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Related Concept Videos

Infection01:20

Infection

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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
11.2K

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Updated: Dec 9, 2025

The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis
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What is pathogen-mediated insect superabundance?

Ruairí Donnelly1, Christopher A Gilligan1

  • 1Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK.

Journal of the Royal Society, Interface
|September 9, 2020
PubMed
Summary
This summary is machine-generated.

Pathogen-mediated insect superabundance (PMiS) occurs when plant pathogens increase insect vector populations. This study defines PMiS and its mechanisms, distinguishing it from environmentally mediated insect superabundance (EMiS).

Keywords:
epidemiologymanipulationphytophagousplant pathogensuperabundancevector

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Area of Science:

  • Plant pathology
  • Ecology
  • Epidemiology

Background:

  • Insect superabundance, or increased insect vector populations, can be driven by environmental factors (EMiS) or by pathogens altering host plants.
  • Pathogen-mediated insect superabundance (PMiS) is a newly defined phenomenon where pathogens enhance plant quality as a resource for insect vectors, leading to increased vector populations.

Purpose of the Study:

  • To formalize a definition and investigate the epidemiological mechanisms of pathogen-mediated insect superabundance (PMiS).
  • To differentiate PMiS from environmentally mediated insect superabundance (EMiS) using field data.
  • To provide a foundation for understanding the link between insect superabundance and plant pathogens, motivated by a cassava virus epidemic.

Main Methods:

  • Development of a novel epidemiological framework to study PMiS.
  • Formalization of the definition and identification of key epidemiological mechanisms driving PMiS.

Main Results:

  • The study outlines the epidemiological basis for PMiS, explaining how pathogens can directly influence insect vector abundance.
  • Distinguishing features between PMiS and EMiS are identified, crucial for interpreting field observations.

Conclusions:

  • PMiS represents a significant factor in insect vector population dynamics, distinct from environmental drivers.
  • This research provides a critical framework for future studies on the complex interactions between insect vectors, plant pathogens, and host plants.