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Evolution of pathogens in a man-made world.

Camille Lebarbenchon1, Sam P Brown, Robert Poulin

  • 1Génétique et Evolution des Maladies Infectieuses, UMR CNRS/IRD 2724, IRD, 911 Avenue Agropolis, BP 64501, 34394 Montpellier cedex 5, France.

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Human activities significantly alter environments, driving the evolution of parasites and pathogens. Understanding these complex links is crucial for public health and conservation.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Environmental Science

Background:

  • Human activities cause large-scale environmental changes, impacting all organisms.
  • Parasites and pathogens, like free-living species, are evolving in response to anthropogenic pressures.
  • A comprehensive framework linking human impact to parasite evolution is currently lacking.

Purpose of the Study:

  • To review how human activities directly and indirectly influence parasite evolution.
  • To explore the evolution of parasite traits such as specificity, virulence, and polymorphism.
  • To identify key research questions for understanding human-driven parasite evolution.

Main Methods:

  • Literature review of empirical and theoretical examples.
  • Analysis of direct and indirect anthropogenic factors affecting parasite evolution.
  • Synthesis of diverse factors including habitat fragmentation, pollution, and climate change.

Main Results:

  • Humans directly and indirectly influence parasite evolution through various mechanisms.
  • Factors like pollution, biodiversity loss, and climate change are significant drivers.
  • The use of vaccines, antibiotics, and population changes also impact parasite evolution.

Conclusions:

  • Understanding human impacts on parasite evolution is essential for public health.
  • This knowledge is critical for effective economic development and conservation biology strategies.
  • Further research is needed to address the complex interactions between anthropogenic changes and parasite evolution.