Marine Biology

, Volume 56, Issue 1, pp 49–57 | Cite as

Predator-prey interactions between the larvacean Oikopleura dioica and bacterioplankton in enclosed water columns

  • K. R. King
  • J. T. Hollibaugh
  • F. Azam


The larvacean Oikopleura dioica Fol was fed 3H-labeled natural assemblages of marine bacterioplankton. Grazing rates ranged from <1 to >100 ml day-1 individual-1 and were highly dependent onlarvacean body size. These rates were combined with estimates of abundance of O. dioica in large floating enclosures with semi-natural populations (Controlled Ecosystems Populations Experiment, CEPEX) to determine the impact of the larvacean on the bacterial populations and to estimate the amount of bacteria ingested by the larvaceans. Apparently, O. dioica has minimal influence on the population dynamics of the free-living bacteria, although bacteria may form a substantial portion of the larvacean's diet.


Body Size Water Column Population Dynamic Bacterial Population Substantial Portion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • K. R. King
    • 1
    • 2
  • J. T. Hollibaugh
    • 3
  • F. Azam
    • 3
  1. 1.Department of OceanographyUniversity of WashingtonSeattleUSA
  2. 2.Friday Harbor LaboratoriesUniversity of WashingtonSeattleUSA
  3. 3.Institute of Marine Resources, A-018, Scripps Institution of OceanographyLa JollaUSA

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