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Geleia Obliqua
''Geleia'' is a genus of karyorelict ciliates in the family Geleiidae. The genus name is a taxonomic patronym honoring the Hungarian protistologist József von Gelei (1885-1952). Systematics 17 species are currently described in the genus ''Geleia''. * '' Geleia acuta'' Dragesco, 1960 * ''Geleia decolor'' Kahl, 1933 * '' Geleia filiformes'' Nouzarède, 1976 * '' Geleia fossata'' Kahl, 1933 is the type species of the genus. * '' Geleia heterotricha'' Dragesco, 1960, redescribed as '' Gellertia heterotricha'' Dragesco, 1999 * '' Geleia hyalina'' Dragesco, 1960 * '' Geleia luci'' Dragesco, 1960 * '' Geleia major'' Dragesco, 1954 * '' Geleia martinicense'' Nouzarède, 1976 * '' Geleia murmanica'' Raikov, 1962 * '' Geleia nigriceps'' Kahl, 1933 * '' Geleia obliqua'' Dragesco, 1960 * '' Geleia orbis'' Fauré-Fremiet, 1951 * '' Geleia simplex'' Fauré-Fremiet, 1951 * '' Geleia swedmarki'' Dragesco * '' Geleia tenuis'' Dragesco, 1954 * '' Geleia vacuolata'' Dragesco, 1960 Phyloge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karyorelictea
Karyorelictea is a class (biology), class of ciliates in the subphylum Postciliodesmatophora. Most species are members of the microbenthos community, that is, microscopic organisms found in the marine interstitial habitat, though one genus, ''Loxodes'', is found in freshwater. The majority of karyorelict taxa have not been cultivated in the laboratory, although clonal lines of ''Loxodes'' have been developed. Systematics According to Lynn (2008), the Karyorelictea class is divided into three orders: * Loxodida, containing the families Cryptopharyngidae and Loxodidae; * Protoheterotrichida, containing the families Aveliidae and Geleiidae; * Protostomatida, containing the families Kentrophoridae and Trachelocercidae. These three order (biology), orders were defined morphology (biology), morphologically, and have been confirmed with molecular phylogenetics. An additional family, Wilbertomorphidae, is of uncertain affiliation and has not been assigned to an order. Nuclear dimorphi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geleia Nigriceps
''Geleia'' is a genus of karyorelict ciliates in the family Geleiidae. The genus name is a taxonomic patronym honoring the Hungarian protistologist József von Gelei (1885-1952). Systematics 17 species are currently described in the genus ''Geleia''. * '' Geleia acuta'' Dragesco, 1960 * ''Geleia decolor'' Kahl, 1933 * '' Geleia filiformes'' Nouzarède, 1976 * '' Geleia fossata'' Kahl, 1933 is the type species of the genus. * '' Geleia heterotricha'' Dragesco, 1960, redescribed as '' Gellertia heterotricha'' Dragesco, 1999 * '' Geleia hyalina'' Dragesco, 1960 * '' Geleia luci'' Dragesco, 1960 * '' Geleia major'' Dragesco, 1954 * '' Geleia martinicense'' Nouzarède, 1976 * '' Geleia murmanica'' Raikov, 1962 * '' Geleia nigriceps'' Kahl, 1933 * ''Geleia obliqua'' Dragesco, 1960 * '' Geleia orbis'' Fauré-Fremiet, 1951 * '' Geleia simplex'' Fauré-Fremiet, 1951 * '' Geleia swedmarki'' Dragesco * '' Geleia tenuis'' Dragesco, 1954 * '' Geleia vacuolata'' Dragesco, 1960 Phylogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corlissina
''Corlissina'' is a genus of karyorelict ciliates in the family Geleiidae. Only the type species ''Corlissina maricaensis'' is assigned to this genus. ''Corlissina'' is characterized by a paroral ciliature with two rows of polykineties forming a loop at the posterior end. The dikinetids of the adoral zone are organized in short polykineties, followed by a row of monokinetids. The two globular macronuclei are linked by a single micronucleus, a pattern found in most Geleiidae. The genus name is a taxonomic patronym honoring the protistologist John O. Corliss. Comparison and phylogenetic analysis of 18S rRNA sequences showed that ''Corlissina maricaensis'' is the sister group to '' Parduczia orbis''. In turn, these two genera form a clade with ''Geleia ''Geleia'' is a genus of karyorelict ciliates in the family Geleiidae. The genus name is a taxonomic patronym honoring the Hungarian protistologist József von Gelei (1885-1952). Systematics 17 species are currently des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parduczia
''Parduczia'' is a genus of karyorelict ciliates in the family Geleiidae. ''Parduczia'' species are filiform to serpentiform ciliates characterized by their giant size (1.2 to 2.5 mm on average) and their very long buccal split. The genus name is a taxonomic patronym honoring the protistologist Béla Párducz (1911–1964). Systematics Five species are currently described in the genus ''Parduczia''. * '' Parduczia arcachonense'' (Nouzarède, 1965) Dragesco, 1999 * '' Parduczia filiformis'' (Nouzarède, 1977) Dragesco, 1999 * '' Parduczia martinicense'' (Nouzarède, 1977) Dragesco, 1999 * '' Parduczia murmanica'' (Raikov, 1962) Dragesco, 1999 * '' Parduczia orbis'' (Fauré-Fremiet, 1950) Dragesco, 1999 is the type species of the genus. Phylogeny Comparison and phylogenetic analysis of 18S rRNA sequences showed that ''Parduczia orbis'' is the sister group to '' Corlissina maricaensis''. In turn, these two genera form a clade with ''Geleia''. Alternative genetic code An a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or Extant taxon, extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming Taxon, taxa that are not clades; that is, taxa that are not Monophyly, monophyletic. Some of the relationships between organisms that the molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18S RRNA
18S ribosomal RNA (abbreviated 18S rRNA) is a part of the ribosomal RNA in eukaryotes. It is a component of the Eukaryotic small ribosomal subunit (40S) and the cytosolic homologue of both the 12S rRNA in mitochondria and the 16S rRNA in plastids and prokaryotes. Similar to the prokaryotic 16S rRNA, the genes of the 18S ribosomal RNA have been widely used for phylogenetic studies and biodiversity screening of eukaryotes. Research history Along with the 28S and 5.8S rRNA in eukaryotes, the 18S rRNA was early identified as integral structural element of ribosomes which were first characterized by their sedimentation properties and named according to measured Svedberg units. Given its ubiquitous presence in eukaryotic life, the evolution of the 18S rRNA was soon proposed as marker for phylogenetic studies to resolve the evolution of eukaryotes. Structure and function The 18S ribosomal RNA is the structural RNA of the small subunit in the eukaryotic cytoplasmic ribosome. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic Analysis
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data and observed heritable traits of DNA sequences, protein amino acid sequences, and morphology. The results are a phylogenetic tree—a diagram depicting the hypothetical relationships among the organisms, reflecting their inferred evolutionary history. The tips of a phylogenetic tree represent the observed entities, which can be living taxa or fossils. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the taxa represented on the tree. An unrooted tree diagram (a network) makes no assumption about directionality of character state transformation, and does not show the origin or "root" of the taxa in question. In addition to their use for inferring phylogenetic patterns a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geleia Vacuolata
''Geleia'' is a genus of karyorelict ciliates in the family Geleiidae. The genus name is a taxonomic patronym honoring the Hungarian protistologist József von Gelei (1885-1952). Systematics 17 species are currently described in the genus ''Geleia''. * '' Geleia acuta'' Dragesco, 1960 * ''Geleia decolor'' Kahl, 1933 * '' Geleia filiformes'' Nouzarède, 1976 * '' Geleia fossata'' Kahl, 1933 is the type species of the genus. * '' Geleia heterotricha'' Dragesco, 1960, redescribed as '' Gellertia heterotricha'' Dragesco, 1999 * '' Geleia hyalina'' Dragesco, 1960 * '' Geleia luci'' Dragesco, 1960 * '' Geleia major'' Dragesco, 1954 * '' Geleia martinicense'' Nouzarède, 1976 * '' Geleia murmanica'' Raikov, 1962 * ''Geleia nigriceps'' Kahl, 1933 * ''Geleia obliqua'' Dragesco, 1960 * '' Geleia orbis'' Fauré-Fremiet, 1951 * '' Geleia simplex'' Fauré-Fremiet, 1951 * '' Geleia swedmarki'' Dragesco * '' Geleia tenuis'' Dragesco, 1954 * '' Geleia vacuolata'' Dragesco, 1960 Phylogeny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
