Journal ArticleDOI
High abundance of viruses found in aquatic environments.
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TLDR
Using a new method for quantitative enumeration, up to 2.5 x IO8 virus particles per millilitre in natural waters indicate that virus infection may be an important factor in the ecological control of planktonic micro-organisms.Abstract:
The concentration of bacteriophages in natural unpolluted waters is in general believed to be low, and they have therefore been considered ecologically unimportant. Using a new method for quantitative enumeration, we have found up to 2.5 x 10(8) virus particles per millilitre in natural waters. These concentrations indicate that virus infection may be an important factor in the ecological control of planktonic micro-organisms, and that viruses might mediate genetic exchange among bacteria in natural aquatic environments.read more
Citations
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MonographDOI
Demographics of lytic viral infection of coastal ocean Vibrio
TL;DR: Thesis: Ph. D., Joint Program in Biological Oceanography (Massachusetts Institute of Technology, Department of Civil and Environmental Engineering; and the Woods Hole Oceanographic Institution), 2014.
Journal ArticleDOI
Effects of sodium azide on the abundance of prokaryotes and viruses in marine samples.
Christian Winter,Marie-Emmanuelle Kerros,Marie-Emmanuelle Kerros,Markus G. Weinbauer,Markus G. Weinbauer +4 more
TL;DR: Sodium azide cannot be used to maintain marine samples used for the enumeration of prokaryotes and viruses and the potential of sodium azide as a preservative as a possible alternative is tested.
Journal ArticleDOI
Relationship between viral and prokaryotic abundance on the Bajo O’Higgins 1 Seamount (Humboldt Current System off Chile)
TL;DR: The results indicate that the environmental conditions, mainly the concentration of dissolved oxygen in the water column over Bajo O’Higgins 1 seamount, shape the association between viral and prokaryotic abundance.
Dissertation
Sources and Occurrence of Antibiotic Resistance in the Environment
TL;DR: The history and scope of both antibiotics and resistance, the mechanisms of resistance, and evidence for the spread of antibiotic resistant organisms and resistance genes through humans, animals, and the environment are reviewed.
Journal ArticleDOI
Isolation of Emiliania huxleyi viruses from the Gulf of Maine
James M. Vaughn,William M. Balch,James F. Novotny,Cathy L. Vining,Christopher D. Palmer,David T. Drapeau,E. S. Booth,Dustin M. Kneifel,Allen L. Bell +8 more
TL;DR: Viruses infective to the marine coccolithophore Emiliania huxleyi were isolated from waters of the Gulf of Maine during May and June of 2004, a period when ambient E. huxleysi concen- trations were minimal, leading to speculation that virus progeny might be leaking from intact hosts during this period, with eventual host lysis occurring later.
References
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Journal ArticleDOI
Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems.
B A Wiggins,M Alexander +1 more
TL;DR: It is suggested 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 10(4) CFU/ml.
Journal ArticleDOI
Rate of bacterial mortality in aquatic environments
TL;DR: Results obtained from river water, estuarine water, and seawater show overall bacterial mortality rates in the range 0.010 to 0.030 h, in good agreement with the range of growth rates measured in the same environments.
Journal ArticleDOI
Do bacteria-sized marine eukaryotes consume significant bacterial production?
Jed A. Fuhrman,George B. McManus +1 more
TL;DR: Evidence is presented that previously uncharacterized, small eukaryotes that are able to pass even 0.6-micrometer filters may be responsible for a large fraction of the total grazing in coastal waters.