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Comparative analysis of the small and large intestines of Acará Geophagus brasiliensis (Quoy & Gaimard, 1824) (Pisces: Cichlidae).
Chaves, Ana Paula Gorle de Miranda; Oliveira, Maurício Gustavo; Paschoalini, Alessandro Loureiro; Bazzoli, Nilo; Santos, José Enemir Dos.
Afiliación
  • Chaves APGM; Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.
  • Oliveira MG; Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.
  • Paschoalini AL; Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.
  • Bazzoli N; Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.
  • Santos JED; Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil.
Anat Histol Embryol ; 51(1): 79-84, 2022 Jan.
Article en En | MEDLINE | ID: mdl-34792205
Geophagus brasiliensis, popularly known as acará, is a common fish in lentic freshwater environments in South America. This species has a detritivorous-iliophagous or omnivorous feeding habit, with high food plasticity; however, there are no studies describing its intestinal tract histologically. Therefore, the present study analysed through histological and histochemical techniques the intestines of the acará. Adult specimens were collected with gillnets, anaesthetized and euthanized. Then, the fish were submitted to biometry and dissection to remove fragments of intestines. The samples were fixed in Bouin liquid for 12 hours and subjected to histological and histochemical techniques. Histologically, all samples of intestines were organized into four layers: mucosa, submucosa, muscular and serosa. The small intestine (foregut and midgut) was characterized by the presence of intestinal villi covered by simple prismatic epithelium with a striated border and goblet cells supported by the connective lamina propria. In the large intestine (hindgut), there was an absence of villi and an abundance of goblet cells. Positive reaction to Periodic Acid-Schiff (PAS) and Alcian Blue (AB) pH 2.5 reactions were detected in goblet cells, indicating the presence of mucosubstances. No lipids were detected in the intestine cells due to the negative reaction to the Sudan Black B. The results of the present study provide subsidies for a better understanding of the intestinal morphology of teleosts and provide valuable information for phylogenetic studies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cíclidos Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Anat Histol Embryol Año: 2022 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cíclidos Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Anat Histol Embryol Año: 2022 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania