| Histomonas meleagridis | A protozoan flagellate (order Trichomonadida) parasitizing the intestine and liver of turkeys, chickens, and many other domestic and wild gallinaceous birds; it is nearly ubiquitous but rarely pathogenic in chickens; in the turkey, it causes histomoniasis. It is now considered to be in a family (Monocercomonadidae) that includes Dientamoeba. Synonym: Amoeba meleagridis. (05 Mar 2000) |
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| Histomonas |
a genus of ameboflagellate protozoa of the order Trichomonadida, parasitic in the cecum and liver of turkeys, chickens, pheasants, guinea fowl, and other wild and domestic fowl. H. melea´gridis is the only pathogenic species, being the etiologic agent of histomoniasis, which is especially severe in turkeys. It is usually transmitted in the eggs of the nematode coparasite Heterakis gallinae.
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