Antagonistic activity of Aeromonas media strain A199 against Saprolegnia sp., an opportunistic pathogen of the eel, Anguilla australis Richardson

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

*Corresponding author for this work

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A bacteriocin-like inhibitory substance (BLIS) produced by Aeromonas media strain A199 inhibited the growth of Saprolegnia sp. in vitro, an opportunistic pathogen isolated from affected eels, Anguilla australis (Richardson). The presence of BLIS in solid media inhibited the growth of the vegetative state of the aquatic mould as well as the germination of cysts. Uninhibited growth was, however, observed in the presence of inactive BLIS, suggesting that the in vitro antagonism derived from the BLIS of A199. In four independent in vivo tank observations of fish affected with saprolegniosis, the daily addition of A199 to tank water contributed to the subsequent swift recovery of affected hosts from invasion by this opportunistic pathogen.

Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalJournal of Fish Diseases
Volume26
Issue number3
DOIs
Publication statusPublished - 1 Mar 2003
Externally publishedYes

Keywords

  • Aeromonas media
  • Anguilla australis
  • Antagonism
  • Saprolegnia

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