Taxobox | color = khaki
name = "Sarcocystis"

image_width = 300px
image_caption = Sarcocystis cyst in a sheep oesophagus. The cyst is approximately 4mm across.
regnum = Protista
phylum = Apicomplexa
classis = Conoidasida
ordo = Eucoccidiorida
familia = Sarcocystidae
genus = "Sarcocystis"

Sarcocystis are a type of Protist. This apicomplexan parasite's life cycle is heteroxenous, meaning that it has more than one obligatory host in its life cycle. "Sarcocystis "relies on the predator-prey relationship of animals. Oocysts are passed through the feces of an infected individual where it undergoes sporogony and becomes infected itself. The oocysts then undergo lysis where the sporocysts are left out in the environment. An intermediate host such as a cow or pig will ingest a sporocyst. Sporozoites are then released in the body and migrate to the muscle tissue where it undergoes asexual reproduction. Once the intermediate host is eaten by the definitive host such as a dog or human, the parasite undergoes sexual reproduction to create macrogamonts and a mircogamonts. They create a zygote which develops into an oocyst, which is passed through the feces completing the life cycle.

Human infection is rare but can happen when undercooked meat is ingested. Symptoms include diarrhea, which may be mild and transient or severe and life threatening. Human outbreaks have occurred in Europe. Rats are a known carrier.

ee also

*Equine Protozoal Myeloencephalitis, caused by Sarcocystis neurona


Dr. Micheal Kent. Oregon State University. "Sarcocystis". May 5th 2006.

External links


"Sarcocystis cruzi" is the only species that is pathogenic to cattle.

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Look at other dictionaries:

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  • Sarcocystis — noun chief genus of the order Sarcosporidia • Syn: ↑genus Sarcocystis • Hypernyms: ↑protoctist genus • Member Holonyms: ↑Sarcosporidia, ↑order Sarcosporidia • Member Meronyms: ↑ …   Useful english dictionary

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  • Sarcocystis lindemanni — Saltar a navegación, búsqueda ? Sarcocystis lindemanni Quiste de Sarcocystis en músculo del …   Wikipedia Español

  • Sarcocystis — род простейших сем. Sarcocystidae, отр. Coccidiida, кл. споровиков, паразитирующих в тканях (чаще в мышцах) млекопитающих; три вида S. являются возбудителями саркоспоридиоза человека …   Большой медицинский словарь

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  • sarcocystis — sar·co·cys·tis …   English syllables

  • Sarcocystis — n. a genus of parasitic protozoans (see Sporozoa) that infect birds, reptiles, and herbivorous mammals. S. lindemanni, which occasionally infects humans, forms cylindrical cysts (sarcocysts) in the muscle fibres. In heavy infections these cysts… …   The new mediacal dictionary

  • Sarcocystis BOVIHOMINIS — вид саркоспоридий рода S., окончательным хозяином которого является человек, а промежуточным хозяином свиньи; возбудитель кишечного саркоспоридиоза у человека …   Большой медицинский словарь

  • Sarcocystis LINDEMANNI — вид саркоспоридий рода S., промежуточным хозяином которого является человек, окончательный хозяин не выяснен;. возбудитель мышечного саркоспоридиоза у человека …   Большой медицинский словарь

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