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Related Experiment Videos

Experimental coevolution with bacteria and phage. The Pseudomonas fluorescens--Phi2 model system.

Michael A Brockhurst1, Andrew D Morgan, Andrew Fenton

  • 1School of Biological Sciences, Biosciences Building, University of Liverpool, Liverpool L69 7ZB, UK. michael.brockhurst@liv.ac.uk

Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases
|February 27, 2007
PubMed
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Antagonistic coevolution between hosts and parasites is a major evolutionary force. Experiments with bacteria and their viruses, phage, provide direct empirical evidence of this host-parasite arms race in action.

Area of Science:

  • Evolutionary biology
  • Microbiology
  • Ecology

Background:

  • Parasites are widespread in nature.
  • Host-parasite interactions drive ecological and evolutionary dynamics.
  • Antagonistic coevolution is a key theoretical concept in evolutionary ecology.

Purpose of the Study:

  • To describe a model system for studying host-parasite coevolution.
  • To synthesize recent findings on the causes and consequences of antagonistic coevolution.
  • To provide empirical evidence for coevolutionary dynamics in controlled settings.

Main Methods:

  • Utilizing laboratory populations of bacteria and their infecting viruses (phage).
  • Observing and analyzing interactions over multiple generations.
  • Quantifying evolutionary changes in both host and parasite populations.

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Main Results:

  • Direct empirical evidence of antagonistic coevolution was obtained.
  • The study details the dynamics of this host-parasite arms race.
  • Findings address the underlying causes and resulting consequences of coevolution.

Conclusions:

  • Bacterial-phage systems serve as a powerful model for studying coevolution.
  • Empirical data confirm the significant role of antagonistic coevolution in shaping biological systems.
  • Understanding these dynamics is crucial for ecology and evolution.