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Volume 16, Number 5—May 2010

Dispatch

Rickettsiae in Gulf Coast Ticks, Arkansas, USA

Rebecca TroutComments to Author , C. Dayton Steelman, Allen L. Szalanski, and Phillip C. Williamson
Author affiliations: University of Arkansas, Fayetteville, Arkansas, USA (R. Trout, C.D. Steelman, A.L. Szalanski); University of North Texas Health Science Center, Fort Worth, Texas, USA (P.C. Williamson)

Main Article

Table

Gulf Coast ticks (Amblyomma maculatum) collected from white-tailed deer and dogs, Arkansas, USA, 2006–2008*

Source No. tested No. (%) positive Blood meal gltA positive rompB-positive groups
gltA- and rompB-positive groups
2 3 4 5 1 2 3 4 6 NS
White-tailed deer
Nymph 8 0 Yes
No
Male 46 15 (33) Yes 2 2
No 5 2 4
Female 41 13 (32) Yes 2 2



No
3
3





3




Total collected from deer
95
28 (29)

10
7
0
0
0

0
9
0
0
0
2
Dogs
Nymph 8 2 (25) Yes
No 1 1
Male 95 28 (29) Yes 1 1
No 8 1 1 1 1 8 2 3 1
Female 9 4 (44) Yes



No

1




3





Total collected from dogs
112
34 (30)

9
2
1
1
1

3
10
2
3
1
1
Total ticks collected 207 62 (30) 19 9 1 1 1 3 19 2 3 1 3

*Of 207 ticks collected, 30% were positive for rickettsiae. Ticks were positive for citrate synthase (gltA) gene only, rickettsial outer membrane protein B (rompB) gene only, or both genes; rompB sequences fell within 6 sequence groups. Ticks were collected from canids during March 2006–January 2008 and from deer during the 2008 deer hunting season. NS, not sequenced.

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