Systemic Granulomatosis in Guppies Poecilia reticulata

  • Nontawith Areechon Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
  • Nantarika Chansue Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
  • Aranya Ponpornpisit Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
  • Terutoyo Yoshida Faculty of Agriculture, Miyazaki University, Miyazaki, 889-2192, Japan
  • Makoto Endo Faculty of Agriculture, Miyazaki University, Miyazaki, 889-2192, Japan
Keywords: guppy, granuloma, acid-fastness bacterium, histopathology

Abstract

In many guppy Poecilia reticulata farms in the vicinity of Bangkok, diseases have caused longlasting fish death and consequently large cumulative mortality. Diseased guppies were collected and subjected to histopathological analysis. The analysis revealed systemic granulomatosis as a remarkable histological sign. Rod-shaped bacterial cells with strong acid-fastness were found in the granulomas. Therefore, this disease was diagnosed as acid-fastness bacterial infection. The acid-fastness bacterium infection seems to predispose various infections in the critical stage of the disease.

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Published
2001-12-31
Section
Research Article