Susceptible and infectious states for both vector and host in a dynamic pathogen-vector-host system
Zachary S Lamas1,2, Maiya Krichton1,2, Eugene V Ryabov1,2,3
1Bee Research Laboratory, United States Department of Agriculture-Agricultural Research Service, Beltsville 06415, MD, USA.
Proceedings. Biological Sciences
|January 10, 2024
Summary
Deformed wing virus (DWV) spreads in honeybee populations through mite-to-mite transmission and bee social behaviors like trophallaxis. This highlights community and vector transmission's importance for virus maintenance.
Area of Science:
- * Ecology and Evolutionary Biology
- * Pathogen Dynamics
- * Insect Pathology
Background:
- * Deformed wing virus (DWV) is a significant pathogen affecting honeybee populations.
- * Efficient transmission occurs via vectors (mites) and social contact among bees.
- * Understanding transmission dynamics is crucial for managing honeybee health.
Purpose of the Study:
- * To investigate the transmission routes of Deformed wing virus (DWV) in honeybee populations.
- * To determine how vector-vector, host-host, and host-vector transmission maintain DWV.
- * To identify key avenues for DWV maintenance and infection.
Main Methods:
- * Experimental measurement of vector-vector transmission.
- * Assessment of host-host transmission routes (trophallaxis, cannibalism).
- * Evaluation of host-vector transmission dynamics.
Main Results:
- * Co-infestations on shared hosts facilitate DWV movement between mites.
- * Honeybee social behaviors, trophallaxis and pupal cannibalism, enable bee-to-bee transmission.
- * Intra-host virus circulation creates a reservoir for mite acquisition.
Conclusions:
- * Community transmission among honeybees is vital for DWV maintenance.
- * Vector transmission by mites is a key component of the DWV cycle.
- * DWV transmission shares similarities with zoonotic and medical infectious diseases.
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