First report of Plesiomonas shigelloides as opportunistic pathogen in tilapia Oreochromis niloticus (Linnaeus, 1758) in a fish farm in Lima, Peru

Authors

  • Verónica Sierralta Chichizola Laboratorio de Ecología Microbiana, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima
  • Egma Mayta Huatuco Laboratorio de Virología Clínica Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima
  • Jorge León Quispe Laboratorio de Ecología Microbiana, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima

DOI:

https://doi.org/10.15381/rivep.v27i3.11996

Keywords:

aquaculture, fish pathology, tilapia, Plesiomonas shigelloides, Peru

Abstract

The presence of Plesiomonas shigelloides causing enteric disease in tilapia Oreochromis niloticus in a fish farm in Lima region, Peru is reported. The bacteria were isolated and identified as Plesiomonas shigelloides by conventional biochemical techniques and confirmed by the API 20NE system (numerical profile 7162744 that ratifies 99.3% P. shigelloides). Strains evaluated (n=4) had a fermentative metabolism of glucose, test positive to cytochrome oxidase, indole, Voges-Proskauer and methyl red. The most frequent external signs were erythema in abdomen and pectoral fins, and prominent and reddened anus with bloody discharge. Internally, ascites in visceral cavity and gut inflammation were detected. Histopathology studies revealed edema of the lamina propia and epithelial necrosis of gastric and intestinal tissue, and necrosis in anterior kidney and gonad.

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Published

2016-10-01

Issue

Vol. 27 No. 3 (2016)

Section

Artículos Primarios

License

Copyright (c) 2016 Verónica Sierralta Chichizola, Egma Mayta Huatuco, Jorge León Quispe

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How to Cite

Sierralta Chichizola, V., Mayta Huatuco, E., & León Quispe, J. (2016). First report of Plesiomonas shigelloides as opportunistic pathogen in tilapia Oreochromis niloticus (Linnaeus, 1758) in a fish farm in Lima, Peru. Revista De Investigaciones Veterinarias Del Perú, 27(3), 565-572. https://doi.org/10.15381/rivep.v27i3.11996