Descrição histológica de segmentos do tubo digestório do pirarucu (Arapaima gigas) proveniente de produção comercial

Keisyara Bonfim dos  Santos; Ranusce de Santis Pieta; Hudson Piauilino de Figueiredo  Cunha; Neurimar  Araujo da  Silva; Guilherme José Bolzani de Campos Ferreira

doi:10.5433/1679-0359.2024v45n3p855

Authors

Keisyara Bonfim dos Santos Universidade Federal do Piauí
Ranusce de Santis Pieta Universidade Federal do Vale do São Francisco
Hudson Piauilino de Figueiredo Cunha Universidade Federal do Vale do São Francisco https://orcid.org/0000-0001-7425-4335
Neurimar Araujo da Silva Universidade Federal do Piauí https://orcid.org/0009-0000-6960-8063
Guilherme José Bolzani de Campos Ferreira Universidade Federal do Piauí https://orcid.org/0000-0001-6308-5951

DOI:

https://doi.org/10.5433/1679-0359.2024v45n3p855

Keywords:

Microscopic anatomy, Fish farming, Teleost.

Abstract

The aim of this study was to histologically characterize portions of the digestive tract (esophagus, stomach, pyloric caeca and intestine) of 10 juvenile pirarucu (Arapaima gigas), with an average weight of 3.45 kg ±0.67, captured at fish farms. Histological processing was performed in line with the methods proposed by the UFPI/CPCE Animal Anatomy Laboratory. The sections were analyzed under a trinocular biological microscope (Nova®). The structural composition of the organs was recorded via photomicrographs, using a five-megapixel digital camera coupled to a microscope, with Toupview® capture software. The muscular layer of the mucosa was not observed in the medial segment of the esophagus. Gastric glands were observed in the medial region of the stomach body, in the lamina propria of the mucosa and tunica muscularis, with considerable thickness. The histological characteristics of the pyloric caeca were similar to those of the first segments of the Pirarucu midgut, with apparent variation in the thickness of the mucosal folds, submucosa and tunica muscularis according to organ diameter. Intestinal fold organization and goblet cell distribution varied along the digestive tract. Histologically, the organs of the Pirarucu digestive tract exhibited characteristics similar to those of other carnivorous teleosts.

Author Biographies

Keisyara Bonfim dos Santos , Universidade Federal do Piauí

M.e in Postgraduate Program in Zootechnics, Universidade Federal do Piauí, UFPI, Bom Jesus, PI, Brazil.

Ranusce de Santis Pieta, Universidade Federal do Vale do São Francisco

Dr. in postgraduate Program in Veterinary Sciences in the Semi-Arid Region, Universidade Federal do Vale do São Francisco, UNIVASF, Petrolina, PE, Brazil.

Hudson Piauilino de Figueiredo Cunha, Universidade Federal do Vale do São Francisco

Dr. in Postgraduate Program In Veterinary Sciences In the Semi-Arid Region, UNIVASF, Petrolina, PE, Brazil.

Neurimar Araujo da Silva, Universidade Federal do Piauí

M.e in Postgraduate Program in Zootechnics, UFPI, Bom Jesus, PI, Brazil.

Guilherme José Bolzani de Campos Ferreira, Universidade Federal do Piauí

Prof. Dr., Department Morphology and Morphometry of Domestic and Wild Animals and New Technologies Applied to Veterinary Medicine, UFPI, Bom Jesus, PI, Brazil.

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