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Eimeriorina
Eimeriorina is a suborder of phylum Apicomplexa. All species in this clade are homoxenous or facultatively homoxenous. Merogony, gamogony and oocyst formation all occur within the same host. The hosts may be vertebrates or invertebrates. Erroneous identifications of species is a major problem in coccidian systematics and it is likely that some of the genera and species will be revised. Taxonomy There are 12 families, 2 subfamilies and 50 genera recognised in this suborder. The genus ''Eimeria'' with ~1500 species is the largest genus in this suborder. Notes One genus is entirely entomoxenous (parasitic on insects) — '' Barrouxia''. The taxonomic status of ''Atoxoplasma ''Atoxoplasma'' is a genus of parasitic alveolates in the phylum Apicomplexa. The species in this genus infect birds. They are spread by the orofaecal route. History This genus was created by Garnham in 1950. The history of this genus has been ...'' remains unclear. References Conoidasida SAR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goussia
''Goussia'' is a taxonomic genus, first described in 1896 by Labbé, containing parasitic protists which largely target fish and amphibians as their hosts. Members of this genus are homoxenous and often reside in the gastrointestinal tract of the host, however others may be found in organs such as the gallbladder or liver.Dogga, S. K., Bartošová-Sojková, P., Lukeš, J., & Soldati-Favre, D. (2015). Phylogeny, Morphology, and Metabolic and Invasive Capabilities of Epicellular Fish Coccidium Goussia janae. Protist, 166(6), 659–676. https://doi.org/10.1016/j.protis.2015.09.003 The genera Goussia, as current phylogenies indicate, is part of the class Conoidasida, which is a subset of the parasitic phylum Apicomplexa; features of this phylum, such as a distinct apical complex containing specialized secretory organelles, an apical polar ring, and a conoid are all present within Goussia, and assist in the mechanical invasion of host tissue.Morrissette, N. S., & Sibley, L. D. (2002). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eimeria
''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. ''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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margolisiella
''Margolisiella'' is a genus of parasitic alveolates belonging to the phylum Apicomplexa. History This genus was created in 1997 by Desser and Bower for a group of protozoa that infect little neck clams (''Protothaca staminea'').Desser SS, Bower SM (1997) ''Margolisiella kabatai'' gen. et sp. n. (Apicomplexa: Eimeriidae), a parasite of native littleneck clams, ''Protothaca staminea'', from British Columbia, Canada, with a taxonomic revision of the coccidian parasites of bivalves (Mollusca: Bivalvia). Folia Parasitol (Praha) 44(4):241-247 The genus is named after Leo Margolis, a marine biologist. Four species were transferred from the genus ''Pseudoklossia'' to ''Margolisiella'': ''Margolisiella chitonis'', ''Margolisiella haliotis'', ''Margolisiella patellae'' and ''Margolisiella tellinovum''. Taxonomy There are six species currently recognised in this genus. Description These are monoxenous parasites of marine bivalve molluscs. They infect primarily the renal epithelium. Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gousseffia
''Gousseffia'' is a genus of parasitic alveolates belonging to the phylum Apicomplexa. This genus was originally named '' Yakimovella'' after the parasitologist Yakimoff.Levine ND, Ivens V (1979) The coccidia (Protozoa, Apicomplexa) of insectivores. Revista iber Parasit 39 (1-4): 269 Levine in 1980 noted that this genus name was already in use and renamed the genus ''Gousseffia''.Levine ND (1980) Some corrections of coccidian (Apicomplexa: Protozoa) nomenclature. J Parasitol 66: 830-834 Taxonomy There is only one described species in this genus - ''Gousseffia erinacei''. Life cycle Little is known about this genus. It is presumably transmitted by the orofaecal route. Each oocysts has 8 sporocysts. Each sporocyst has numerous sporozoite Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epieimeria
''Epieimeria'' is a genus of parasitic alveaolates of the phylum Apicomplexa. The genus was created in 1981 by Dyková and Lom. Species in this genus were earlier classified as ''Eimeria''. Taxonomy Species in this genus infect fish. Description Like other eimerians, the species in this genus undergo intracellular merogony and gametogony.Molnar K, Baska F (1986) Light and electron microscopic studies on ''Epieimeria anguillae'' (Léger & Hollande, 1922), a coccidium parasitizing the European eel, ''Anguilla anguilla'' L. J Fish Dis 9 (2) 99–110 Trophozoites and both the merogonic and gametogonic stages develop in a parasitophorous vacuole which lies half embedded in the epithelial cell and protrudes into the intestinal lumen. The parasitophorous vacuole itself is surrounded by a single membrane but towards the intestinal lumen it is also covered by the cell membrane. Sporogony takes place outside the fish or intercellularly. The wall of the sporocyst opens at its apex thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorisa
''Dorisa'' is a genus of parasitic alveolates in the phylum Apicomplexa. The genus was separated from the genus '' Dorisiella'' by Levine in 1908.Levine ND (1980) ''Dorisa'' n. gen. (Protozoa, Apicomplexa, Eimeriidae). J Parasitol 66(1):11 ''Dorisiella'' was created for a parasite infecting a marine polychaete by Ray in 1930. Levine separated off a number of species that while morphologically similar occurred in vertebrates rather that polychaetes. Life cycle The species in this genus infect the gastrointestinal wall of vertebrates. Description Genus diagnosis is dependent on the oocyst Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism is ...: there is a definite cell wall in this genus whereas in ''Dorisiella'' the oocyst wall is membrane like. Host records *''D. harpia'' - lesse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diaspora (protozoa)
''Diaspora'' is a genus in the phylum Apicomplexa, first described by Leger in 1898.Leger L (1898) Essai sur la classification des coccidies et description de quelques especes nouvelles ou peu connues. Annales du Musee d'Histoire Naturelle de Marseille, Serie II, Bulletin Notes Zoologiques, Geologiques, Paleontologiques Variétés 1: 71-123 Taxonomy There is one species in this genus - ''Diaspora hydatidea''. This species was isolated from a millipede (''Polydesmus'' species) This genus was created for those Eimeriidae whose oocysts are unknown but have sporocysts each containing a single sporozoite Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism is .... As such it is poorly defined and may be revised in the future. References Apicomplexa genera {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclospora
''Cyclospora'' is a genus of apicomplexan parasites. It includes the species ''Cyclospora cayetanensis'', the causative agent of cyclosporiasis. Members of ''Cyclospora'' are characterized as having oocysts with two sporocysts, each containing two sporozoites. Species Several ''Cyclospora'' species have been described in various mammals including: *'' Cyclospora angimurinensis'' (from the Hispid pocket mouse) *'' Cyclospora ashtabulensis'' (from the Hairy-tailed mole) *'' Cyclospora caryolytica'' (from various insect-eating mammals) *''Cyclospora cayetanensis'' (from humans) *'' Cyclospora cercopitheci'' (from African green monkeys) *'' Cyclospora colobi'' (from the Colobus monkey) *'' Cyclospora megacephali'' (from the Eastern mole) *'' Cyclospora papionis'' (from the Olive baboon) *'' Cyclospora parascalopi'' (from the Hairy-tailed mole) *'' Cyclospora talpae'' (from the European mole) A smaller number of species have been described from reptiles, arthropods, and snakes: *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choleoeimeria
''Choleoeimeria'' is a genus of alveolate parasites that infect the biliary tracts of reptiles. Morphologically they are similar to the ''Eimeria'', to whom they are closely related. The genus was described in 1989 by Paperna and Landsberg. General features The endogenous development of the parasite occurs in the cells of the bile epithelium. The infected host cell becomes hypertrophic and emerges above the epithelial surface. This hypertrophy coincides with a drastic depletion of the microvilli. The junction zone along with the underlying cell extends into numerous long and fine membranal out-folds. Meront: These undergo binary fission. Microgamont: The differentiating microgamont develops an expanded multilobed body. Macrogamont: The organelles include type 1 and type 2 wall forming bodies, canaliculi and granular bodies. Oocyte: The oocyst wall forms from 4 wall-membranes consolidating over the zygote plasmalemma. The oocysts possess four sporocysts each containing two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calyptospora
''Calyptospora'' is a genus of parasitic protozoa in the phylum Apicomplexa. This genus and family was created in 1984 for the species ''Eimeria funduli'' because of morphological differences in the sporocyst suggested that it was not a typical member of the genus ''Eimeria''.Overstreet RM, Hawkins WE, Fournie JW (1984) The Coccidian Genus ''Calyptospora'' n. g. and Family ''Calyptosporidae'' n. fam. (Apicomplexa), with members infecting primarily fishes. J Euk Micro 31 (2) 332–339 The type species is ''Calyptospora funduli''. Life cycle These parasites infect the livers of their fish hosts which they appear to reach via the gastrointestinal tract. They have an obligatory intermediate host - usually a shrimp - in which they infect the enterocytes of the shrimp gut. The life cycle appears to be as follows: infected fish excrete the parasites from their gastrointestinal tract into which they are secreted with the bile. An intermediate host such as a shrimp ingests the parasi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptosporidiidae
''Cryptosporidium'', sometimes informally called crypto, is a genus of apicomplexan parasitic alveolates that can cause a respiratory and gastrointestinal illness (cryptosporidiosis) that primarily involves watery diarrhea (intestinal cryptosporidiosis), sometimes with a persistent cough (respiratory cryptosporidiosis). Treatment of gastrointestinal infection in humans involves fluid rehydration, electrolyte replacement, and management of any pain. , nitazoxanide is the only drug approved for the treatment of cryptosporidiosis in immunocompetent hosts. Supplemental zinc may improve symptoms, particularly in recurrent or persistent infections or in others at risk for zinc deficiency. ''Cryptosporidium'' oocysts are 4–6 μm in diameter and exhibit partial acid-fast staining. They must be differentiated from other partially acid-fast organisms including '' Cyclospora cayetanensis''. General characteristics ''Cryptosporidium'' causes cryptosporidiosis, an infection tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isospora
''Isospora'' is a genus of internal parasites in the subclass Coccidia. It is responsible for the condition isosporiasis, which causes acute, non-bloody diarrhoea in immunocompromised individuals. Taxonomy At least 248 species were originally described in this genus. For instance, the house sparrow The house sparrow (''Passer domesticus'') is a bird of the Old World sparrow, sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of and a mass of . Females and young birds are coloured pale ... has 12 species of ''Isospora''. However, most species are little studied, and some authors doubt whether all should be recognized as distinct species. In 2005, all former ''Isospora'' species that infect mammalian hosts were reclassified as members of the genus '' Cystoisospora'', a member of the Sarcocystidae family. References External links * Apicomplexa genera Conoidasida {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
