Histomonas meleagridis

Histomonas meleagridis
Scientific classification
Domain:
(unranked):
Phylum:
Metamonada
Class:
Parabasalia
Order:
Trichomonadida
Family:
Monocercomonadidae
Genus:
Histomonas
Species:
H. meleagridis
Binomial name
Histomonas meleagridis
(Smith, 1895)

Histomonas meleagridis is a species of parasitic protozoan that infects a wide range of birds including chickens, turkeys, peafowl, quail and pheasants, causing infectious enterohepatitis, or histomoniasis (blackhead diseases). H. meleagridis can infect many birds, but it is most deadly in turkeys. It inhabits the lumen of cecum and parenchyma of liver, where it causes extensive necrosis. It is transmitted by another cecal parasite, the nematode Heterakis gallinarum.

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