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Pre-Existing Microfilarial Infections Of American Robins (Passeriformes: Turdidae) And Common Grackles (Passeriformes: Icteridae) Have Limited Impact On Enhancing Dissemination Of West Nile Virus In Culex Pipiens Mosquitoes (Diptera: Culicidae), Jefferson A. Vaughan, Juanita Hinson, Elizabeth S. Andrews, Michael J. Turrell
Pre-Existing Microfilarial Infections Of American Robins (Passeriformes: Turdidae) And Common Grackles (Passeriformes: Icteridae) Have Limited Impact On Enhancing Dissemination Of West Nile Virus In Culex Pipiens Mosquitoes (Diptera: Culicidae), Jefferson A. Vaughan, Juanita Hinson, Elizabeth S. Andrews, Michael J. Turrell
Biology Faculty Publications
Microfilariae (MF) are the immature stages of filarial nematode parasites and inhabit the blood and dermis of all classes of vertebrates, except fish. Concurrent ingestion of MF and arboviruses by mosquitoes can enhance mosquito transmission of virus compared to when virus is ingested alone. Shortly after being ingested, MF penetrate the mosquito’s midgut and may introduce virus into the mosquito’s hemocoel, creating a disseminated viral infection much sooner than normal. This phenomenon is known as microfilarial enhancement. Both American Robins and Common Grackles harbor MF—that is, Eufilaria sp. and Chandlerella quiscali von Linstow (Spirurida: Onchocercidae), respectively. We compared infection and …