Eimeria is a genus of apicomplexan parasites that includes various species capable of causing .. mice (M. musculus) Eimeria weybridgensis – sheep (O. aries) Eimeria wobati – southern hairy-nosed wombat (L. latifrons) Eimeria zuernii – cattle (B. taurus). Eimeria zuernii is a species of the parasite Eimeria that causes diarrheic disease known as eimeriosis in cattle (Bos taurus), and mainly affects younger animals. Coccidiosis is usually an acute invasion and destruction of intestinal mucosa by protozoa of the genera Eimeria or Isospora. Clinical signs include diarrhea.

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The majority of the parasites life is in the environment and both survival of the parasite as well as developing into an infective oocysts depends on these factors. Sincethe sequencing and annotation of a further six avian Eimeria species genomes is in progress. There is a growing problem of drug resistanceas well as possible drug residues in the meat once the animal is butchered.

Development of Eimeria auburnensis in cell cultures. Pathogenicity depends on many factors; such as parasite species, viability, infectivity, virulence, tropism, host age, nutritional status, immunological competence, as well as prevailing environmental conditions temperature, moisture and management practices.

Eimeria zuernii

Eimeria Schneider During the endogenous phase, several rounds of asexual reproductionor schizogony take place, after which the sexual differentiation of gametes and fertilisation occurs. Parasites form environmentally-resistant oocysts which undergo faecal-oral transmission between hosts.

Infection with Eimeria results in life-long immunity to that particular parasite species, but does not give cross protection against other eimreia. In other projects Wikimedia Commons Wikispecies.


This results in the recognition of, and attachment to host cell receptors. In general, pathogenic Eimeria species, including E.

Eimeria – Wikipedia

Eimerix schizonts rupture, merozoites are released, which either go on to re-infect more enterocytes or develop into either male or female gametes via the process of gametogenesis.

These cause the epithelial cells to burst, which causes significant damage to the intestine epithelial layer, resulting in the release of blood, fluid, and electrolytes into the intestine.

Invasion requires the formation of a moving junction between parasite and host cell membranes. Eimeria zuernii is a very host specific zueenii that only infects cattle.

The genus is named after the German zoologist Theodor Eimer — Eimeriaa genus contains about 20 species. Selection and characteristics of a precocious and attenuated line”. Species of this genus infect a wide variety of hosts. From Wikipedia, the free encyclopedia.

Eimeria zuernii – Wikipedia

University of New Mexico. Poultry and Avian Biology Reviews. Each nucleus develops into a merozoite. Three species are in this genus. Membrane glyconjugates have been proposed as potential host cell receptors for Eimfria species.

Production of bovine coccidiosis with Eimeria zuernii.

Most coccidian species are considered to be highly host-specific and only parasitize single host species oioxenousalthough some species in birds and reptiles may parasitize closely-related hosts stenoxenous and a few species in fish may parasitize unrelated hosts euryxenous. Resolution of these lesions takes place in approximately ten days in calves which survivie. Following ingestion, oocysts and sporocysts zuernki in the intestines releasing their contained sporozoites which invade host cells to begin merogony.

The time from ingestion of the parasite to the first signs of disease prepatent period is days. Dinokaryota With a theca: Environmental factors can influence how fast new oocysts become infective and management of the animals living conditions and feed and how easily the animals get infected. Clinical disease is not usually manifest until cumulative tissue damage eeimeria with second or third generation schizogony.


The severity of the disease is directly dependent on the number of infective Eimeria oocysts that are ingested. Eimeria farasanii Eimeria farra Eimeria faurei Eimeria fernandoae Eimeria ferrisi Eimeria filamentifera Eimeria franklinii Eimeria fraterculae Eimeria freemani Eimeria fulva Eimeria funduli Eimeria gallatii Eimeria gallopavonis Eimeria gasterostei Eimeria gilruthi Eimeria glenorensis Eimeria gokaki Eimeria gonzalei Eimeria gorakhpuri Eimeria granulosa Eimeria grenieri Eimeria guevarai Eimeria hagani Eimeria haneki Eimeria hasei Eimeria hawkinsi Eimeria hermani Eimeria hindlei Eimeria hirci Eimeria hoffmani Eimeria hoffmeisteri Eimeria hybognathi Eimeria ictaluri Eimeria illinoisensis Eimeria innocua Eimeria intestinalis Eimeria intricata Emeria iroquoina Eimeria irresidua Eimeria ivitaensis Eimeria judoviciani Eimeria kinsellai Eimeria koganae Eimeria kotlani Eimeria krijgsmanni Eimeria krylovi Eimeria kunmingensis Eimeria lagopodi.

New hosts are infected when they ingest sporulated oocysts contaminating food or water supplies faecal-oral transmission.

Retrieved from ” https: Schizonts range in size depending on parasite species, location in the host and stage of maturity. These gametes fuse to form an oocyst, which is then released in its non-infectious, unsporulated form through the faeces of the host.