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Arquivos do Instituto Biológico

On-line version ISSN 1808-1657

Abstract

OLINDA, Roberio Gomes; FEIJO, Francisco Marlon Carneiro; BATISTA, Jael Soares  and  LIMA, José Ticiano Arruda Ximenes de. Isolation of Alcaligenes faecalis in fish Betta splendens Regan, 1910 in Brazil. Arq. Inst. Biol. [online]. 2014, vol.81, n.4, pp.360-362. ISSN 1808-1657.  https://doi.org/10.1590/1808-1657000312013.

This paper aimed to describe one case of infection by Alcaligenes faecalis in an ornamental fish Betta splendens, including clinical, pathological, and bacteriological evaluation. A female fish weighing 16 g initially showed discrete ulcerative lesions in the integument, inappetence, progressive weight loss, lethargy, dyspnea, and increased volume in the left lateral region. Necropsy revealed bilateral exophthalmia, corneal opacity, ascites, and subcutaneous abscess causing distension of the celomatic cavity. Histological changes of the skin were characterized by abscess, necrosis, hemorrhage, and inflammatory infiltrate consisting mainly of heterophils. Microbiological assays using the exudates and venous blood isolated exclusively A. faecalis.

Keywords : Alcaligenes faecalis; bacterial infection; ornamental fish; pathology.

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