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Haemospororida
The Haemosporida (sometimes called Haemospororida) are an order of intraerythrocytic parasitic alveolates. Taxonomy Over 500 species are in this order, organised into four families: the Garniidae, the Haemoproteidae, the Leucocytozoidae, and the Plasmodiidae. The majority of the species lie within three genera: ''Haemoproteus'', ''Leucocytozoon'', and ''Plasmodium''. The Haemoproteidae and the Plasmodiidae both produce pigment. These families have been placed in the suborder Laveraniina. Neither the Haemoproteidae nor the Leucocytozoidae have an asexual cycle in the peripheral blood. The Garniidae do not produce pigment, but do have an asexual cycle in the blood. The taxa in detail are: *Family Garniidae ** Genus '' Fallisia'' Lainson, Landau & Shaw 1974 *** Subgenus '' Fallisia'' *** Subgenus '' Plasmodioides'' Gabaldon, Ulloa and Zerpa 1985 ** Genus '' Garnia'' Lainson, Landau and Shaw 1971 ** Genus '' Progarnia'' Lainson 1995 *Family Haemoproteidae ** Genus '' Johnsprenti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodiidae
The Plasmodiidae are a family (biology), family of apicomplexan parasites, including the type genus ''Plasmodium'', which is responsible for malaria. This family was erected in 1903 by Mesnil and is one of the four families in the Order (biology), order Haemospororida. Diagnostic criteria The diagnostic criteria of the Plasmodiidae are: * Macrogametes and microgamonts develop independently * Meiosis is absent * Microgametocyte produces eight flagellated microgametes * Zygote is motile (known as an ookinete) * Conoid present in ookinete stage only * Sporozoites naked in oocyst (that is without a Apicomplexa lifecycle stages, sporocyst) * Sporozoites have three walls * Heteroxenous: Protozoal merogony, merogony and Apicomplexan life cycle#gametogony, gamogony occur in vertebrate host, and fertilization and sporogony in definitive host (a blood-sucking insect) * Hemozoin pigment is produced Taxonomy The family Plasmodiidae has three sister taxa in the order Haemospororida: the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium
''Plasmodium'' is a genus of unicellular eukaryotes that are obligate parasites of vertebrates and insects. The life cycles of ''Plasmodium'' species involve development in a blood-feeding insect host which then injects parasites into a vertebrate host during a blood meal. Parasites grow within a vertebrate body tissue (often the liver) before entering the bloodstream to infect red blood cells. The ensuing destruction of host red blood cells can result in malaria. During this infection, some parasites are picked up by a blood-feeding insect (mosquitoes in majority cases), continuing the life cycle. ''Plasmodium'' is a member of the phylum Apicomplexa, a large group of parasitic eukaryotes. Within Apicomplexa, ''Plasmodium'' is in the order Haemosporida and family Plasmodiidae. Over 200 species of ''Plasmodium'' have been described, many of which have been subdivided into 14 subgenera based on parasite morphology and host range. Evolutionary relationships among different ''Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleohaemoproteus
''Paleohaemoproteus'' is an extinct genus of ''Haemoproteus'' like organisms. The type species and only known example is that of an isolate found in the abdominal cavity of a female biting midge trapped 100 million years ago in amber found in Myanmar. The amber has been dated to the Early Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ... epoch. References Parasites of Diptera Haemosporida Apicomplexa genera Prehistoric SAR supergroup genera {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haemoproteus
''Haemoproteus'' is a genus of alveolates that are parasitic in birds, reptiles and amphibians. Its name is derived from Greek: ''Haima'', "blood", and ''Proteus'', a sea god who had the power of assuming different shapes. The name ''Haemoproteus'' was first used in the description of '' H. columbae'' in the blood of the pigeon ''Columba livia'' by Kruse in 1890. This was also the first description of this genus. Two other genera — '' Halteridium'' and '' Simondia'' — are now considered to be synonyms of ''Haemoproteus''. The protozoa are intracellular parasites that infect the erythrocytes. They are transmitted by blood sucking insects including mosquitoes, biting midges (''Culicoides''), louse flies (''Hippoboscidae'') and horse-flies (" tabanids", "tabanid flies"). Infection with this genus is sometimes known as pseudomalaria because of the parasites' similarities with ''Plasmodium'' species. Within the genus there are at least 173 species, 5 varieties and 1 subspecies. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haemoproteidae
The Haemoproteidae are a family of parasitic alveolates in the phylum Apicomplexa.Euzéby J (1988) Comparative Medical Protozoology, Vol. 3: Apicomplexa, 2: Haemosporidioses, Part 1: Plasmodiids, Haemoproteids, Piroplasms (general characters The species in this family produce pigment and do not have an asexual cycle in the blood. Taxonomy The genera in this family are: * Genus '' Johnsprentia'' Landau, Chavatte & Beveridge, 2012 * Genus '' Haemocystidium'' Castellani and Willey, 1904, emend. Telford, 1996 * Genus ''Haemoproteus ''Haemoproteus'' is a genus of alveolates that are parasitic in birds, reptiles and amphibians. Its name is derived from Greek: ''Haima'', "blood", and ''Proteus'', a sea god who had the power of assuming different shapes. The name ''Haemoprot ...'' Kruse, 1890 ** Subgenus ''Parahaemoproteus'' Bennett ''et al.'', 1965 ** Subgenus ''Haemoproteus'' * Genus '' Paleohaemoproteus'' Poinar and Telford, 2005 * Genus '' Sprattiella'' Landau ''et al.'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dionisia
''Dionisia'' is a genus of parasitic alveolates belonging to the phylum Apicomplexia. The type species of this genus is ''Dionisia bunoi''. Taxonomy The genus was described by Landau ''et al.'' in 1980. Description The gametocytes are sexually dimorphic with the macrogametocytes being of the 'falciparum' type and the microgametocyte of the 'malariae' type. The schizonts develop in the lumen of the liver blood vessels inside a greatly hypertrophied host cell. They remain moderate in size and their cytoplasm is not intensely basophilic as is usually in the young stages of other mammalian Haemosporidia. Hosts The only known host of these parasites is the cyclops roundleaf bat (''Hipposideros cyclops The cyclops roundleaf bat or cyclops leaf-nosed bat (''Doryrhina cyclops'') is a species of bat in the family Hipposideridae found in the forests of equatorial Africa. Description Cyclops roundleaf bats are relatively small, with adults rangin ...''). Geographical loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hepatocystis
''Hepatocystis'' is a genus of parasites transmitted by midges of the genus ''Culicoides''. Hosts include Old World primates, bats, hippopotamus and squirrels. This genus is not found in the New World. The genus was erected by Levaditi and Schoen, 1932, as ''Hepatocystes''. Taxonomy The type species is ''Hepatocystis kochi''. There are currently 25 recognised species in this genus. Species list * '' Hepatocystis bainae'' * '' Hepatocystis bouillezi'' * '' Hepatocystis brayi'' * '' Hepatocystis brosseti'' * '' Hepatocystis carpenteri'' * '' Hepatocystis cercopitheci'' * '' Hepatocystis epomophori'' * '' Hepatocystis fieldi'' * '' Hepatocystis foylei'' * '' Hepatocystis garnhami'' * '' Hepatocystis hipposideri'' * '' Hepatocystis hippopotami'' * '' Hepatocystis kochi'' * '' Hepatocystis levinei'' * '' Hepatocystis limnotragi'' * '' Hepatocystis malayensis'' * '' Hepatocystis muuli'' * '' Hepatocystis perronae'' * '' Hepatocystis pteropti'' * '' Hepatocystis ratufae'' * '' Hepa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesnilium
''Mesnilium'' is a genus of parasitic alveolates belonging to the phylum Apicomplexia. Its vertebrate hosts are fish. The vectors are not presently known but are thought likely to be leeches. Taxonomy The genus was created in 1972 by Misra, Haldar and Chakravarty.Misra K.K., Haldar D.P. and Chakravarty M.M. (1972) Observations on Mesnilium malariae gen.nov., spec.nov. (Haemosporidia, Sporozoa) from the fresh water teleost, ''Ophicephalus punctatus'' Bloch. Arch. Protistenkd 114, 444-452 Description Merogony occurs in erythrocytes and reticulo-endothelial cells. Gamogony occurs only in erythrocytes and pigment granules are present only in microgamonts and macrogamete {{Short pages monitor [Baidu] |
Nycteria
''Nycteria'' is a genus of protozoan parasites that belong to the phylum Apicomplexa. It is composed of vector-borne haemosporidian parasites that infect a wide range of mammals such as primates, rodents and bats. Its vertebrate hosts are bats. First described by Garnham and Heisch in 1953, ''Nycteria'' is mostly found in bat species where it feeds off the blood of their hosts and causes disease. Within the host, ''Nycteria'' develops into peculiar lobulated schizonts in parenchyma cells of the liver, similarly to the stages of ''Plasmodium falciparum'' in the liver. The vector of Nycteria has been hard to acquire and identify. Because of this, the life cycle of ''Nycteria'' still remains unknown and understudied. It has been suggested that this vector could be an arthropod rather than a mosquito or the vector of most haemosporidian parasites. Etymology The word ''Nycteris'' is derived from the Greek word “nykteros”, also “bat”. ''Nycteris'' is a bat genus in the family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ettore Marchiafava
Ettore Marchiafava (3 January 1847 – 22 October 1935) was an Italian physician, pathologist and neurologist. He spent most of his career as professor of medicine at the University of Rome (now Sapienza Università di Roma). His works on malaria laid down the foundation for modern malariology. He and Angelo Celli were the first to elucidate living malarial parasites in human blood, and able to distinguish the protozoan parasites responsible for tertian and benign malaria. In 1885 they gave the formal scientific name ''Plasmodium'' for these parasites. They also discovered meningococcus as the causative agent of cerebral and spinal meningitis. Marchiafava was the first to describe syphilitic cerebral arteritis and degeneration of brain in an alcoholic patient, which is now eponymously named Marchiafava's disease. He gave a complete description of a genetic disease of blood now known Paroxysmal nocturnal hemoglobinuria or sometimes Strübing-Marchiafava-Micheli syndrome, in h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biguetiella
The type species of this genus is ''Biguetiella minuta''. Taxonomy The genus was described by Landau ''et al.'' in 1984.Landau I., Baccam D., Ratanaworabhan N., Yenbutra S., Boulard Y., Chabaud A.G. (1984) New Haemoproteidae parasites of ''Chiroptera'' in Thailand. Ann. Parasitol. Hum. Comp. 59(5):437-447 Description ''Biguetiella'' has small intra-hepatocytic schizonts (< 15 micrometres). Hosts The only known host of these parasites is the intermediate roundleaf bat (''Hipposideros larvatus
The intermediate roundleaf bat (''Hipposideros larvatus'') is a species of bat in the family Hipposideridae. It is found in Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, and Vietnam
Vietnam or Viet N ... '').
Distribution ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angelo Celli
Angelo Celli (25 March 1857 – 2 November 1914) was an Italian physician, hygienist, parasitologist and philanthropist known for his pioneering work on the malarial parasite and control of malaria. He was Professor of Hygiene at the University of Palermo, and then at the Sapienza University of Rome. He founded the Pasteur Institute of Italy. With his wife Anna Fraentzel he established a number of medical schools in the Roman Campagna and dispensaries in Rome. He and Ettore Marchiafava correctly described the protozoan parasite that caused malaria and gave it the scientific name ''Plasmodium'' in 1885. Understanding the nature of malaria, he was among the first scientists to advocate and work for eradication of insects to prevent infectious diseases. He was elected to the Senate of the Kingdom of Italy in 1892. Biography Angelo Celli graduated in medicine in 1878 at the Sapienza University of Rome. He joined the pathology department as assistant to Tommasi-Crudeli. In 1886, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
