Species composition of Gasterophilus spp. (Diptera, Oestridae) causing equine gastric myiasis in southern Italy: parasite biodiversity and risks for extinction. Vet Parasitol. Jan 15;() doi: / Epub Nov Gasterophilus spp. infections in horses from northern and. Biology, prevention and control of HORSE BOT FLY infections, Gasterophilus spp . Species, occurrence, distribution, incidence, prevalence, life.

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These bots larvae can create a mild to moderate gastritis and ulceration of the stomach, causing pain when eating.

Gasterophilus spp in Horses

After the fly emerges from the pupa, it quickly finds a mate. Finding the yellow to whitish eggs on the animal’s sp can be helpful. The only reliable diagnosis requires demonstrating larvae in the feces.

This page has been accessed 27, times. Nowadays very effective chemical control can be achieved with macrocyclic lactonesamong which ivermectin and moxidectin are approved for use on horses in most countries. They mature in the following spring or early summer generally between May and Septemberdetach from their surface and are passed out in the host faeces.

Navigation menu Personal tools Knowing the local seasonal behavior gasteropnilus the flies can also help to estimate whereas the observed symptoms could be due to these flies or to other unrelated factors. Abdominal x-rays and ultrasound will be used to check for any damage or blockages in the intestines or stomach.

Horse bot flies are Dipteran flies two wings of the species Gasterophilus that belong to the the family Oestridae.

When the first instar larvae burrow into the mouth, the horse may experience severe irritation, as well as the development of pus pockets and loosened teeth. The stages of the life cycle are not restricted to certain seasons due to the varied climates found in different geographical locations. However, this procedure is labor-intensive and usually unfeasible if many horses has to be protected. L3 attaches to the squamous gastric mucosa along the margo plicatus, in the case of G. Gasterophilus is a genus of parasitic flies in the family Oestridaemore commonly known as botfly.


Dispersal also occurs during larval stages by transport of infested equines from one location to another Zurek There are three different types of gasterophilus spp, which are gasterophilus intestinalis, gasterophilus. Massive infections can lead to diarrhea, colic, weight losses, and even perforations and peritonitis. This means that if a particular product has not achieved the expected control, it is most likely because the product is not adequate or it was not used correctly, not because the parasites have become resistant.

The horse bot fly causes indirect damage to the horse through attempts at egg laying. Adult bot flies then emerge and the cycle repeats. L2- and L3-larvae attaching to the stomach or intestinal walls can cause swellings, erosions, and other damages on the affected tissues.

Gasterophilus spp in Horses – Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost

Removing the Eggs Removal of the eggs is a long and gasterophikus job, but necessary to control the infestation. Feces should be cleaned and transported away since this is the area where the final development occurs before the fly emerges. In regions with moderate or cold climate e.

They are laid in different areas according to species; G. Both are indicated for the control of L2- and L3 larvae in the gasterolhilus tract. The adult horse bot fly emerges after a three to 10 week period during the summer or fall season. Ovipositing on the rear legs appears to be discriminated against by most flies, whereas age, breed, size, and sex do not appear to be a factor Cogley and Cogley Although accidental, the horse bot also has been reported in man gasterphilus either ocular gastwrophilus or cutaneous skin myiasis Kaufman et al.


This page was last modified on 4 Juneat Next, the veterinarian will check for lameness by looking at the way your pet moves while they walk and trot.

Currently, the horse bot fly, G. Only one generation is produced per year. The larvae use their flat mandibles to abrade the tissue of the stomach. This can cause disturb mastication, pain on eating and swallowing, strongly restrict the tongue movements, etc.

Gasterophilus – Wikipedia

Other equid species, including mules and donkeys, can also serve as hosts. By using this site, you agree to the Terms of Use and Privacy Policy.

Occasionally the feeding activity of L2 and L3-larvae may even break larger blood vessels in the gut’s lining with subsequent blood loss and anemia. If available, follow more specific national or regional recommendations or regulations for the control of horse bot flies.