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Nematodes in Horses I - Coggle Diagram
Nematodes in Horses I
Oxyuris equi (Pinworm)
females up to 15 cm, males less than 1.0 cm in length
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pruritus of perianal region, tail rubbing
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Gravid female migrates to the anus and lays her eggs in clumps in a yellowish-grey, sticky, gelatinous material on the perineal skin
The eggs attach to feeding troughs, walls and floors of stables
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tape test base of tail, base of tail itching
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Light and float in the air to many locations, survive well in harsh conditions
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Large Strongyles bloodworms, sclerostomes, red worms
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Strongylus vulgaris
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enter cranial mesenteric artery (blood supply to the intestine). The larvae migrate within the artery, spend up to several months within, causing a verminous arteritis
Strongylus edentatus
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migrate in the portal veins to the liver, where they spend several weeks. Larvae then leave the liver, return to the large intestine via the mesentery
Strongylus equinus
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travel across peritoneal cavity and enter the liver, where they spend several weeks. Larvae then migrate across the pancreas to the caecum
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destructive feeders, resides in large intestine/cecum
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aneurysms, infarcts, organ damages
Colic (from interference with blood supply), anemia, weight loss or poor weight gain, hind-limb lameness, death
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