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Quantitative Viral EcologyDynamics of Viruses and Their Microbial Hosts$
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Joshua S. Weitz

Print publication date: 2016

Print ISBN-13: 9780691161549

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691161549.001.0001

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Evolutionary Dynamics of Viruses or Microbes, but Not Both

Evolutionary Dynamics of Viruses or Microbes, but Not Both

Chapter:
(p.89) Chapter Four Evolutionary Dynamics of Viruses or Microbes, but Not Both
Source:
Quantitative Viral Ecology
Author(s):

Joshua S. Weitz

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691161549.003.0004

This chapter discusses the evolutionary dynamics of viruses. Preexisting variation in host phenotypes include variants with different levels of susceptibility to viruses, including complete resistance. Formative studies of the basis of the mutation rate relied upon virus–host interactions and the possibility of the evolution of resistance to infection. Viruses represent a strong selective pressure and can induce evolution among hosts. Host evolution, as induced by viruses, includes novel forms of ecological dynamics, including cryptic dynamics. Infection of hosts represents a strong selective pressure for viruses. Viruses that differ in their life history traits vary in their fitness and can invade and replace existing viral strains. The latent period represents a model trait for the further study of the evolution of intermediate phenotypes. Evolution among other traits is also possible, including who infects whom.

Keywords:   viruses, mutation, host evolution, viral evolution, evolutionary dynamics, virus–host interactions

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