<b>Morphological and anatomical characterization of the digestive tract of Centropomus parallelus and <i>Centropomus undecimalis</i></b> - doi: 10.4025/actascibiolsci.v35i4.14352

  • Márcia Regina Fragoso Machado Universidade Nilton Lins
  • Helena de Oliveira Souza Universidade Federal do Rio de Janeiro
  • Valderes Lemos de Souza Fundação Oswaldo Cruz
  • Alexandre de Azevedo Universidade Federal do Rio de Janeiro
  • Roberto Goitein Instituto de Biociências da Univesidade Estadual Paulista (Unesp), Rio Claro – São Paulo
  • André Dias Nobre Universidade Nilton Lins
Palavras-chave: Digestive tract, feeding habits, histology, Centropomus

Resumo

Centropomus parallelus and Centropomus undecimalis are the most common species of Centropomidae in Brazil. Some authors attribute their failure to grow under in artificial conditions due to limited knowledge on the morphological and functional development of their digestive system and on nutrition requirements of both species. Current research characterizes histologically and histochemically the digestive tract of Centropomus parallelus and Centropomus undecimalis to provide a histophysiological assessment for studies related to their nutritional needs. In the esophagus, the mucous cells in the epithelium stained positively for PAS and AB. In the stomach, positive reactions to PAS and negative to AB respectively occurred on surface and mucous cells in the epithelium and in the lamina propria. In the intestine, goblet cells showed ratio similarity, with mucus being positive in AB and PAS. A greater concentration of these cells existed in the middle and distal intestine, with a greater increase of secretions when compared to those in the proximal intestine. Results show that Centropomus parallelus and Centropomus undecimalis display the main features of the digestive tract of carnivorous fish, a well-developed stomach and a relatively short intestine. In fact, they give insights for future studies on the mechanisms related to the species´s digestive and absorptive physiology.

 

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Biografia do Autor

Márcia Regina Fragoso Machado, Universidade Nilton Lins
Dra. em Aquicultura
Helena de Oliveira Souza, Universidade Federal do Rio de Janeiro
Acadêmica do curso de Biologia do Núcleo de Pesquisa em Ecologia e Desenvolvimento Sócio Ambiental de Macaé (NUPEM), Universidade Federal do Rio de Janeiro (UFRJ), Macaé – RJ/Brasil.
Valderes Lemos de Souza, Fundação Oswaldo Cruz
Laboratorista da Fundação Oswaldo Cruz - FIOCRUZ, Salvador – BA
Alexandre de Azevedo, Universidade Federal do Rio de Janeiro
Prof. Dr. do curso de Biologia do Núcleo de Pesquisa em Ecologia e Desenvolvimento Sócio Ambiental de Macaé (NUPEM), Universidade Federal do Rio de Janeiro (UFRJ), Macaé – RJ/Brasil.
Roberto Goitein, Instituto de Biociências da Univesidade Estadual Paulista (Unesp), Rio Claro – São Paulo
Prof. Dr. do Instituto de Biociências da Univesidade Estadual Paulista (Unesp), Rio Claro – São Paulo
Publicado
2013-07-04
Como Citar
Machado, M. R. F., Souza, H. de O., Souza, V. L. de, Azevedo, A. de, Goitein, R., & Nobre, A. D. (2013). <b>Morphological and anatomical characterization of the digestive tract of Centropomus parallelus and <i>Centropomus undecimalis</i></b&gt; - doi: 10.4025/actascibiolsci.v35i4.14352. Acta Scientiarum. Biological Sciences, 35(4), 467-474. https://doi.org/10.4025/actascibiolsci.v35i4.14352
Seção
Aquicultura e Recursos Pesqueiros

 

0.6
2019CiteScore
 
 
31st percentile
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus