- Eimeria stiedae
Taxobox
color = khaki
name = "Eimeria stiedae"
regnum =Protista
phylum =Apicomplexa
classis =Conoidasida
ordo =Eucoccidiorida
familia =Eimeriidae
genus = "Eimeria "
species = "E. stiedae""Eimeria stiedae" is a species of "
Eimeria " that causes hepaticcoccidiosis inrabbits .Life cycle
The rabbits ingest sporulated
oocysts . Sporulated oocyst contain foursporozoites that hatch and travel via thehepatic portal vein to the liver and eventually penetrate thebile duct epithelium , where they undergo asexual reproduction knownschizogony . Rupture of the schizont consequently cause epithelial cell rupture and death. Merozoites will penetrate other cells and create more merozoites for one to several rounds. Eventually a merozoite becomes a malemicrogamecyte and asexually reproduces in epithelial cells. A ruptured microgamecyte infects a cell with the femalemacrogamecyte and through sexual reproduction create azygote . The zygote develops a protective shell before expulsion in the bile excreation and then the feces as an oocyst.Pathogenesis and Pathology
The schizonts in the bile duct cause bile duct
hyperplasia , and blockage of bile ducts leading tohepatomegaly and henceicterus . Due to liver failure, the abdomen will be distended with fluid.Diagnosis
The presence of oocyst on fecal flotation or
impression smear of the liver are diagnostic forcoccidiosis . The prepatent period is 18 days and it takes 3 days for sporulation to occur.
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