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Systematic temporal changes in host susceptibility to infection: demographic mechanisms
Parasitology
|August 1, 1984
Summary
Host susceptibility variability influences host-parasite dynamics. Mathematical models show population susceptibility changes over time due to demographics, not genetics or immunity, impacting coevolution.
Area of Science:
- Ecology
- Mathematical Biology
- Evolutionary Biology
Background:
- Host-parasite interactions are fundamental to ecological and evolutionary processes.
- Variability in host susceptibility can significantly impact population dynamics.
Purpose of the Study:
- To investigate how individual host susceptibility variability affects host-parasite population dynamics.
- To explore the role of demographic factors in driving changes in average host susceptibility.
Main Methods:
- Development of simple mathematical models.
- Analysis of host-parasite population dynamics incorporating innate host susceptibility differences.
- Examination of demographic influences on population-level susceptibility.
Main Results:
- Host population's average susceptibility can change systematically over time.
- These changes can occur without genetic inheritance or acquired immunity.
- Demographic factors are key drivers of shifting susceptibility patterns.
Conclusions:
- Individual host susceptibility variation has significant implications for host-parasite dynamics.
- Demographic shifts can alter population susceptibility, influencing coevolutionary trajectories.
- Understanding these dynamics is crucial for predicting host-parasite coevolutionary patterns.
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