PMID: 16348096Jan 1, 1990

Efficiencies of recovery of bdellovibrios from brackish- water environments by using various bacterial species as prey

Applied and Environmental Microbiology
A J Schoeffield, Henry N Williams


A total of 44 bacterial species subdivided into 10 trial experiments have been used as prey for the recovery of bdellovibrios from samples of water from a brackish tidal pond and an aquarium saltwater tank. In an initial investigation, the recovery efficiency of each of the test bacterial species was compared with that of a designated standard prey, Vibrio parahaemolyticus P-5. The results revealed that in each case strain P-5 yielded an equal or significantly greater number of plaques of bdellovibrios than the test prey with but a single exception, strain CS5. In repeat experiments, CS5 yielded fewer plaques than P-5. To determine whether the use of multiple bacterial species compared with a single species as prey would increase the number of PFU of bdellovibrios recovered, material from plaques appearing on each of the test prey in the respective trials was sequentially subcultured onto two respective agar plates, the first containing as prey V. parahaemolyticus P-5 and the second containing the initial test organism. In nearly every case, subculture of plaques from lawns of the test prey to P-5 resulted in plaque formation. On the basis of the results, the use of several test prey and P-5 did not result in the recovery of an...Continue Reading


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