Eimeria

A genus of coccidial protozoa that is highly pathogenic, especially in young domesticated mammals and birds.

A genus of protozoan parasites in the family Eimeriidae. There are many species (see below), mostly in birds and herbivores. They are the principal cause of coccidiosis, which also has other causes. See cystoisospora, isospora, tyzzeria, wenyonella.
Commonly listed Eimeria spp. and their hosts are listed below:
E. abramovi—wild duck, geese; E. acervulina—domestic poultry, quail; E. adenoides—turkey; E. ahsata—sheep, goats; E. alabamensis—cattle; E. alijevi—goats; E. alpacae—llama, alpaca; E. anatis—mallard, domestic duck; E. ankarensis—water buffalo; E. anseris—domestic geese, wild geese; E. aspheronica—goats; E. arkhari—sheep, goats; E. arloingi—sheep, goats; E. auburnensis—cattle; E. augusta—grouse; E. aurata—fish; E. azerbaidschanica—water buffalo.
E. bactriani—one- and two-humped camel; E. bakuensis—sheep; E. bareillyi—water buffalo; E. battakhi—domestic duck; E. bombaynsis—zebu cattle; E. bonasae—grouse; E. boschadis—wild duck, geese; E. bovis—cattle, zebu, water buffalo; E. brantae—wild duck, geese; E. brasiliensis—cattle, zebu, water buffalo; E. brinkmanni—rock ptarmigan; E. brunetti—domestic poultry; E. bucephalae—wild duck, geese; E. bukidnonensis—cattle, zebu, buffalo.
E. cameli—one- and two-humped camels; E. canadensis—domestic cattle, zebu, bison, water buffalo; E. canis—dogs and cats; E. caprina—goats; E. caprovina—goats; E. carinii—rats; E. carpelli—fish; E. caviae—guinea pig; E. cerdonis—pig; E. christenseni—domestic goat; E. christianseni—mute swan; E. clarkei—lesser snow goose; E. coecicola—rabbit; E. colchici—pheasant; E. columbae—pigeon; E. columbarum—rock dove; E. coturnicus—quail; E. crandallis—domestic sheep, small wild ruminants; E. cylindrica—domestic cattle, zebu, water buffalo; E. cyprini—fish.
E. danailovi—mallard; E. danielle—domestic sheep; E. debliecki—pig; E. dispersa—turkey; E. dolichotis—Patagonian cavy; E. dromedarii—one- and two-humped camels.
E. ellipsoidalis—domestic cattle, zebu, Euro-pean bison, water buffalo; E. elongata—domestic rabbit; E. exigua—rabbit, Greenland hare.
E. falciformis—mouse; E. fanthami—rock ptarmigan; E. farri—white fronted goose; E. faurei—sheep, small wild ruminants; E. ferrisi—mouse; E. fulva—wild geese.
E. gallopavonis—turkey; E. gilruthi—sheep, goats; E. gokaki—buffalo; E. gonzalei—sheep; E. gorakhpuri—guinea fowl; E. granulosa—domestic and wild sheep; E. grenieri—guinea fowl; E. guevarai—pig.
E. hagani—poultry; E. hasei—rats; E. hawkinsi—sheep, goats; E. hermani—wild geese; E. hindlei—mouse; E. hirci—goats.
E. illinoisensis—cattle; E. innocua—turkey; E. intestinalis—rabbit; E. intricata—sheep, wild small ruminants; E. irresidua—rabbit, jackrabbit.
E. jolchijevi—goats; E. keilini—mouse; E. kocharli—goats; E. kofoidi—partridge; E. koganae—wild duck, geese; E. kosti—cattle; E. kotlani—domestic geese; E. krijgsmanni—mouse.
E. labbeana—pigeon; E. lagopodi—ptarmigan; E. lamae—alpaca; E. langeroni—pheasant; E. leuckarti—horse; E. lyruri—partridge.
E. macusaniensis—llama, alpaca; E. magna—rabbit, hare; E. magnalabia—wild geese; E. mandali—peafowl; E. marsica—sheep; E. matsubayashii—domestic rabbit; E. maxima—poultry; E. mayurai—peafowl; E. media—domestic and wild rabbit; E. megalostromata—pheasant; E. meleagridis—turkey; E. meleagrimitis—domestic turkey; E. mitis—poultry; E. mivati—domestic fowl; E. miyairii—rat; E. mundaragi—cattle, zebu; E. musculi—mouse.
E. nadsoni—grouse; E. nagpurensis—rabbit; E. necatrix—domestic fowl; E. neodebliecki—pig, wild pig; E. neoleporis—rabbit; E. nieschultzi—rat; E. ninakohlyakimovae—sheep, goats and small wild ruminants; E. nocens—domestic and wild geese; E. nochti—rat; E. norvegicus—rat; E. numida—guinea fowl.
E. ovina—domestic sheep, small wild ruminants; E. ovoidalis—buffalo.
E. pacifica—pheasant; E. pallida—domestic sheep and goats; E. parva—domestic sheep and goats, small wild ruminants; E. parvula—gooses; E. pavonina—peafowl; E. pavonis—peafowl; E. pelleryi—bactrian camel; E. pellita—cattle; E. perforans—rabbit, hare; E. perminuta—pig; E. peruviana—llama; E. phasiani—pheasant; E. piriformis—domestic rabbit; E. polita—pig; E. porci—pig; E. praecox—poultry; E. procera—partridge; E. punctata—sheep; E. punoensis—alpaca.
E. rajasthani—dromedary; E. ratti—rat.
E. saitamae—duck; E. scabra—domestic and wild pig; E. schachdagica—duck; E. schueffneri—mouse; E. scrofae—pig; E. separata—rat; E. solipedum—horse; E. somateriae—wild duck; E. spinosa—pig; E. stiedai—rabbit, hare; E. stigmosa—domestic goose; E. striata—wild goose; E. subepithelialis—carp; E. subrotunda—turkey; E. subspherica—cattle, zebu, water buffalo; E. suis—domestic pig.
E. tenella—domestic poultry; E. tetricis—grouse; E. thianethi—buffalo; E. tropicalis—pigeon; E. truncata—domestic and wild goose; E. truttae—salmon.
E. uniungulati—horse, mule; E. weybridgensis—sheep; E. wyomingensis—cattle, zebu, water buffalo; E. zuernii—cattle, zebu, water buffalo.

The noun has one meaning:

Meaning #1: parasitic on the digestive epithelium of vertebrates and higher invertebrates
  Synonym: coccidium

Eimeria
Eimeria Maxima oocysts
Scientific classification
Domain: Eukaryota Kingdom: Chromalveolata Superphylum: Alveolata Phylum: Apicomplexa Class: Conoidasida Order: Eucoccidiorida Family: Eimeriidae Genus: Eimeria Schneider, 1875
Species
Eimeria acervulina Eimeria ahsata Eimeria bovis Eimeria brunetti Eimeria fraterculae Eimeria maxima Eimeria meleagridis Eimeria mitis Eimeria necatrix Eimeria praecox Eimeria stiedae Eimeria tenella Eimeria zurnii etc.

Eimeria is a genus of Apicomplexan parasites that includes various species responsible for the poultry disease coccidiosis. Medications are available for the parasite; however, drug resistance is common as well as possible drug residues in the meat once the animal is butchered. Vaccines have been developed but one vaccine will only cover one species and not others. So far the best practice is to vaccinate the chicks once they hatch from the egg so they are immune for life. Symptoms of Eimeria infection include bloody diarrhea due to intestinal epithelium dying off since a large number of oocysts and merozoites burst out of the cells. Necrotic tissue clogs the cecum causing the organ to die.

Eimeria life cycle

v • d • e SAR: Chromalveolata: Alveolata Ciliophora Postciliodesmatophora Heterotrichea (Stentor) · Karyorelictea (Loxodes) Intramacronucleata Spirotrichea (Stylonychia) · Litostomatea (Didinium, Balantidium) · Phyllopharyngea (Tokophrya) · Nassophorea (Nassula) · Colpodea (Colpoda) · Oligohymenophorea (Tetrahymena, Ichthyophthirius, Vorticella, Paramecium) · Plagiopylea (Plagiopyla) · Prostomatea (Coleps) Other Cryptocaryon Myzozoa Apicomplexa Aconoidasida Plasmodiidae/Haemosporida (Plasmodium, Haemoproteus, Leukocytozoon) Piroplasmida (Babesia, Theileria) Conoidasida Coccidia Eu- Adele- Haemogregarina, Hepatozoon, Karyolysus Eimeri- Cryptosporidiidae (Cryptosporidium) Eimeriidae (Isospora, Cyclospora, Eimeria) Sarcocystidae (Toxoplasma, Sarcocystis, Besnoitia, Neospora) Agamo- Rhytidocystidae (Rhytidocystis) Gregarinia Gregarinasina (Gregarina) Colpodellidae Colpodella Related Chromera Dinoflagellata Dinokaryota With a theca: Peridiniales (Pfiesteria, Peridinium) · Gonyaulacales (Ceratium, Gonyaulax) · Prorocentrales (Prorocentrum) · Dinophysiales (Dinophysis, Histioneis, Ornithocercus, Oxyphysis) Without theca: Gymnodiniales (Gymnodinium, Karenia, Karlodinium, Amphidinium) · Suessiales (Polarella, Symbiodinium) Noctilucales (Noctiluca) Syndinian Syndiniales: Amoebophryaceae (Amoebophyra) · Duboscquellaceae (Duboscquella) · Syndiniaceae (Hematodinium, Syndinium) Other Oxyrrhis Related Perkinsus

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