Dynamics of virus abundance in coastal seawater

  • Bratbak G
  • Heldal M
  • Thingstad T
 et al. 
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The short term dynamics of virus abundance in coastal sea water was investigated by frequent sampling of open ecosystems and of water incubated in bottles in situ. Sampling intervals were 6-10 min. The viral abundance showed significant temporal fluctuations both in situ and in the bottles and it changed in some cases by a factor of 2-4 within 10-20 min. Laboratory incubations showed that production and release of viruses were not induced or stimulated by nutrient addition, high light intensities or transient increase in temperatures ca. 10°C. Our interpretation of these results is that they result from synchronous lysis and release of virus particles from bacterial hosts and a rapid disintegration of these particles when released in sea water.

Author-supplied keywords

  • bacteria
  • phage
  • population dynamics
  • viral-like particle (VLP)
  • virus

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  • G. Bratbak

  • M. Heldal

  • T. F. Thingstad

  • P. Tuomi

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