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Oestrus ovis, the sheep bot fly, is a widespread species of fly of the genus Oestrus. It is known for its parasitic predation and damage to sheep, deer, goats and sometimes cattle. There have also been many records of horse, dog [1] and human infestation. In some areas of the world it is a significant pest which affects the agricultural economy ...
In the case of stomach-bots it is often uncertain how much clinical disease or loss of production small levels of infestation causes the host. With infestations of warble-flies and nasal-bots severe distress to the hosts may be caused and there are production losses from reduction of value of cattle hides, and reduced grazing time by sheep.
Gasterophilus nasalis (also called throat bot fly or horse nasal bot fly [2]) is a species of the genus Gasterophilus and family Oestridae. This species is found worldwide, but prominently present within the summer months. This species of G. nasalis primarily targets equines, such as horses, donkeys and the plains zebra. [3]
enzootic nasal adenocarcinoma; foot-and-mouth disease; mastitis; Nairobi sheep disease orthonairovirus (NSDV) infection; orf, also known as contagious ecthyma, contagious pustular dermatitis, infectious labial dermatitis, thistle disease, sore mouth, or scabby mouth; ovine encephalomyelitis (louping ill) ovine progressive pneumonia (OPP)
Gasterophilus nigricornis (broad-bellied horse bot) – ranges from the Middle East to China, infects duodenum of horses and donkeys; Gasterophilus pecorum (dark-winged horse bot) – the most pathogenic species in the genus. Ranges through the Old World and infects the mouth, tongue, esophagus and stomach of horses, donkeys and zebras
The word "bot" in this sense means a maggot. [4] A warble is a skin lump or callus such as might be caused by an ill-fitting harness, or by the presence of a warble fly maggot under the skin. The human botfly, Dermatobia hominis , is the only species of botfly whose larvae ordinarily parasitise humans, though flies in some other families ...
Symptoms in domestic sheep can range from mild respiratory disease, severe pneumonia and even death. [1] Clinical and subclinical symptoms may be present in domestic sheep. Clinical symptoms may include fever, lethargy, decreased appetite, nasal discharge, coughing, and decreased milk production in ewes. [ 1 ]
F. necrophorum is also a cause for lameness in sheep. Its infection is commonly called scald or foot rot. It can last for several years on land used by either sheep or cattle, and is found on most land of this type throughout the world. Due to its survival length in these areas, it is unrealistic to try to remove it.