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    Distribution of bird reservoir hosts for West Nile Virus in Montana

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    McElroyBfinal_2011.pdf (580.9Kb)
    Author
    McElroy, Billy
    Advisor
    Grant Hokit; Kevin Stewart; Brandon Sheafor
    Date of Issue
    2011-04-01
    Subject Keywords
    Culex tarsalis, mosquitoes, West Nile virus, birds
    Metadata
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    URI
    https://scholars.carroll.edu/handle/20.500.12647/2807
    Title
    Distribution of bird reservoir hosts for West Nile Virus in Montana
    Type
    thesis
    Abstract
    West Nile virus (WNv) is an arthropod-borne flavivirus that was first detected in the United States in 1999. By 2004 it had spread to 48 states and, to date, it has been the source of greater than 29,000 cases of human infection. WNv is maintained through an avian-mosquito transmission cycle, with birds serving as the primary vertebrate hosts for the amplification of the virus. Previous studies have shown Passeriform birds to be some of the most virulent competent hosts for the virus, producing adequate viremia counts for continuation of the transmission cycle. Associations were analyzed between mosquito populations and total bird abundance, Passeriformes abundance, and virulent competent bird species abundance using data collected from sites across Montana. No temporal correlation was found between bird and Culex tarsalis (the most important mosquito vector in Montana) mosquito numbers across the summer sampling period. However, a positive correlation was observced between passerine abundance and total mosquito numbers. These findings suggest that passerine abundance is associated with mosquito population numbers, which may result in an increased risk for WNv transmission.
    Degree Awarded
    Bachelor's
    Semester
    Spring
    Department
    Life & Environmental Sciences
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    • Life and Environmental Sciences Undergraduate Theses

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