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Hexamita
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Meleagridis
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Columbae
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Inflata
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way o ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Truttae
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Salmonis
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Pitheci
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Hexamita Muris
''Hexamita'' is a genus of parasitic diplomonads. It is related to ''Giardia''. ''H. columbae'' and ''H. meleagridis'' live in the intestines of birds. ''H. muris'' and ''H. pitheci'' live in the intestines of mammals. ''H. salmonis'' and ''H. truttae'' live in the intestines of fish. The genus also includes the species ''Hexamita inflata ''Hexamita'' is a genus of parasitic Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way o ...''. It is believed that ''Hexamita'' parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes. References External links * http://medical-dictionary.thefreedictionary.com/Hexamita * * http://www.lexic.us/definition-of/Hexamita Metamonads {{parasite-stub ...
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Diplomonad
The diplomonads (Greek for "two units") are a group of flagellates, most of which are parasitic. They include ''Giardia duodenalis'', which causes giardiasis in humans. They are placed among the metamonads, and appear to be particularly close relatives of the retortamonads. Most diplomonads are double cells: they have two nuclei, each with four associated flagella, arranged symmetrically about the body's main axis. Like the retortamonads, they lack both mitochondria and Golgi apparatuses. However, they are now known to possess modified mitochondria, in the case of ''G. duodenalis'', called mitosomes. These are not used in ATP synthesis the way mitochondria are, but are involved in the maturation of iron-sulfur proteins. Possible sexual reproduction in ''Giardia'' The common intestinal parasite ''Giardia duodenalis'' (synonyms ''Giardia lamblia'', ''G. intestinalis'') was once considered to be a descendant of a protist lineage that predated the emergence of meiosis and sex ...
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Retortamonadida
The retortamonads are a small group of flagellates, most commonly found in the intestines of animals as commensals, although a free-living species called the ''Chilomastix cuspidata'' exists. They are grouped under the taxon, Archezoa. They are usually around 5-20 μm in length, and all of their small subunit ribosomal RNA gene sequences are very similar to each other. There are two genera: ''Retortamonas'' with two flagella, and ''Chilomastix'' with four. In both cases there are four basal bodies anterior to a prominent feeding groove, and one flagellum is directed back through the cell, emerging from the groove. The retortamonads lack mitochondria, golgi apparatus, dictyosomes, and peroxisomes. They are close relatives of the diplomonads, and are placed among the metamonad The metamonads are microscopic eukaryotic organisms, a large group of flagellate amitochondriate Loukozoa. Their composition is not entirely settled, but they include the retortamonads, diplomonads, ...
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Retortamonas
''Retortamonas'' is a genus of flagellated excavates.Geiman, Q. M. 1932: Retortamonas caudacus (n. sp.), an Intestinal Flagellate from a Beetle Larva, Gyrinidae sp. Transactions of the American Microscopical Society 51(4), 219-224. Doi: DOI: 10.2307/3222268Kulda J., Nohýnková E., Čepička I. 2017: Retortamonadida (with Notes on Carpediemonas-Like Organisms and Caviomonadidae). In: Archibald J., Simpson A., Slamovits C. (eds) Handbook of the Protists. Springer, Cham: 1247-1278. doi: https://doi.org/10.1007/978-3-319-28149-0_3 It is one of only two genera belonging to the family Retortamonadidae along with the genus ''Chilomastix''. Martinez-Diaz, R. A., Castro, A. T., Herrera, S. and Ponce, F. 2001: First Report of the Genus Retortamonas (Sarcomastigophora: Retortamonadidae) in Birds. Memórias do Instituto Oswalda Cruz, 96(7), 961-963. doi: https://doi.org/10.1590/S0074-02762001000700013 The genus parasitizes a large range of hosts including humans.Hendarto, J., Mizuno, T., ...
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Diplomonadida
The diplomonads (Greek for "two units") are a group of flagellates, most of which are parasitic. They include ''Giardia duodenalis'', which causes giardiasis in humans. They are placed among the metamonads, and appear to be particularly close relatives of the retortamonads. Most diplomonads are double cells: they have two nuclei, each with four associated flagella, arranged symmetrically about the body's main axis. Like the retortamonads, they lack both mitochondria and Golgi apparatuses. However, they are now known to possess modified mitochondria, in the case of ''G. duodenalis'', called mitosomes. These are not used in ATP synthesis the way mitochondria are, but are involved in the maturation of iron-sulfur proteins. Possible sexual reproduction in ''Giardia'' The common intestinal parasite ''Giardia duodenalis'' (synonyms ''Giardia lamblia'', ''G. intestinalis'') was once considered to be a descendant of a protist lineage that predated the emergence of meiosis and s ...
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Félix Dujardin
Félix Dujardin (5 April 1801 – 8 April 1860) was a French biologist born in Tours. He is remembered for his research on protozoans and other invertebrates. Biography In 1840 he was appointed professor of geology and mineralogy at the University of Toulouse, and during the following year was a professor of zoology and botany at Rennes. In regard to his educational background, Dujardin was largely self-taught, the son of a watchmaker. Dujardin worked with microscopic animal life, and in 1834 proposed that a new group of one-celled organisms be called Rhizopoda. He denied naturalist Christian Gottfried Ehrenberg's theory that microscopic organisms were "complete organisms" similar to higher animals, specifically noting that they had specialized structures unique to single-celled organisms, which meant that foraminifera he was studying was not, as his contemporaries believed it to be, a mollusk. In addition to his studies of microscopic life, he did extensive research on inve ...
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