Equine piroplasmosis associated with Amblyomma cajennense Ticks, Texas, USA.
Abstract: We report an outbreak of equine piroplasmosis in southern Texas, USA, in 2009. Infection prevalence reached 100% in some areas (292 infected horses). Amblyomma cajennense was the predominant tick and experimentally transmitted Theileria equi to an uninfected horse. We suggest that transmission by this tick species played a role in this outbreak.
Publication Date: 2011-10-18 PubMed ID: 22000367PubMed Central: PMC3310643DOI: 10.3201/eid1710.101182Google Scholar: Lookup
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Summary
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This research article discusses an outbreak of equine piroplasmosis in Texas, USA in 2009, asserting that ticks, specifically the Amblyomma cajennense species, played a significant role in transmitting the Theileria equi parasite causing the disease.
Outline of the Study
- The study focuses on an outbreak of equine piroplasmosis, a tick-borne disease that affects horses, in Southern Texas in 2009. This disease is caused by the protozoan parasites Theileria equi and Babesia caballi, transmitted by ticks.
- The magnitude of the outbreak was significant, with the rate of infection reaching 100% in certain areas, meaning every horse in those locations was infected.
Amblyomma cajennense Ticks As The Vector
- The research highlights that Amblyomma cajennense, a species of tick, was the predominant tick in the area during the outbreak of equine piroplasmosis.
- An experiment carried out in the research showed that this species could transmit Theileria equi to an uninfected horse. This experimental evidence supports their hypothesis that this tick species played a significant role in the outbreak.
Implication and Suggestion
- The research implies that controlling the population of Amblyomma cajennense ticks could be a key strategy in preventing future outbreaks of equine piroplasmosis.
- Furthermore, the researchers suggest that a greater understanding of the role and behavior of this specific tick species could lead to more effective prevention and control measures.
Cite This Article
APA
Scoles GA, Hutcheson HJ, Schlater JL, Hennager SG, Pelzel AM, Knowles DP.
(2011).
Equine piroplasmosis associated with Amblyomma cajennense Ticks, Texas, USA.
Emerg Infect Dis, 17(10), 1903-1905.
https://doi.org/10.3201/eid1710.101182 Publication
Researcher Affiliations
- US Department of Agriculture and Washington State University, Pullman, Washington, USA. scoles@vetmed.wsu.edu
MeSH Terms
- Animals
- Babesiosis / diagnosis
- Babesiosis / epidemiology
- Babesiosis / transmission
- Babesiosis / veterinary
- Disease Outbreaks / veterinary
- Female
- Horse Diseases / epidemiology
- Horse Diseases / parasitology
- Horse Diseases / transmission
- Horses
- Ixodidae
- Male
- Texas / epidemiology
References
This article includes 13 references
- Stiller D, Coan ME. Recent developments in elucidating tick vector relationships for anaplasmosis and equine piroplasmosis.. Vet Parasitol 1995 Mar;57(1-3):97-108.
- Zapf F, Schein E. The development of Babesia (Theileria) equi (Laveran, 1901) in the gut and the haemolymph of the vector ticks, Hyalomma species.. Parasitol Res 1994;80(4):297-302.
- Zapf F, Schein E. New findings in the development of Babesia (Theileria) equi (Laveran, 1901) in the salivary glands of the vector ticks, Hyalomma species.. Parasitol Res 1994;80(7):543-8.
- Stiller D, Goff WL, Johnson LW, Knowles DP. Dermacentor variabilis and boophilus microplus (Acari: Ixodidae): experimental vectors of Babesia equi to equids.. J Med Entomol 2002 Jul;39(4):667-70.
- Brinton EP, Beck DE, Allred DM. Identification of the adults, nymphs and larvae of ticks of the genus Dermacentor Koch (Ixodidae) in the western United States. Brigham Young University Science Bulletin: Biological Series 1965;5:1–44.
- Cooley RA. The genera Dermacentor and Otocentor (Ixodidae) in the United States, with studies in variation. Natl Inst Health Bull 1938;171:1–89.
- Cooley RA, Kohls GM. The genus Amblyomma (Ixodidae) in the United States. J Parasitol 1944;30:77–111.
- Keirans JE, Durden LA. Illustrated key to nymphs of the tick genus Amblyomma (Acari: Ixodidae) found in the United States.. J Med Entomol 1998 Jul;35(4):489-95.
- Yunker CE, Keirans JE, Clifford CM, Easton ER. Dermacentor ticks (Acari: Ixodidae) of the New World: a scanning electron microscope atlas. Proc Entomol Soc Wash 1986;88:609–27.
- Ueti MW, Palmer GH, Kappmeyer LS, Scoles GA, Knowles DP. Expression of equi merozoite antigen 2 during development of Babesia equi in the midgut and salivary gland of the vector tick Boophilus microplus.. J Clin Microbiol 2003 Dec;41(12):5803-9.
- Walker JB, Olwage A. The tick vectors of Cowdria ruminantium (Ixodoidea, Ixodidae, genus Amblyomma) and their distribution.. Onderstepoort J Vet Res 1987 Sep;54(3):353-79.
- Needham GR, Teel PD. Off-host physiological ecology of ixodid ticks.. Annu Rev Entomol 1991;36:659-81.
- Gerstenberg C, Allen WR, Phipps LP. The mechanical transmission of Babesia equi infection in a British herd of horses. In: Werner U, Wade DF, Mumford JA, Kaaden OR, editors. Proceedings of the Eighth International Conference on Equine Infectious Diseases, Dubai, United Arab Emirates, March 23–26, 1998. Newmarket (UK): R & W Publications Ltd.; 1998. p. 100.
Citations
This article has been cited 22 times.- Coultous RM, Sutton DGM, Boden LA. A risk assessment of equine piroplasmosis entry, exposure and consequences in the UK.. Equine Vet J 2023 Mar;55(2):282-294.
- Almazán C, Scimeca RC, Reichard MV, Mosqueda J. Babesiosis and Theileriosis in North America.. Pathogens 2022 Jan 27;11(2).
- Rocafort-Ferrer G, Leblond A, Joulié A, René-Martellet M, Sandoz A, Poux V, Pradier S, Barry S, Vial L, Legrand L. Molecular assessment of Theileria equi and Babesia caballi prevalence in horses and ticks on horses in southeastern France.. Parasitol Res 2022 Mar;121(3):999-1008.
- Schnittger L, Ganzinelli S, Bhoora R, Omondi D, Nijhof AM, Florin-Christensen M. The Piroplasmida Babesia, Cytauxzoon, and Theileria in farm and companion animals: species compilation, molecular phylogeny, and evolutionary insights.. Parasitol Res 2022 May;121(5):1207-1245.
- Onzere CK, Fry LM, Bishop RP, Silva MG, Bastos RG, Knowles DP, Suarez CE. Theileria equi claudin like apicomplexan microneme protein contains neutralization-sensitive epitopes and interacts with components of the equine erythrocyte membrane skeleton.. Sci Rep 2021 Apr 29;11(1):9301.
- Idoko IS, Edeh RE, Adamu AM, Machunga-Mambula S, Okubanjo OO, Balogun EO, Adamu S, Johnson W, Kappmeyer L, Mousel M, Ueti MW. Molecular and Serological Detection of Piroplasms in Horses from Nigeria.. Pathogens 2021 Apr 23;10(5).
- Olafson PU, Buckmeier BG, May MA, Thomas DB. Molecular screening for rickettsial bacteria and piroplasms in ixodid ticks surveyed from white-tailed deer (Odocoileus virginianus) and nilgai antelope (Boselaphus tragocamelus) in southern Texas.. Int J Parasitol Parasites Wildl 2020 Dec;13:252-260.
- Quadros DG, Johnson TL, Whitney TR, Oliver JD, Oliva Chávez AS. Plant-Derived Natural Compounds for Tick Pest Control in Livestock and Wildlife: Pragmatism or Utopia?. Insects 2020 Aug 1;11(8).
- Onyiche TE, Suganuma K, Igarashi I, Yokoyama N, Xuan X, Thekisoe O. A Review on Equine Piroplasmosis: Epidemiology, Vector Ecology, Risk Factors, Host Immunity, Diagnosis and Control.. Int J Environ Res Public Health 2019 May 16;16(10).
- Smith RM, Bhoora RV, Kotzé A, Grobler JP, Lee Dalton D. Translocation a potential corridor for equine piroplasms in Cape mountain zebra (Equus zebra zebra).. Int J Parasitol Parasites Wildl 2019 Aug;9:130-133.
- Lobanov VA, Peckle M, Massard CL, Brad Scandrett W, Gajadhar AA. Development and validation of a duplex real-time PCR assay for the diagnosis of equine piroplasmosis.. Parasit Vectors 2018 Mar 2;11(1):125.
- Soares HS, Marcili A, Barbieri ARM, Minervino AHH, Moreira TR, Gennari SM, Labruna MB. Novel piroplasmid and Hepatozoon organisms infecting the wildlife of two regions of the Brazilian Amazon.. Int J Parasitol Parasites Wildl 2017 Aug;6(2):115-121.
- Van Voorhis WC, Doggett JS, Parsons M, Hulverson MA, Choi R, Arnold SLM, Riggs MW, Hemphill A, Howe DK, Mealey RH, Lau AOT, Merritt EA, Maly DJ, Fan E, Ojo KK. Extended-spectrum antiprotozoal bumped kinase inhibitors: A review.. Exp Parasitol 2017 Sep;180:71-83.
- Hines SA, Ramsay JD, Kappmeyer LS, Lau AO, Ojo KK, Van Voorhis WC, Knowles DP, Mealey RH. Theileria equi isolates vary in susceptibility to imidocarb dipropionate but demonstrate uniform in vitro susceptibility to a bumped kinase inhibitor.. Parasit Vectors 2015 Jan 20;8:33.
- Scoles GA, Ueti MW. Amblyomma cajennense is an intrastadial biological vector of Theileria equi.. Parasit Vectors 2013 Oct 23;6(1):306.
- Wang M, Guo W, Igarashi I, Xuan X, Wang X, Xiang W, Jia H. Epidemiological investigation of equine piroplasmosis in China by enzyme-linked immunosorbent assays.. J Vet Med Sci 2014 Apr;76(4):549-52.
- Awinda PO, Mealey RH, Williams LB, Conrad PA, Packham AE, Reif KE, Grause JF, Pelzel-McCluskey AM, Chung C, Bastos RG, Kappmeyer LS, Howe DK, Ness SL, Knowles DP, Ueti MW. Serum antibodies from a subset of horses positive for Babesia caballi by competitive enzyme-linked immunosorbent assay demonstrate a protein recognition pattern that is not consistent with infection.. Clin Vaccine Immunol 2013 Nov;20(11):1752-7.
- Peckle M, Pires MS, Dos Santos TM, Roier EC, da Silva CB, Vilela JA, Santos HA, Massard CL. Molecular epidemiology of Theileria equi in horses and their association with possible tick vectors in the state of Rio de Janeiro, Brazil.. Parasitol Res 2013 May;112(5):2017-25.
- Hall CM, Busch JD, Scoles GA, Palma-Cagle KA, Ueti MW, Kappmeyer LS, Wagner DM. Genetic characterization of Theileria equi infecting horses in North America: evidence for a limited source of U.S. introductions.. Parasit Vectors 2013 Feb 11;6:35.
- Kappmeyer LS, Thiagarajan M, Herndon DR, Ramsay JD, Caler E, Djikeng A, Gillespie JJ, Lau AO, Roalson EH, Silva JC, Silva MG, Suarez CE, Ueti MW, Nene VM, Mealey RH, Knowles DP, Brayton KA. Comparative genomic analysis and phylogenetic position of Theileria equi.. BMC Genomics 2012 Nov 9;13:603.
- Ueti MW, Mealey RH, Kappmeyer LS, White SN, Kumpula-McWhirter N, Pelzel AM, Grause JF, Bunn TO, Schwartz A, Traub-Dargatz JL, Hendrickson A, Espy B, Guthrie AJ, Fowler WK, Knowles DP. Re-emergence of the apicomplexan Theileria equi in the United States: elimination of persistent infection and transmission risk.. PLoS One 2012;7(9):e44713.
- Mealey RH, Kappmeyer LS, Ueti MW, Wagner B, Knowles DP. Protective effects of passively transferred merozoite-specific antibodies against Theileria equi in horses with severe combined immunodeficiency.. Clin Vaccine Immunol 2012 Jan;19(1):100-4.
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