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Rapid Diagnosis of Avian Influenza Virus in Wild Birds: Use of a Portable rRT-PCR and Freeze-dried Reagents in the Field
Published on: August 2, 2011
The hitchhiker's guide to avian malaria
Matthew J Wood1, Catherine L Cosgrove
1Edward Grey Institute, Department of Zoology, University of Oxford, Oxford OX1 3PS, UK. matt.wood@zoo.ox.ac.uk
Trends in Ecology & Evolution
|May 17, 2006
Summary
Avian malaria parasites spread more widely when they evolve year-round transmission, unlike those only transmitted in summer. This finding is crucial for understanding emerging infectious diseases in migratory birds.
Area of Science:
- Evolutionary Ecology
- Epidemiology
- Macroecology
- Parasitology
Background:
- The ecological factors driving parasite dispersal remain largely unknown, posing risks for emerging infectious diseases.
- Migratory birds are significant hosts for parasites, facilitating their geographical spread and evolution.
Purpose of the Study:
- To investigate the distribution and prevalence of avian malaria in a migratory bird species across Western Europe.
- To understand how parasite transmission strategies influence the ecological success and spread of avian malaria lineages.
Main Methods:
- Field surveys were conducted across Western Europe to sample migratory birds.
- Prevalence and distribution of avian malaria parasites were assessed using molecular techniques.
- Phylogenetic and ecological analyses were used to infer transmission patterns and evolutionary history.
Main Results:
- Avian malaria lineages exhibiting year-round transmission were found to be more widespread and prevalent than those with summer-only transmission.
- Repeated, independent evolution of year-round transmission was identified as a key factor in parasite success.
- Geographical distribution patterns correlated with parasite transmission seasonality.
Conclusions:
- The evolution of year-round transmission significantly enhances the ecological dominance and geographical spread of avian malaria parasites.
- Understanding parasite transmission dynamics is critical for predicting and managing infectious disease emergence in wildlife.
- This research highlights the interconnectedness of evolutionary ecology, epidemiology, and macroecology in parasite dispersal.
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