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Sivatoshella
''Sivatoshella'' is a genus of parasitic alveolates in the phylum Apicomplexa. History This species and genus was described in 1968 by Ray and Sarak.Ray, Sarak (1968) A new coccidium ''Sivatoshella lonchurae'' ''n. gen''., ''n. sp''., from ''Lonchura malabarica'' and ''L. punctulata''. J Euk Microbiol 15(4) 640–643 Taxonomy There is currently only one species recognised in this genus - ''Sivatoshella lonchurae''. Life cycle Little is known about this species and genus. Transmission is presumably by the orofaecal route. This species is found in the duodenum and small intestine of both the Indian silverbill ('' Lonchura malabarica'') and the scaly breasted munia (''Lonchura punctulata''). The sporulation time has been estimated to be 24–48 hours at 31 degrees Celsius. To date it has only been described in Calcutta, West Bengal in India. Description The oocysts are spherical with diameter of 36–38 µm (mean 37.5). The wall is thick and 4 layered. The outermost la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lonchura Malabarica
The Indian silverbill or white-throated munia (''Euodice malabarica'') is a small passerine bird found in the Indian Subcontinent and adjoining regions that was formerly considered to include the closely related African silverbill (''Euodice cantans''). This estrildid finch is a common resident breeding bird in the drier regions of the Middle East and the Indian Subcontinent. It has also been introduced into many other parts of the world and has become established in some areas. They forage in small flocks in grassland and scrub habitats. Taxonomy The Indian silverbill was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae''. He placed the species with the crossbills in the genus ''Loxia'' and coined the binomial name ''Loxia malabarica''. The specific epithet is from the Malbar region on the west coast of India. Linnaeus specified the locality as India but this was restricted to the Malabar region by E. C. Stuart Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucoccidiorida
The Eucoccidiorida are an order of microscopic, spore-forming, single-celled parasites belonging to the apicomplexan class Conoidasida. Protozoans of this order include parasites of humans, and both domesticated and wild animals including birds. Among these parasites are the ''Toxoplasma gondii'' that cause toxoplasmosis and ''Isospora belli'', which results in isosporiasis. Definition This is the largest order in the class Conoidasida and contains those species that all undergo merogony (asexual), gametogony (sexual) and sporogony (spore formation) during their lifecycles. Genera Nineteen families, three subfamilies, and 70 genera are recognised in this order. The genera include: '' Adelea'', ''Adelina'', ''Aggregata'', '' Alveocystis'', '' Atoxoplasma'', '' Babesiosoma'', ''Barrouxia'', '' Bartazoon'', '' Besnoitia'', '' Calyptospora'', '' Caryospora'', '' Caryotropha'', '' Chagasella'', '' Choleoeimeria'', ''Cryptosporidium'', '' Crystallospora'', '' Cyclospora'', '' Cyrilia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ''Barrouxia'' is a genus of parasitic alveolates belonging to the phylum Apicomplexa. This genus was created by Schneider in 1885.Levine ND (1983) The genera ''Barrouxia'', ''Defretinella'', and ''Goussia'' of the coccidian family Barrouxiidae ( ...''. The taxonomic status of '' Atoxoplasma'' remains unclear. References Conoidasida SAR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eimeriidae
Eimeriidae is a family of Apicomplexa. It contains the following genera: *'' Acroeimeria'' Paperna & Landsberg, 1989 *'' Alveocystis'' Bel'tenev, 1980 *'' Caryospora'' Léger, 1904 *''Cyclospora'' Schneider, 1881 *''Diaspora'' Léger, 1898 *''Dorisa'' Levine, 1979 *''Eimeria'' Schneider, 1875 *''Epieimeria'' Dyková & Lom, 1981 *''Gousseffia'' Levine & Ivens, 1979 *'' Hoarella'' Arcay de Peraza, 1963 *''Isospora'' Schneider, 1881 *'' Mantonella'' Vincent, 1936 *'' Octosporella'' Ray & Ragavachari, 1942 *'' Pfeifferinella'' von Wasielewski, 1904 *'' Polysporella'' McQuistion, 1990 *'' Pythonella'' Ray & Das Gupta, 1937 *'' Sivatoshella'' Ray & Sarkar, 1968 Taxonomy The family ''Goussia'' forms a trichotomy with the ''Eimeriidae'' and ''Sarcocystidae''. The biliary Eimeria-like coccidia of reptiles are classified into the genus ''Choleoeimeria ''Choleoeimeria'' is a genus of alveolate parasites that infect the biliary tracts of reptiles. Morphologically they are similar to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryota
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard archaea. This implies that there are only two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as Flagellated cell, flagellated phagotrophs. Their name comes from the Greek language, Greek wikt:εὖ, εὖ (''eu'', "well" or "good") and wikt:� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 typified by a ''cellular variety'' with a distinct morphology and biochemistry. Not all apicomplexa develop all the following cellular varieties and division methods. This presentation is intended as an outline of a hypothetical generalised apicomplexan organism. Methods of asexual replication Apicomplexans (sporozoans) replicate via ways of multiple fission (also known as schizogony). These ways include , and , although the latter is sometimes referred to as schizogony, despite its general meaning. Merogony is an asexually reproductive process of apicomplexa. After infecting a host cell, a trophozoite ( see glossary below) increases in size while repeatedly replicating its nucleus and other organelles. During this process, the orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stieda Body
The Stieda body is an organelle located at the polar region of the sporocyst of some coccidia visible with electron microscopy. It appears as a knob like structure and is a plug occluding a hole in the sporocyst. The breakdown of this body allows excystation of the sporozoites. References Apicomplexa {{Microbiology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apicomplexa Lifecycle Stages
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 typified by a ''cellular variety'' with a distinct morphology and biochemistry. Not all apicomplexa develop all the following cellular varieties and division methods. This presentation is intended as an outline of a hypothetical generalised apicomplexan organism. Methods of asexual replication Apicomplexans (sporozoans) replicate via ways of multiple fission (also known as schizogony). These ways include , and , although the latter is sometimes referred to as schizogony, despite its general meaning. Merogony is an asexually reproductive process of apicomplexa. After infecting a host cell, a trophozoite ( see glossary below) increases in size while repeatedly replicating its nucleus and other organelles. During this process, the orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropyle (zoology)
A micropyle is a pore in the membrane covering the ovum The egg cell, or ovum (plural ova), is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is ..., through which a sperm enters. Micropyles are also found in sporozoites of some digenetic microorganisms such as '' Plasmodium'' at the anterior part of the cell that ultimately leads towards the apical cap. Examples of other organisms that have micropyles are the '' Bombyx mandarina'' and the '' Ceratitis capitata''. References Reproduction {{animal-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Residuum (protozoa)
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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 typified by a ''cellular variety'' with a distinct morphology and biochemistry. Not all apicomplexa develop all the following cellular varieties and division methods. This presentation is intended as an outline of a hypothetical generalised apicomplexan organism. Methods of asexual replication Apicomplexans (sporozoans) replicate via ways of multiple fission (also known as schizogony). These ways include , and , although the latter is sometimes referred to as schizogony, despite its general meaning. Merogony is an asexually reproductive process of apicomplexa. After infecting a host cell, a trophozoite ( see glossary below) increases in size while repeatedly replicating its nucleus and other organelles. During this process, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
