Entomologic evaluation of insect hypersensitivity in horses.
Potential methods of incriminating insects as the cause of insect hypersensitivity are presented. A listing of the biting midges known to attack horses in North America is presented also. An example of how species may be determined to be the cause of the hypersensitivity is given using data from a recent study in Florida. Light trap collections indicated the temporal and geographic distribution of potential contributing species and collections made by vacuuming horses further delineated species by proving they feed on horses and the correct locations on the horses to match lesion distribution. Culicoides hypersensitivity in horses in Florida seems to be caused by a series of species active and feeding on the horses at different times of the year.
Greiner
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Department of Infectious Diseases, College of Veterinary Medicine, University of Florida, Gainesville, USA.
D000818:Animals; D002519:Ceratopogonidae / Q000276:immunology; D004478:Ectoparasitic Infestations / Q000150:complications / Q000453:epidemiology / Q000662:veterinary*; D006734:Horse Diseases / Q000453:epidemiology / Q000209:etiology* / Q000469:parasitology; D006736:Horses; D006967:Hypersensitivity / Q000209:etiology / Q000469:parasitology / Q000662:veterinary*; D009656:North America / Q000453:epidemiology; D012867:Skin / Q000469:parasitology