Dissecting the Transmission Biology of Vector-Borne Diseases Derrick Mathias, PhD, MPH Department of Entomology & Plant Pathology College of Agriculture.

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Presentation transcript:

Dissecting the Transmission Biology of Vector-Borne Diseases Derrick Mathias, PhD, MPH Department of Entomology & Plant Pathology College of Agriculture Auburn University Faculty Cluster Hire Initiative: Environmental Health Cluster

Nidus of pathogen transmission Reisen 2010, Annu Rev Entomol 55: Competency - Feeding behavior - Oviposition behavior - Biology of immature stages - Virulence - Mutation rate - Incubation period - Immune avoidance - Immune response - Exposure behavior vector attraction - Nutritional status Components of Vector-Borne Disease Systems Ecological Factors -Seasonal/spatial variation in temperature, rainfall, etc. - Land cover, vegetation - Landscape modification - Climate change Transmission- Cycle Variables - Host number - Reservoirs - Bridge vectors - Vertical transmission Host Vector Pathogen

Zieler et al., 2000 J Exp Biol 203: I.Vector Competence −mechanisms of pathogen invasion ligand variation on vector tissues II.Vector-Pathogen Coevolution –population genetics/genomics of vector & pathogen –virus adaptation to the vector(s) III.Vector Ecology –feeding behavior & host attraction (olfactory cues) –oviposition behavior –larval ecology –vector habitat characterization Bethan et al Research Interests Transmission Biology of malaria and arboviral diseases (bluetongue, epizootic hemorrhagic disease): Exflagellat ion Fertilizatio n MG invasion Transm ission Sporog ony Schmidtmann, USDA-ARS Roy et al. 2009

Potential Areas for Collaboration Recent HD Mortality in wild ruminants Data compiled by the Southeastern Cooperative Wildlife Disease Study, UGA –Modeling of disease risk –Objective: To improve understanding of transmission cycles and conditions that lead to outbreaks. –Variables: vector (density, diversity) pathogen (serotype, genetic variation) climate water quantity/quality other abiotic factors land cover/use –Potential Funding: NSF Ecology & Evolution of Infectious Diseases program