Affiliation:
1. The author is at the Universität Basel, Zoologisches Institut, Rheinsprung 9, 4051 Basel, Switzerland.
Abstract
Serial passage experiments are a form of experimental evolution that is frequently used in applied sciences; for example, in vaccine development. During these experiments, molecular and phenotypic evolution can be monitored in real time, providing insights into the causes and consequences of parasite evolution. Within-host competition generally drives an increase in a parasite's virulence in a new host, whereas the parasite becomes avirulent to its former host, indicating a trade-off between parasite fitnesses on different hosts. Understanding why parasite virulence seldom escalates similarly in natural populations could help us to manage virulence and deal with emerging diseases.
Publisher
American Association for the Advancement of Science (AAAS)
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