Some characteristics of fluorescent pseudomonads isolated from surface waters and capable of growth at 41C

The occurrence in surface waters of fluorescent pseudomonads other than Pseudomonas aeruginosa which are capable of growth at 41C is reported. Among 29 isolates subjected to selected tests, some strains were clearly distinguishable from P. aeruginosa while others possessed characteristics in common with both P. aeruginosa and certain non-fluorescent aerobic pseudomonads. The pathogenicity to mice of representative strains injected intraperitoneally varied within a range reported in the literature for P. aeruginosa, but differed by at least one order of magnitude from that of a control strain of P. aeruginosa examined.