Putative Otobius megnini-associated clinical signs in horses in South Africa (2012–2018)

Journal of the South African Veterinary Association


 
 
Field Value
 
Title Putative Otobius megnini-associated clinical signs in horses in South Africa (2012–2018)
 
Creator Miller, Sean M.
 
Subject Veterinary; Parasitology; Acarology equine, tick, Otobius megnini, veterinary, parasitology, acarology
Description Otobius megnini has been associated with certain clinical conditions in horses in both California and Mexico. A number of cases similar to those described previously have been identified by the author in South Africa. This case report summarises these cases to demonstrate that the clinical condition occurs readily in South Africa and may be increasing in occurrence. The disease has minimal coverage in the literature making it more likely that a veterinarian, unfamiliar with the disease, will miss the diagnosis. The author would like to make veterinarians aware of this as a potential differential diagnosis. This study is a retrospective review of clinical data. Clinical records of patients with similar clinical signs and treatment were reviewed and grouped together as relevant cases for this case report. Ten cases of O. megnini associated neuromuscular dysfunction are reported, suggesting a link between the occurrence of the tick and the clinical condition. Clinical signs include third eyelid prolapse, localised muscle fasciculations, elevated heart rate and limb stamping. Serum chemistry changes commonly show increased aspartate aminotransferase and creatine kinase enzymes activities. The occurrence of the ticks within South Africa and the increasing number of cases presented demonstrate the need for more investigation into the pathophysiology of this condition.
 
Publisher AOSIS
 
Contributor
Date 2020-07-07
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — Retrospective data analysis
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/jsava.v91i0.1983
 
Source Journal of the South African Veterinary Association; Vol 91 (2020); 6 pages 2224-9435 1019-9128
 
Language eng
 
Relation https://jsava.co.za/index.php/jsava/article/view/1983/2563 https://jsava.co.za/index.php/jsava/article/view/1983/2562 https://jsava.co.za/index.php/jsava/article/view/1983/2564 https://jsava.co.za/index.php/jsava/article/view/1983/2561
 
Coverage KwaZulu-Natal; South Africa 2012-2018 —
Rights Copyright (c) 2020 Sean M. Miller https://creativecommons.org/licenses/by/4.0