Translator Disclaimer
1 May 2012 Detection of a Novel Spotted Fever Group Rickettsia in the Gophertortoise Tick
Galina E. Zemtsova, Elizabeth Gleim, Michael J. Yabsley, L. Mike Conner, Tom Mann, Mary D. Brown, Lori Wendland, Michael L. Levin
Author Affiliations +
Abstract

The gophertortoise tick, Amblyomma tuberculatum (Marx), is distributed throughout the southeastern United States, and its immature life stages have been reported to occasionally bite humans. Here we report detection of a novel spotted fever group (SFG) Rickettsia in A. tuberculatum ticks collected in the southern United States. Among questing ticks collected in Georgia, 10 pools of larvae were identified as gophertortoise ticks, A. tuberculatum. Each of these samples was positive for SFG Rickettsiae. The restriction fragment-length polymorphism profiles were identical to each other, but distinct from those of other rickettsiae previously found in Amblyomma spp. ticks. Partial genetic characterization of the novel agent was achieved by sequencing the 17 kDa, gltA, ompB, ompA, rpoB, and sca4 genes. Analysis of a concatenated tree of four genes (gltA, ompB, ompA, and sca4) demonstrates close relatedness of the detected Rickettsia to several SFG Rickettsia spp. The identical rickettsial DNA was detected in 50 and 70% of adult A. tuberculatum ticks from Mississippi and Florida, respectively. The results indicate wide distribution of a novel Rickettsia, capability for transovarial transmission, and high prevalence in tested tick populations.

© 2012 Entomological Society of America
Galina E. Zemtsova, Elizabeth Gleim, Michael J. Yabsley, L. Mike Conner, Tom Mann, Mary D. Brown, Lori Wendland, and Michael L. Levin "Detection of a Novel Spotted Fever Group Rickettsia in the Gophertortoise Tick," Journal of Medical Entomology 49(3), 783-786, (1 May 2012). https://doi.org/10.1603/ME11264
Received: 28 November 2011; Accepted: 27 February 2012; Published: 1 May 2012
JOURNAL ARTICLE
4 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

Share
SHARE
KEYWORDS
Amblyomma tuberculatum
phylogenetic analysis
SFG Rickettsia
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top