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Establishing Fungal Entomopathogens as Endophytes: Towards Endophytic Biological Control
Published on: April 11, 2013
The potential role of pathogens in biological control
1Department of Pure and Applied Biology, Imperial College, Ascot, Berkshire, UK.
Nature
|January 19, 1989
Summary
Pathogen reservoirs, like soil or host cadavers, can stabilize invertebrate host populations. Introducing pathogens from these reservoirs can regulate host numbers, improving biological control effectiveness.
Area of Science:
- Ecology
- Theoretical Biology
- Population Dynamics
Background:
- Pathogens (viruses, fungi, bacteria, protozoans) significantly impact invertebrate host populations.
- Existing theoretical models often assume uniform pathogen structure, failing to explain stable host populations.
- Stable host-pathogen systems involve pathogen transmission from protected, longer-lived stages in reservoirs.
Purpose of the Study:
- To propose a new theoretical model for invertebrate host-pathogen interactions.
- To incorporate pathogen population structure, including reservoirs, into theoretical models.
- To explain the range of population dynamics observed in natural host-pathogen systems.
Main Methods:
- Development of a novel theoretical model for host-pathogen dynamics.
- Inclusion of pathogen reservoirs (soil, cadavers, live hosts) in the model.
- Analysis of model predictions regarding host population regulation.
Main Results:
- The model demonstrates that host populations can be regulated to low, constant densities.
- Sufficient translocation of pathogens from reservoirs to transmission habitats is key to regulation.
- Pathogen reservoirs play a crucial role in maintaining host population stability.
Conclusions:
- Understanding pathogen reservoirs is vital for predicting host population dynamics.
- Pathogen reservoirs can be leveraged to enhance biological control programs.
- This model provides a framework for designing more effective biological control agents.
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