The impact of allochthonous fish skin secretions on the Erysipelothrix rhusiopathiae pathogenic bacteria

  • O. Нulaі -
  • О. Zhukorskyi -
  • V. Нulaі -
  • N. Tkachuk -
Keywords: Erysipelothrix rhusiopathiae, fish skin secretions, a stimulating effect

Abstract

Aim. To fi nd out the impact of allochthonous fi sh skin secretions on the E. rhusiopathiae pathogenic bacteria cultures. Methods. The skin of live fi shes was covered with fi lter paper, which was removed after 1 minute; then soluble components at the rate of 0.1 cm 3 of water per 1.0 cm 2 of paper area were extracted. The resulting solutions of fi sh skin secretions were sterilized by vacuum fi ltration through fi lters with < 0.2 μm pore diam- eter. The test samples contained E. rhusiopathiae cultures and fi sh skin secretions in dilutions of 1:10, 1:100, 1:1,000 and 1:10,000. The control samples contained a similar ratio of sterilewater and the bacteria under study. Results. The presence of freshwater fi sh skin secretions in water-soluble extracts causes the increase in E. rhusiopathiae culture density. The intensity of the revealed stimulation effect on E. rhusiopathiae depends on the concentration of fi sh skin secretions in test samples. Conclusions. Freshwater fi sh (Hypophthalmichthys molitrix, Ctenopharyngodon idella) skin secretions contain substances that exert a stimulating effect on the E. rhusiopathiae culture. The ability of the bacteria under study to use fi sh skin secretions indicates the formation of interspecifi c trophic links. To prevent and eliminate the foci of infection caused by E. rhusiopathiae, one has to consider the possibility of the pathogenic bacteria persistence on the skin of freshwater fish.
Published
2015-12-15
How to Cite
НulaіO., ZhukorskyiО., НulaіV., & Tkachuk, N. (2015). The impact of allochthonous fish skin secretions on the Erysipelothrix rhusiopathiae pathogenic bacteria. Agricultural Science and Practice, 2(3), 22-25. https://doi.org/10.15407/agrisp2.03.022