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A Rapid Image-based Bacterial Virulence Assay Using Amoeba
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VIRULENCE.

J J Bull1

  • 1Department of Zoology, University of Texas, Austin, Texas, 78712.

Evolution; International Journal of Organic Evolution
|June 2, 2017
PubMed
Summary
This summary is machine-generated.

Parasites harm hosts because natural selection can favor virulent parasites. However, empirical evidence supporting this evolutionary theory is limited, though future research may provide more data.

Keywords:
Evolutionmicroparasitepopulation biologyvirulencevirus

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Area of Science:

  • Evolutionary biology
  • Parasitology
  • Ecology

Background:

  • Parasites often harm their hosts, contradicting the intuition that benign parasites should be favored for host transmission.
  • Theoretical models suggest natural selection may favor virulent parasites over avirulent ones.

Purpose of the Study:

  • To organize existing theoretical models of parasite virulence.
  • To evaluate the empirical evidence supporting or refuting these models.

Main Methods:

  • Literature review and synthesis of theoretical models.
  • Critical evaluation of empirical data on parasite-host interactions.

Main Results:

  • A framework was developed to categorize models of parasite virulence.
  • Scant rigorous empirical evidence currently supports most models of virulence evolution.
  • Few definitive observations exist of virulence evolving in parasite populations.

Conclusions:

  • Existing evidence for parasite virulence evolution is limited.
  • Further empirical research is needed to rigorously test theoretical models.
  • Developing empirical models of host-parasite interactions will facilitate future data acquisition.