George and Castro, 1998) including Green Sea Turtles (Chelonia mydas; Magalhães et al, 2010). The mucus probably protects the epithelial cells from the hydrochloric acid produced by the gastric glands and assists the movement of food from the stomach to the SI (Silva, 2004;Cal, 2006). Parsons and Cameron (1977) noted that some species of turtles have longitudinal folds in the gastric mucous.…”

Section: Discussionsupporting

confidence: 59%

“…Because of the absence of glands in the cardiac and fundic regions, secretory activity is restricted to superficial cells and goblet cells. The secretion of mucus by these cells protects the stomach epithelium and moistens the food items (Silva, 2004;Cal, 2006). The pyloric region contains gastric pits and gastric glands.…”

Section: Discussionmentioning

confidence: 99%

“…Histologically, the LI of the species studied has more goblet cells than the SI; this is an important difference because the mucus secreted by the goblet cells helps to lubricate the digestive tube and facilitates the movement of feces (George and Castro, 1998;Cal, 2006). In C. mydas, the large intestine has tubular glands and an accumulation of lymphocytes in the lamina propria (Magalhães et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

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Morphology of the Digestive Tube of the Podocnemididae in the Brazilian Amazon

et al. 2014

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Section: Discussionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Morphology of the Digestive Tube of the Podocnemididae in the Brazilian Amazon

et al. 2014

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“…This pattern is similar to that of the lampreys, which are fish without stomach, where the esophagus is directly connected to the intestine [13]. In small and omnivorous species such as, Roeboides xenodon, Orthospinus franciscensis [14], and also in Pseudoplatystoma corruscans [15] the esophagus is short and this portion of the digestive tract does not offer obstacle to the passage of food, similar to the observation in the study species. Similarly, marine carnivorous fish of the family Lutjanidae, such as, Lutjanus synagris, Lutjanus purpureus and Ocyurus chrysurus have short esophagus and this organ is only associated with the passage of food [16].…”

Section: Discussionsupporting

confidence: 85%

“…This pattern of organization of simple columnar epithelium throughout the intestine of A. urophthalmus reveals an intensely absorbing surface, which is important for the process of absorption of nutrients [15,27]. In Cyclostome fish without stomach, the essential biochemical processes of digestion occur due to enzymatic activity of the pancreas or mucosa of the intestine [28].…”

Section: Discussionmentioning

confidence: 99%

Histology of the Digestive Tract of Anablepsoides urophthalmus from Brazilian Oriental Amazonia

Chellappa¹

2018

JAMB

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This study investigated the anatomy and histology of the digestive tract of the fish Anablepsoides urophthalmus of the family of Rivulidae, captured from the flood plains of northern Brazil. Histology of the digestive tract of this species was investigated, since there is a scarcity of information regarding its digestive biology. This work describes the histological characterization of the digestive tract of A. urophthalmus and correlates the histology of each component with its respective function. This species has only esophagus and intestine and it was possible to identify these components through histological analysis of the mucosa, submucosa, muscular and serous layers. The esophagus is short, with stratified epithelium, cubic with mucous cells and with a muscle layer with two sub-layers of striated muscle fibers. The intestine is coated with simple cylindrical columnar epithelium with microvilli goblet cells. It is divided into anterior, middle and posterior portions, without any folding or glands. The differentiation of regions of the intestine occurs at the level of the intestinal mucosa at the villus and variations of goblet cells.

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Distribution of goblet and endocrine cells in the intestine: A comparative study in Amazonian freshwater Tambaqui and hybrid catfish

Pereira

Nebo

Naves

et al. 2019

Journal of Morphology

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Goblet cells (GCs) and endocrine cells (ECs) play an important role in intestine physiology, and few studies currently exist for Amazonian fishes. This study aimed to quantify the distribution of GCs and ECs producing cholecystokinin‐8 and neuropeptide Y, assessed by mucin histochemistry and peptides immunohistochemistry, in the intestine of two Amazonian species with different feeding habits Tambaqui (Colossosoma macropomum) and hybrid catfish (Pseudoplatystoma reticulatum × Leiarius marmoratus), an omnivore and carnivore, respectively. A systematic literature review correlating feeding habit and GC and EC distribution was also included to contribute to the comparative study. The results of this study provided novel information about the gut cells of Tambaqui and hybrid catfish. Both, GCs and ECs can be found sweeping the entire intestine of Tambaqui and hybrid catfish although the cells can be more concentrated in certain segments. The GCs and ECs in Tambaqui were more uniformly distributed in the midgut segments (T1, T2, and T3). Unlike, in hybrid catfish GCs were more concentrated in the hindgut (C4) and ECs mainly in the two midgut segments (C1 and C2) of hybrid catfish. Based on the comparison between Tambaqui, hybrid catfish, and other fishes in the literature review, we suggest that cell distribution can be partially explained by feeding habits, carnivorous vs. omnivorous.

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Histologia do trato digestório do surubim-pintado (Pseudoplatystoma coruscans - Agassiz, 1829)

Cited by 8 publications

References 63 publications

Morphology of the Digestive Tube of the Podocnemididae in the Brazilian Amazon

Morphology of the Digestive Tube of the Podocnemididae in the Brazilian Amazon

Histology of the Digestive Tract of Anablepsoides urophthalmus from Brazilian Oriental Amazonia

Distribution of goblet and endocrine cells in the intestine: A comparative study in Amazonian freshwater Tambaqui and hybrid catfish

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