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Hyaloklossia
''Hyaloklossia'' is a genus of parasitic alveolates in the phylum Apicomplexa. Only one species in this genus is currently recognised - ''Hyaloklossia lieberkuehni''. History This parasites of this genus was first observed by Lieberkuhn in 1854 within the renal cortex of a frog of the genus ''Rana''. Labbe in 1894 initially named this species ''Klossia lieberkuehni''. Labbe in 1896 moved this species to a new genus ''Hyaloklossia''. Laveran and Mesnil in 1902 and Minchin in 1903 moved this species into the genus ''Diplospora'' Labbe 1893. It was moved again into the genus ''Isospora'' by Noller in 1923. The species was replaced in the genus ''Hyaloklossia'' by Modry ''et al.'' in 2001. Description There are two sporocysts within the ocysts. The oocysts have a thin, elastic, relatively fragile wall. The sporocysts are tetrazoic. The sporocyst wall is composed of plates joined by sutures and Stieda and substieda bodies are absent. The life cycle is homoxenous. Endogenou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaloklossia Lieberkuehni
''Hyaloklossia'' is a genus of parasitic alveolates in the phylum Apicomplexa. Only one species in this genus is currently recognised - ''Hyaloklossia lieberkuehni''. History This parasites of this genus was first observed by Lieberkuhn in 1854 within the renal cortex of a frog of the genus ''Rana''. Labbe in 1894 initially named this species ''Klossia lieberkuehni''. Labbe in 1896 moved this species to a new genus ''Hyaloklossia''. Laveran and Mesnil in 1902 and Minchin in 1903 moved this species into the genus '' Diplospora'' Labbe 1893. It was moved again into the genus '' Isospora'' by Noller in 1923. The species was replaced in the genus ''Hyaloklossia'' by Modry ''et al.'' in 2001. Description There are two sporocysts within the ocysts. The oocysts have a thin, elastic, relatively fragile wall. The sporocysts are tetrazoic. The sporocyst wall is composed of plates joined by sutures and Stieda and substieda bodies are absent. The life cycle is homoxenous. Endoge ... [...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] |
Sarcocystidae
The Sarcocystidae are a family of Apicomplexa associated with a variety of diseases in humans and other animals. Taxonomy Genera in this family include: * '' Besnoitia'' * ''Cystoisospora'' * ''Frenkelia'' * ''Nephroisospora'' * '' Neospora'' * ''Sarcocystis'' * ''Toxoplasma ''Toxoplasma gondii'' () is an obligate intracellular parasitic protozoan (specifically an apicomplexan) that causes toxoplasmosis. Found worldwide, ''T. gondii'' is capable of infecting virtually all warm-blooded animals, but felids, such as d ...'' Evolution The genera ''Neospora'' and ''Toxoplasma'' appear to have diverged about . References External links Overview at webends.com* Genes Apicomplexa families {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryota
Eukaryotes () are organisms whose Cell (biology), cells have a cell nucleus, 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-domain system, 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), Asgard archaea. This implies that there are only Two-domain system, 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 (ecology), 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. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rana (genus)
''Rana'' is a genus of frogs commonly known as the Holarctic true frogs, pond frogs or brown frogs. Members of this genus are found through much of Eurasia and western North America. Many other genera were formerly included here. These true frogs are usually largish species characterized by their slim waists and wrinkled skin; many have thin ridges running along their backs, but they generally lack "warts" as in typical toads. They are excellent jumpers due to their long, slender legs. The typical webbing found on their hind feet allows for easy movement through water. Coloration is mostly greens and browns above, with darker and yellowish spots. Distribution and habitat Many frogs in this genus breed in early spring, although subtropical and tropical species may breed throughout the year. Males of most of the species are known to call, but a few species are thought to be voiceless. Females lay eggs in rafts or large, globular clusters, and can produce up to 20,000 at one time. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rana Esculenta
The edible frog (''Pelophylax'' kl. ''esculentus'') is a species of common European frog, also known as the common water frog or green frog (however, this latter term is also used for the North American species ''Rana clamitans''). It is used for food, particularly in France for the delicacy frog legs. Females are between 5 and 9 cm long, males between 6 and 11 cm. This widespread and common frog has many common names, including European dark-spotted frog, European black-spotted pond frog, and European black-spotted frog. Distribution ''Pelophylax esculentus'' is endemic to Europe. It naturally occurs from the northern half of France to western Russia, and from Estonia and Denmark to Bulgaria and northern Italy. The edible frog is introduced in Spain, Norway and the United Kingdom. The natural range is nearly identical to that of '' P. lessonae''. Hybridogenesis ''Pelophylax'' kl. ''esculentus'' is the fertile hybrid of the pool frog (''Pelophylax lessonae'') an ... [...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 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 ...s. 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] |
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 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 The Sarcocystidae are a family of Apicomplexa associated with a variety of diseases in humans and other animals. Taxonomy Genera in this family include: * ''Besnoitia'' * '' Cystoisospora'' * '' Frenkelia'' * '' Nephroisospora'' * ''Neospora'' ... family. References External links * Apicomplexa genera Conoidasida {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplospora
''Diplospora'' is a genus of flowering plants in the family Rubiaceae. The genus is found in tropical and subtropical Asia. Species *'' Diplospora bilocularis'' ( Kurz) M.Gangop. & Chakrab. - Burma *'' Diplospora cuspidata'' Valeton - Sarawak *'' Diplospora dubia'' (Lindl.) Masam. - China, Vietnam, Taiwan, Ryukyu Islands *'' Diplospora erythrospora'' (Thwaites) Bedd. - Sri Lanka *'' Diplospora fasciculiflora'' (Elmer) Elmer - Philippines *'' Diplospora fruticosa'' Hemsl. - China, Vietnam *'' Diplospora griffithii'' Hook.f. - Burma *'' Diplospora kunstleri'' King & Gamble - Malaysia *'' Diplospora lasiantha'' Ridl. - Malaysia *'' Diplospora majumdarii'' M.Gangop. & Chakrab. - Perak *'' Diplospora minahassae'' Koord. - northern Sulawesi *'' Diplospora mollissima'' Hutch. - Yunnan *'' Diplospora negrosensis'' (Elmer) Arriola & Alejandro *'' Diplospora puberula'' (Merr.) S.J.Ali & Robbr. - Philippines *'' Diplospora pubescens'' Hook.f. - Burma *'' Diplospora schmidthii'' (K.Schum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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