Heterogeneous Host Susceptibility Enhances Prevalence of Mixed-Genotype Micro-Parasite Infections
Author Information
Author(s): van der Werf Wopke, Hemerik Lia, Vlak Just M., Zwart Mark P.
Primary Institution: Wageningen University
Hypothesis
How does heterogeneity in host susceptibility affect the prevalence of mixed-genotype infections?
Conclusion
Heterogeneity in host susceptibility significantly increases the prevalence of mixed-genotype infections in micro-parasite systems.
Supporting Evidence
- The frequency of mixed-genotype infections was significantly higher than predicted by the independent action hypothesis.
- Models incorporating host susceptibility variation provided better fits to the data than those assuming homogeneous susceptibility.
- Experimental data showed a shallow dose response consistent with heterogeneous host susceptibility.
Takeaway
Some caterpillars get sick from viruses more easily than others, and this difference helps more types of viruses to infect them at the same time.
Methodology
The study used bioassays and quantitative real-time PCR to analyze the infection process in caterpillars exposed to different virus genotypes.
Potential Biases
Potential biases in the selection of host larvae and the experimental setup could affect the results.
Limitations
The study may not account for all environmental factors affecting host susceptibility.
Participant Demographics
Fifth instar Spodoptera exigua larvae were used in the experiments.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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