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1 March 2015 The Evolving Medical and Veterinary Importance of the Gulf Coast Tick (Acari: Ixodidae)
Christopher D. Paddock, Jerome Goddard
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Abstract

Amblyomma maculatum Koch (the Gulf Coast tick) is a three-host, ixodid tick that is distributed throughout much of the southeastern and south-central United States, as well as several countries throughout Central and South America. A considerable amount of scientific literature followed the original description of A. maculatum in 1844; nonetheless, the Gulf Coast tick was not recognized as a vector of any known pathogen of animals or humans for >150 years. It is now identified as the principal vector of Hepatozoon americanum, the agent responsible for American canine hepatozoonosis, and Rickettsia parkeri, the cause of an emerging, eschar-associated spotted fever group rickettsiosis identified throughout much of the Western Hemisphere. Coincident with these discoveries has been recognition that the geographical distribution of A. maculatum in the United States is far more extensive than described 70 yr ago, supporting the idea that range and abundance of certain tick species, particularly those with diverse host preferences, are not fixed in time or space, and may change over relatively short intervals. Renewed interest in the Gulf Coast tick reinforces the notion that the perceived importance of a particular tick species to human or animal health can be relatively fluid, and may shift dramatically with changes in the distribution and abundance of the arthropod, its vertebrate hosts, or the microbial agents that transit among these organisms.

Published by Oxford University Press on behalf of Entomological Society of America 2015. This work is witten by US Government employees and is in the public domain in the US.
Christopher D. Paddock and Jerome Goddard "The Evolving Medical and Veterinary Importance of the Gulf Coast Tick (Acari: Ixodidae)," Journal of Medical Entomology 52(2), 230-252, (1 March 2015). https://doi.org/10.1093/jme/tju022
Received: 12 June 2014; Accepted: 2 December 2014; Published: 1 March 2015
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KEYWORDS
Amblyomma maculatum
Gulf Coast tick
Hepatozoon americanum
Rickettsia parkeri
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