Eimeria is a genus of apicomplexan parasites that includes various species capable of causing the disease coccidiosis in animals such as cattle, poultry and smaller ruminants including sheep and goats.[2]Eimeria species are considered to be monoxenous because the life cycle is completed within a single host, and stenoxenous because they tend to be host specific, although a number of exceptions have been identified. Species of this genus infect a wide variety of hosts. Thirty-one species are known to occur in bats (Chiroptera), two in turtles, and 130 named species infect fish. Two species (E. phocae and E. weddelli) infect seals. Five species infect llamas and alpacas: E. alpacae, E. ivitaensis, E. lamae, E. macusaniensis, and E. punonensis. A number of species infect rodents, including E. couesii, E. kinsellai, E. palustris, E. ojastii and E. oryzomysi. Others infect poultry (E. necatrix and E. tenella), rabbits (E. stiedai) and cattle (E. bovis, E. ellipsoidalis, and E. zuernii).[3] For full species list, see below.
The most prevalent species of Eimeria that cause coccidiosis in cattle are E. bovis, E. zuernii, and E. auburnensis. In a young, susceptible calf it is estimated that as few as 50,000 infective oocysts can cause severe disease.[4]Eimeria infections are particularly damaging to the poultry industry and costs the United States more than $1.5 billion in annual losses.[5] The most economically important species among poultry are E. tenella, E. acervulina, and E. maxima.[6] The oocysts of what was later called Eimeria stiedai were first seen by the pioneering Dutch microscopist Antonie van Leeuwenhoek (1632–1723) in the bile of a rabbit in 1674. The genus is named after the German zoologist Theodor Eimer (1843–1898).
^Donald W. Duszynski, Steve J. Upton & Lee Couch. "Taxonomic Summary of Genera within the Eimeriidae". University of New Mexico. Archived from the original on 4 October 2013. Retrieved November 8, 2010.
^Chartier, Paraud (2012). "Coccidiosis due to Eimeria in sheep and goats, a review". Small Ruminant Research. 103 (1): 84–92. doi:10.1016/j.smallrumres.2011.10.022.
^Fayner R (1980). "Epidemiology of protozoan infections: the coccidia". Veterinary Parasitology. 6 (1–3): 75–103. doi:10.1016/0304-4017(80)90039-4.
^Daugschies A, Najdrowski M (2005). "Eimeriosis in Cattle: Current Understanding". Veterinary Medicine. 52 (10): 417–427. doi:10.1111/j.1439-0450.2005.00894.x. PMID 16364016.
^Shirley MW, Ivens A, Gruber A, et al. (2004). "The Eimeria genome projects: a sequence of events". Trends in Parasitology. 20 (5): 199–201. doi:10.1016/j.pt.2004.02.005. PMID 15105014.
Eimeria tenella is a species of Eimeria that causes hemorrhagic cecal coccidiosis in young poultry. It is found worldwide. This species has a monoxenous...
Eimeria bovis is a parasite belonging to the genus Eimeria and is found globally. The pathogen can cause a diarrheic disease in cattle (Bos taurus) referred...
Eimeria stiedae is a species of Eimeria that causes hepatic coccidiosis in rabbits. It was observed for the first time by Antonie van Leeuwenhoek in 1674...
different Eimeria, Eimeria kinsellai, has been found in Florida marsh rice rats. E. palustris differs from other Eimeria found in rice rats, such as Eimeria couesii...
Eimeria nieschulzi is an apicomplexan parasite of the genus Eimeria that infects the brown rat (Rattus norvegicus). Dieben, C. P. A. (1924). “Over de...
Eimeria maxima is a protozoan that causes coccidiosis in poultry. It is located in the middle part of the intestine, on either side of Meckel's diverticulum...
to use Arctic hares as a host: protozoans (Eimeria exigua, Eimeria magna, Eimeria perforans, and Eimeria sculpta); nematodes (including Filaria and Oxyuris...
Eimeria brunetti is a species of Eimeria that causes hemorrhagic intestinal coccidiosis in poultry worldwide. Lesions are limited to lower small intestine...
different Eimeria, Eimeria palustris, has been found in Alabama marsh rice rats. E. kinsellai differs from other Eimeria found in rice rats, such as Eimeria couesii...
Eimeria necatrix is a species of Eimeria that causes very severe intestinal coccidiosis in older poultry characterized by congestion, hemorrhage, necrosis...
Eimeria zuernii is a species of the parasite Eimeria that causes diarrheic disease known as eimeriosis in cattle (Bos taurus), and mainly affects younger...
Eimeria arlongi is a species of Eimeria that causes clinical coccidiosis in goats. It and Eimeria ninakohlyakimovae are two of the most pathogenic species...
Eimeria bufomarini is a species of coccidium, known to infect the epithelial cells of the intestines of Brazilian cane toads. Duszynski, Donald W.; Matthew...
and when grazing. Symptoms are generally caused by the species Eimeria zuernii and Eimeria bovis and include loss of appetite, fatigue, dehydration, and...
Clegg S (ed.). "An epidemiological study of gastrointestinal nematode and Eimeria coccidia infections in different populations of Kazakh sheep". PLOS ONE...
Eimeria couesii is an apicomplexan parasite of the genus Eimeria that infects the intestine of the rice rat Oryzomys couesi in Mexico. It has an oocyst...
Eimeria acervulina is a species of Eimeria that causes coccidiosis in poultry worldwide. Affected birds tend to appear depressed with reduced appetite...
Eimeria fraterculae is a species of alveolates belonging to the family Eimeriidae. It causes renal coccidiosis in the Atlantic puffin (Fratercula arctica)...
Eimeria meleagridis is a species of coccidia found worldwide, which causes mild disease in young turkeys aged 4–8 weeks. The parasite causes disease in...
create oocysts include Eimeria, Isospora, Cryptosporidium, and Toxoplasma. Life cycle of the Babesia parasite Life cycle of the Eimeria parasite Life cycle...
may be more closely related to some species of Eimeria that infect birds than the rest of the genus Eimeria is. Relationships among various coccidia estimated...
"Coccidia of Brazilian edentates: Eimeria cyclopei n.sp. from the silky anteater, Cyclopes didactylus (Linn.) and Eimeria choloepi n.sp. from the two-toed...
host specificity, and molecular phylogeny of Eimeria ranae Dobell, 1909, with a review of anuran-host Eimeria (Apicomplexa: Eimeriorina)". J. Eukaryot. Microbiol...
harbours a number of parasites. In 2021, a study showed that ten species of Eimeria, which are apicomplexan protozoans living in the digestive tract, were...
giant eland revealed the presence of a newly found species Eimeria derbani, of genus Eimeria, which consists of Apicomplexan parasites. The sporulation...
a broad-spectrum anticoccidial drug, preventing seven main strains of Eimeria coccidium. It leaves no residues in tissues.[citation needed] It can be...
bisulfate and coccidiostat on intestinal lesions and growth performance of Eimeria spp.–challenged broilers". Poultry Science. 99 (10): 4769–4775. doi:10...
(Baycox, Bayer) and diclazuril (Vecoxan, Janssen-Cilag) in the control of Eimeria spp. in lambs". Parasitology Research. 112 (Suppl 1): 163–8. doi:10...
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