Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 17, Number 10—October 2011

Equine Piroplasmosis Associated with Amblyomma cajennense Ticks, Texas, USA

Glen A. ScolesComments to Author , H. Joel Hutcheson, Jack L. Schlater, Steven G. Hennager, Angela M. Pelzel, and Don P. Knowles
Author affiliations: US Department of Agriculture and Washington State University, Pullman, Washington, USA (G.A. Scoles, D.P. Knowles); US Department of Agriculture, Ames, Iowa, USA (H.J. Hutcheson, J.L. Schlater, S.G. Hennager); US Department of Agriculture, Fort Collins, Colorado, USA (A.M. Pelzel)

Main Article

Table 2

Tick species found on horses at index ranch of equine piroplasmosis outbreak in southern Texas, USA, 2009

Species No. (%) horses* No. ticks
Average no. ticks/horse
Male Female Nymph
Amblyomma cajennense 180 (78.9) 201 229 1 2.4
A. maculatum 45 (19.7) 43 33 0 1.7
Dermacentor (Anocentor) nitens 7 (3.0) 4 7 3 2
D. variabilis 37 (16.2) 20 34 0 1.6

*Of 228 horses sampled, 41 had >1 species of tick present.

Main Article

Page created: September 26, 2011
Page updated: September 26, 2011
Page reviewed: September 26, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.