01894-A: Documentation of Disease-Causing Ticks in a Field Trial Environment for the Purpose of Developing Practical and Cost-Effective Strategies for Tick Control
Grant Status: Closed
Many species of Ehrlichia exist, but the most detrimental of these affect canines. Unfortunately, Ehrlichia incidence is increasing in the southeastern United States. The primary approach to Ehrlichiosis prevention is through tick control, which includes application of acaricides to hosts and the habitat. We identified three Ehrlichia species in two species of ticks (A. americanum and I. scapularis) and two Anaplasma species in two tick species (A. americanum and I. scapularis). The most frequently collected ticks on canines, D. variabilis (American dog tick), did not have any Ehrlichia. We then screened all of the collected ticks for Rickettsia and did not identify any pathogenic Rickettsia within those ticks. There was no spatial clustering of Ehrlichia or Rickettsia positive ticks. The identification of pathogenic Ehrlichia and non-pathogenic Rickettsia within two different tick species warrants further investigations to understand the etiological agents and interactions of the vectors responsible for the high incidence of Ehrlichiosis and Rickettsiosis in the region. Such research will improve surveillance and diagnostic protocols, provide insights into improving management practices, and inform the public on how to protect their dogs from ticks and their associated pathogens.
Trout Fryxell, R. T., Moore, J. E., Collins, M. D., Kwon, Y., Jean-Philippe, S. R., Schaeffer, S. M., … Houston, A. E. (2015). Habitat and Vegetation Variables Are Not Enough When Predicting Tick Populations in the Southeastern United States. Plos One, 10(12), e0144092.
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Participate in canine health research by providing samples or by enrolling in a clinical trial. Samples are needed from healthy dogs and dogs affected by specific diseases.