Term of Award

Summer 1999

Degree Name

Master of Science

Document Type and Release Option

Thesis (open access)

Department

Department of Biology and Institute of Arthropodology and Parasitology

Committee Chair

Lance A. Durden

Committee Member 1

Q. Quentin Fang

Committee Member 2

James H. Oliver, Jr.

Committee Member 3

Oscar J. Pung

Abstract

Human monocytic ehrlichiosis (HME) is an emerging, zoonosis transmitted to mammals by ixodid ticks. Prevalence of infected ticks and distribution of infection foci indicate relative risk of human exposure to ehrlichiosis and may be influenced by factors such as geographic isolation and human disturbance. To test this, individual and pooled lone star ticks, Amblyomma americanum (L.), collected from 3 populations from the coast and barrier islands of Georgia were screened for Ehrlichia chaffeensis Anderson, Dawson, Jone, and Wilson, the agent of HME. A species-specific, nested polymerase chain reaction (PGR) assay was used to amplify a 572 base pair fragment of the E. chaffeensis 16S rRNA gene from infected ticks. PGR product specificity was confirmed by nucleotide sequencing. Our results showed the prevalence of infected ticks to be 0%, 0.9%, and 9.3% for Sapelo Island, St. Catherine's Island, and Ft. McAllister respectively.

See also:

J. E. Whitlock, Q. Q. Fang, L. A. Durden, J. H. Oliver, Prevalence of Ehrlichia chaffeensis (Rickettsiales: Rickettsiaceae) in Amblyomma americanum (Acari: Ixodidae) from the Georgia Coast and Barrier Islands, Journal of Medical Entomology, Volume 37, Issue 2, 1 March 2000, Pages 276–280, https://doi.org/10.1603/0022-2585-37.2.276

OCLC Number

1029197087

Copyright

This work is archived and distributed under the repository’s modified copyright and reuse license for Theses and Dissertations authored 2005 or prior, available at https://digitalcommons.georgiasouthern.edu/dc-promo/26/. Under this license, end-users may read, copy, and store this work without restriction. For questions related to additional reuse of this work, including distribution and creation of derivative works, please contact the copyright owner. Copyright owners who wish to review or revise the terms of this license, please contact digitalcommons@georgiasouthern.edu.

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