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Monocystidae
The Monocystidae are a family of parasitic alveolates in the phylum Apicomplexa. Taxonomy There are five subfamilies in this family: ''Monocystinae'', ''Oligochaetocystinae'', ''Rhynchocystinae'', ''Stomatophorinae'' and ''Zygocystinae''. History This family was created by Bütschli in 1882.Bütschli O, Schwager C (1882) Protozoa. Abt. 1, Sarkodina und Sporozoa. Leipzig: F. C. Wintersche Verlagshandlung Description The hosts of the species in this family are usually oligochaetes. The species in this family generally infect the coelom of their hosts. The gamonts are spherical to cylindrical. The anterior end is little differentiated if at all. 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 i ...s are biconical or boat-shaped. References Apicomplexa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monocystinae
The Monocystinae are a subfamily of parasitic alveolates in the phylum Apicomplexa. Taxonomy There are seven genera in this subfamily. The type genus is ''Monocystis''. History This subfamily was created by Bütschli in 1882Bütschli O, Schwager C (1882) Protozoa. Abt. 1, Sarkodina und Sporozoa. Leipzig: F. C. Wintersche Verlagshandlung and modified by Bhatia in 1930.Bhatia BL (1930) Synopsis of the genera and classification of haplocyte gregarines. Parasitol 22: 156-167 Description The species in this subfamily are cylindroid in shape with a mucron at the anterior end. The trophozoites are solitary. Syzygy occurs late in the life cycle. They parasitise the coelom of earthworm An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan; they are externally segmented with corresponding internal segmentation; and they usually have setae on all segments. T ...s and are spread by the orofaecal route. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchocystinae
The Rhynchocystinae are a subfamily of parasites in the phylum Apicomplexa. Taxonomy There are three genera in this subfamily: ''Dirhynchocystis'', ''Grayallia'' and ''Rhynchocystis''. History This subfamily was created by Bhatia and Stena in 1939.Bhatia BL and Setna SB (1939) On some gregarine parasites from certain gregarine, ''Stenophora shyamaprasadi'', n. sp. from the intestine of a chilopod. Proc Indian Acad Sci B8 (3) 231-242 Description References Bikont subfamilies Conoidasida {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygocystinae
The Zygocystinae are a subfamily of parasites in the phylum Apicomplexa. Taxonomy There are three genera in this subfamily: ''Adelphocystis'', ''Pleurocystis'' and ''Zygocystis''. History This family was created by Bhatia in 1930. Description Species in this subfamily infect worms of the family Lumbricidae The Lumbricidae are a family of earthworms. About 33 lumbricid species have become naturalized around the world, but the bulk of the species are in the Holarctic region: from Canada (e.g. ''Bimastos lawrenceae'' on Vancouver Island) and the Uni .... In these genera syzygy occurs extremely early in the life cycle. The oocyst is navicular or biconical and has unusual thickenings at both ends. References Conoidasida Bikont subfamilies {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomatophorinae
The Stomatophorinae are a subfamily of parasites in the phylum Apicomplexa. Taxonomy There are ten genera in this subfamily: ''Albertisella'', ''Arborocystis'', ''Astrocystella'', ''Beccaricystis'', ''Chakravartiella'', ''Choanocystoides'', ''Craterocystis'', ''Parachoanocystoides'', ''Stomatophora'' and ''Zeylanocystis''. History This subfamily was created by Bhatia in 1930.Bhatia BL (1930) Synopsis of the genera and classification of haplocyte gregarines. Parasitol 22: 156-167 Description References Bikont subfamilies Conoidasida {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aseptatorina
''Aseptatorina'' is a suborder of parasitic alveolates of the phylum Apicomplexia Taxonomy There are eleven families recognised in this suborder. There are ~400 species in these families. Five families — ''Allantocystidae'', ''Diplocystidae'', ''Enterocystidae'', ''Ganymedidae'' and ''Schaudinnellidae'' — have only one genus. ''Aikinetocystidae'' has two genera. Two families in this suborder — ''Ganymedidae'' and ''Thiriotiidae'' — infect crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can ...s. The taxonomy of this suborder may be in need of revision as it has been shown based on SSU 18S rDNA sequences that four families — ''Ganymedidae'' from the Aseptatorina and ''Cephalolobidae'', ''Porosporidae'' and ''Uradiophoridae'' from the Septatorina appear to form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coelom
The coelom (or celom) is the main body cavity in most animals and is positioned inside the body to surround and contain the digestive tract and other organs. In some animals, it is lined with mesothelium. In other animals, such as molluscs, it remains undifferentiated. In the past, and for practical purposes, coelom characteristics have been used to classify bilaterian animal phyla into informal groups. Etymology The term ''coelom'' derives from the Ancient Greek word (), meaning 'cavity'. Structure Development The coelom is the mesodermally lined cavity between the gut and the outer body wall. During the development of the embryo, coelom formation begins in the gastrulation stage. The developing digestive tube of an embryo forms as a blind pouch called the archenteron. In Protostomes, the coelom forms by a process known as schizocoely. The archenteron initially forms, and the mesoderm splits into two layers: the first attaches to the body wall or ectoderm, forming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligochaete
Oligochaeta () is a subclass of animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms. Specifically, oligochaetes comprise the terrestrial megadrile earthworms (some of which are semiaquatic or fully aquatic), and freshwater or semiterrestrial microdrile forms, including the tubificids, pot worms and ice worms (Enchytraeidae), blackworms (Lumbriculidae) and several interstitial marine worms. With around 10,000 known species, the Oligochaeta make up about half of the phylum Annelida. These worms usually have few setae (chaetae) or "bristles" on their outer body surfaces, and lack parapodia, unlike polychaeta. Diversity Oligochaetes are well-segmented worms and most have a spacious body cavity (coelom) used as a hydroskeleton. They range in length from less than up to in the 'giant' species such as the giant Gippsland earthworm (''Megascolides australis'') and the Mekong worm (''Amynthas meko ... [...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] |
Oligochaetocystinae
Oligochaetocystinae is a subfamily of parasites in the phylum Apicomplexa. Taxonomy There are four genera in this subfamily: * '' Acarogregarina'' * '' Echiurocystis'' * '' Neomonocystis'' * '' Oligochaetocystis'' Description 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 i ...s are cylindrical without thickening at ends. References Bikont subfamilies Conoidasida {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAR Supergroup
The SAR supergroup, also just SAR or Harosa, is a clade that includes stramenopiles (heterokonts), alveolates, and Rhizaria. The name is an acronym derived from the first letters of each of these clades; it has been alternatively spelled "RAS". The term "Harosa" (at the subkingdom level) has also been used. The SAR supergroup is a node-based taxon. Note that as a formal taxon, "Sar" has only its first letter capitalized, while the earlier abbreviation, SAR, retains all uppercase letters. Both names refer to the same group of organisms, unless further taxonomic revisions deem otherwise. Members of the SAR supergroup were once included under the separate supergroups Chromalveolata (Chromista and Alveolata) and Rhizaria, until phylogenetic studies confirmed that stramenopiles and alveolates diverged with Rhizaria. This apparently excluded haptophytes and cryptomonads, leading Okamoto ''et al.'' (2009) to propose the clade Hacrobia to accommodate them. Phylogeny Based on a compi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugregarinorida
The ''Eugregarinorida'' are the most large and diverse order of gregarines — parasitic protists belonging to the phylum Apicomplexa. Eugregarines are found in marine, freshwater and terrestrial habitats. These species possess large trophozoites that are significantly different in morphology and behavior from the sporozoites. This taxon contains most of the known gregarine species. These protozoa are common parasites of many invertebrates including insects and polychete worms. Taxonomy Eugregarinorida has three recognised suborders: Aseptatorina, Blastogregarinorina and Septatorina. The intestinal eugregarines are separated into septate — suborder Septatina — and aseptate — suborder Aseptatina — depending on whether the trophozoite is superficially divided by a transverse septum. The marine gregarines are the most poorly studied members of this order. The eugregarines have been classified into 27 families with ~244 genera, 14 of which have more than 25 species each. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
