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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Usually only one generation is produced each year. There are also fly masks that fit around the face of the horse and prevent flies from depositing eggs on the animals’ head.

Gasterophilus spp. infections in horses from northern and central Kazakhstan.

Most single flies lay eggs on more than one host, which increases their chance of survival and dispersal. Gasterophilus is a genus of parasitic flies in the family Oestridaemore commonly known as botfly. According to Cogley and Cogleymating may not solely rely on the presence of horses or hilltops. Eggs hatch into a maggot within seven to 10 days of being laid. The larvae use their flat mandibles to abrade the tissue of the stomach. Warm water with appropriate insecticide can be used to induce the eggs to hatch and kill the larvae.

The species Gasterophilus is of the family Oestridaeand is more commonly referred to as the ‘Bot fly.

This article has been peer reviewed but is awaiting expert review. Tick, fly, and mosquito control — Lessons from the past, solutions for the future. Click here if you are interested in medicinal plants for controlling external parasites of livestock and pets. Gasterophilus intestinalis and Gasterophils.

Larvae are stimulated to gasterophlius by the horse licking or biting the attached, fully developed eggs. These compounds are used mainly as gels or pastes that are administered orally to the horses. Adult horses usually develop a certain level of immunity to Gasterophilus infections after repeated exposure. In this case, gastefophilus larvae enter the skin of humans and begin burrowing through the skin causing visible, sinuous, inflamed tracks accompanied by considerable irritation and itching Catts and Mullen The first stage larvae die soon after hatching if they do not reach the mouth.


The horse bot fly occasionally can cause what is called ocular myiasis, or invasion of the eye by first stage larvae. Learn more about parasite resistance and how it develops. Within this family are four subfamilies, including the Gasterophilinae, the stomach bot flies. Completion of the bot flies’ life cycle is dependent on the larvae consuming nutrients from tissues in the gastrointestinal tract of the horse Zurek This page was last edited on 8 Septemberat If available, follow more specific national or regional recommendations or regulations for the control of horse bot flies.

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Larvae attaching inside the mouth can cause major harm. Myiasis Producing Flies Flashcards. This veterinary medicine —related article is a stub. With the aim to contribute data on the species composition of Gasterophilus and on the seasonal variation of the infection pattern in southern Italy, native gasterrophilus were necropsied from January to December and Gasterophilus larvae were collected from the stomach, the small intestine and the rectum of each of them.

Gasterophilinae are all characterized with rows of smaller spines amongst rows of larger spines Colwell et.

They feed on tissues they abrade with their mouthparts. The stages of the life cycle are not restricted to certain seasons due to the varied climates found in different geographical locations.

Field observations of the host-parasite relationship associated with the common horse bot fly, Gasterophilus intestinalis. They are only found on pasture, as they do not survive well on stable bedding. Gsterophilus it is a fly, is has only one pair of wings. Other macrocyclic lactones abamectindoramectineprinomectinmilbemycin oximeselamectin are usually not approved for use on horses.

Once the male and female flies meet, they sink to the ground and copulation occurs within three to four minutes.


The female’s abdomen is elongated, curled under and serves as an ovipositor Zurek Gasterophius the host they do not migrate away from the fecal piles, but burrow gasterophilux the soil or in dry manure and pupate within 1 to 2 months.

This can disturb the proper functioning of these organs secretion, motility, etc. In other projects Wikimedia Commons. Afterwards these larvae can be easily brushed away or the warm water is mixed with an adequate larvicide that kills the hatching larvae.

Horse bot fly, Gasterophilus intestinalis DeGeerlarval infestation in the stomach of a horse. Although found throughout the entire state, geographical location determines seasonality of adult activity. Also, the pain and irritation to the stomach gasterophlius cause loss of appetite, which can affect nutrition and performance. Both are indicated for the control of L2- and L3 larvae in the gastrointestinal tract.

Adult male and female flies mate within a few days after emergence. Loss of appetite may develop due to the larva’s inhabitance Mullen and Durden The cause of gasterophiljs intestinalis, gasterophilus.

Gasterophilus spp. – WikiVet English

L3 attaches to the squamous gastric mucosa along the margo plicatus, in the case of G. This typically occurs during the early summer months. According to Mullen and Gsaterophilusthe Gasterophilinae appear to have originated in Africa. The development of L1 into L2 occurs on the pharynx. From Wikipedia, the free encyclopedia.

The larvae then remain and develop within the stomach for around months. Horse gastrointestinal myiasis caused by larvae of Gasterophilus zpp.

Diptera, Oestridae flies has a worldwide distribution and, where present, it is primarily caused by larvae of Gasterophilus intestinalis and Gasterophilus nasalis.

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