Control of saprolegniosis in the eel Anguilla australis Richardson, by Aeromonas media strain A199

M. J. Lategan*, F. R. Torpy, L. F. Gibson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

The probiotic activity of Aeromonas media strain A199 for the control of saprolegniosis at low water temperatures was trialled in a laboratory-based challenge using the eel, Anguilla australis Richardson. Eels were challenged in the presence of a physiological and physical stress akin to that preceding the winter outbreaks of saprolegniosis in farms. The concentration of Saprolegnia parasitica cysts was 9±1.2 cysts/ml for the initial challenge. Morbidity due to saprolegniosis was low, at 27% in A199-treated tanks, in comparison to the 44% recorded for the non-treated control tanks. The subsequent addition of live A199 cultures to the treatment tanks resulted in the recovery of fish suffering from saprolegniosis (p=0.038), with temperature appearing to be a factor regulating the effect of A199. It was concluded that A199 is a potential agent for the management of winter outbreaks of saprolegniosis in eels.

Original languageEnglish
Pages (from-to)19-27
Number of pages9
JournalAquaculture
Volume240
Issue number1-4
DOIs
Publication statusPublished - 27 Oct 2004
Externally publishedYes

Keywords

  • Aeromonas media
  • Biocontrol
  • Eel
  • Saprolegniosis

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