Control of Bacteria in Nondomestic Water Supplies

Chambers, C.; Clarke, Norman A.

doi:10.1016/s0065-2164(08)70494-5

Cited by 16 publications

(2 citation statements)

References 92 publications

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“…Barnet (5) found that the presence of bacteriophages increases the proportion of phage-resistant R. trifolii in the root zone of clover and increases the proportion of phage-resistant mutants that are not effective in nodulation. However, the studies by Carlucci and Pramer (6), Pretorius (18), and Chambers and Clarke (7) suggest that bacteriophages are not responsible for the decline of coliforms or Vibrio cholerae in marine water, sewage, and freshwater. Similarly, Habte and Alexander (12) concluded that bacteriophages are not responsible for the decline of Xanthomonas campestris in soil.…”

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confidence: 99%

Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems

Wiggins¹,

Alexander²

1985

Appl Environ Microbiol

243

110

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Bacteriophage 80a did not increase in number in cultures containing less than about 1.0 x 104 to 1.5 x 104 CFU of Staphylococcus aureus per ml, but bacteriophage replication did occur when the number of bacteria exceeded this density, either initially or as a result of host cell multiplication. The minimum density of an asporogenous strain of Bacillus subtilis required for an increase in the number of bacteriophage SP, cI was about 3 x 104 CFU/ml. The threshold density of Escherichia coli for the multiplication of bacteriophage T4 was about 7 x 103 CFU/ml. In the presence of montmorillonite, bacteriophage T4 did not increase in number until the E. coli population exceeded 104 CFU/ml. The mineralization of glucose was not affected in E. coli cultures inoculated with a low number of bacteriophage T4, but it could not be detected in cultures inoculated with a large number of phage. The numbers of bacteriophage T4 and a bacteriophage that lyses Pseudomonas putida declined rapidly after being added to lake water or sewage. We suggest that bacteriophages do not affect the number or activity of bacteria in environments where the density of the host species is below the host cell threshold of about 104 CFU/ml.

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confidence: 99%

Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems

Wiggins¹,

Alexander²

1985

Appl Environ Microbiol

243

110

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“…Water inundating beaches on peak flows drains through beach sands as the stream flow ebbs. This inundation-drainage process possibly allows sand filtration of FC from the water column much like that which occurs in water treatment facilities (9,26). FC have been found to persist in moist Colorado River beach sands for several days to weeks (29).…”

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confidence: 99%

Recreational water quality analyses of the Colorado River corridor in Grand Canyon

Tunnicliff¹

1984

Appl Environ Microbiol

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We intensively examined the recreational water quality of the Colorado River and 26 tributaries in Grand Canyon National Park over four consecutive summers. Highly ephemeral precipitation cycles and arid watershed hydrologies were the principal factors influencing water quality. Fecal coliforms (FC) in the river and in most tributaries were '10 FC 100 ml-' and s20 FC 100 ml-', respectively, during drought cycles. During rainfall cycles, FC densities were highly variable and often exceeded recreational contact standards. FC were not found to vary significantly in response to diurnal fluctuations in river stage height which resulted from hydroelectric stream flow regulation. River and tributary bottom sediments harbored FC in densities averaging 10 to 100 times those in the overlying waters. Sediment FC densities were not found to be reliable indicators of overlying water quality when storm flow and nonstorm flow periods were compared.

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Ecology of Microorganisms as it affects the Pharmaceutical Industry

Underwood¹

2004

Hugo and Russell's Pharmaceutical Microbiology

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Control of Bacteria in Nondomestic Water Supplies

Cited by 16 publications

References 92 publications

Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems

Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems

Recreational water quality analyses of the Colorado River corridor in Grand Canyon

Ecology of Microorganisms as it affects the Pharmaceutical Industry

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