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Rhabditis Rainai
''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina'' *''Rhabditis maxima'' *''Rhabditis necromena'' *''Rhabditis sylvatica'' *''Rhabditis terricola ''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina ...'' References External links * Rhabditidae Rhabditida genera {{Rhabditida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenorhabditis Elegans
''Caenorhabditis elegans'' () is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments. It is the type species of its genus. The name is a blend of the Greek ''caeno-'' (recent), ''rhabditis'' (rod-like) and Latin ''elegans'' (elegant). In 1900, Maupas initially named it '' Rhabditides elegans.'' Osche placed it in the subgenus ''Caenorhabditis'' in 1952, and in 1955, Dougherty raised ''Caenorhabditis'' to the status of genus. ''C. elegans'' is an unsegmented pseudocoelomate and lacks respiratory or circulatory systems. Most of these nematodes are hermaphrodites and a few are males. Males have specialised tails for mating that include spicules. In 1963, Sydney Brenner proposed research into ''C. elegans,'' primarily in the area of neuronal development. In 1974, he began research into the molecular and developmental biology of ''C. elegans'', which has since been extensively used as a model organism. It was the first multicellu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secernentea
Secernentea was a class of nematodes in the Classical Phylogeny System (Chitwood, 1958) and is no longer in use. This morphological-based classification system has been replaced by the Modern Phylogeny system, where taxonomy assignment is based on small subunit ribosomal DNA (SSU rDNA). Characteristics of Secernentea are: * Amphid apertures are pore/slit-like * Derids are present in some; located near nerve ring * Phasmids are present; posterior * Excretory system is tubular * Cuticle is striated in two to four layers; lateral field is present * Three esophageal glands; esophageal structure varies * Males generally have one testis * Caudal alae are common * Sensory papillae are cephalic only; may be caudal papillae in males * Mostly terrestrial * Rarely found in fresh or marine water Systematics Subclasses and orders of Secernentea are:Tree of Life Web Project (ToL) (2002)Nematoda. Version of January 1, 2002. Retrieved November 2, 2008. * Subclass Rhabditia (paraphyletic?) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditia
Subclass Rhabditia is mostly composed of parasitic nematodes (particularly in the Strongylida), though there are some free-living species as well (particularly in the Rhabditida). Phasmids (posterior sensory structures) are well-developed, while amphids (anterior sensory structures) are poorly developed or absent in this group. In an alternate classification system, they are treated as suborder Rhabditina, with the orders listed here being ranked as infraorders. Also, the Diplogasterida, which are sometimes considered a monotypic subclass, are probably better placed in the Rhabditia. On the other hand, the old placement of the Ascaridida in Rhabditia instead of Spiruria seems unwarranted. The Rhabditida contain a number of families which are probably better placed in the Tylenchia; alternatively, the latter group may entirely be merged with the Rhabditia.Tree of Life Web Project (ToL) (2002b)Nematoda Version of 2002-JAN-01. Retrieved 2008-NOV-02.ToL (2002) See also * ''Skrjab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditida
Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongyloididae seem to be closer to the Tylenchia, regardless of whether these are merged with the Rhabditia or not.Tree of Life Web Project (2002b)Nematoda Version of 2002-JAN-01. Retrieved 2008-NOV-02. Families Rhabditida * Myolaimina **''Incertae sedis'' *** Myolaimoidea ****Myolaimidae *Rhabditina ** Bunonematomorpha *** Bunonematoidea ****Bunonematidae ** Diplogasteromorpha *** Cylindrocorporoidea ****Cylindrocorporidae *** Diplogasteroidea **** Cephalobiidae ****Diplogasteridae ****Diplogasteroididae ** Rhabditomorpha *** Mesorhabditoidea ****Peloderidae *** Rhabditoidea ****Rhabditidae * Spirurina ** Ascaridomorpha *** Ascaridoidea **** Acanthocheilidae ****Anisakidae ****Ascarididae ****Heterocheilidae **** Raphidascarididae *** Cosmocercoidea ****Atractidae ****Kathlaniidae *** Seuratoidea **** Cuc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditidae
The Rhabditidae are a family of nematodes which includes the model organism '' Caenorhabditis elegans''. Genera ''Bursilla'' *''Bursilla monhysteria'' (Butschli, 1873) ''Caenorhabditis'' *''Caenorhabditis brenneri'' Sudhaus & Kiontke, 2007 *''Caenorhabditis briggsae'' *''Caenorhabditis dolichura'' *'' Caenorhabditis elegans'' Maupas, 1900 *''Caenorhabditis rara'' ''Diploscapter'' Genus ''Diploscapter'' *''Diploscapter bicornis'' *''Diploscapter coronata'' (Cobb, 1893) *''Diploscapter lycostoma'' *''Diploscapter pachys'' ''Halicephalobus'' *''Halicephalobus gingivalis'' (Stefanski, 1954) Andrássy, 1984 *''Halicephalobus mephisto'' Borgonie, García-Moyano, Litthauer, Bert, Bester, van Heerden, Möller, Erasmus & Onstott, 2011 *'' Halicephalobus similigaster'' (Andrássy, 1952) ''Macramphis'' *'' Macramphis stercorarius'' ''Mesorhabditis'' *''Mesorhabditis acris'' *''Mesorhabditis irregularis'' *''Mesorhabditis oschei'' *''Mesorhabditis spiculigera'' ''Neorha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenorhabditis
''Caenorhabditis'' is a genus of nematodes which live in bacteria-rich environments like compost piles, decaying dead animals and rotting fruit. The name comes from Greek: caeno- (καινός (caenos) = new, recent); rhabditis = rod-like (ῥάβδος (rhabdos) = rod, wand). In 1900, Maupas initially named the species ''Rhabditis elegans'', Osche placed it in the subgenus ''Caenorhabditis'' in 1952, and in 1955, Dougherty raised ''Caenorhabditis'' to the status of genus. The genus ''Caenorhabditis'' contains the noted model organism '' Caenorhabditis elegans'' and several other species for which a genome sequence is either available or currently being determined. The two most-studied species in this genus (''C. elegans'' and ''C. briggsae'') are both androdioecious (they have male and hermaphrodite sexes) whereas most other species are gonochoristic (they have male and female sexes). ''C. elegans'' is the type species of the genus. Ecology ''Caenorhabditis'' occupy various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditis Aberrans
''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina'' *''Rhabditis maxima'' *''Rhabditis necromena'' *''Rhabditis sylvatica'' *''Rhabditis terricola ''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina ...'' References External links * Rhabditidae Rhabditida genera {{Rhabditida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditis Marina
''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina'' *''Rhabditis maxima'' *''Rhabditis necromena'' *''Rhabditis sylvatica'' *''Rhabditis terricola ''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina ...'' References External links * Rhabditidae Rhabditida genera {{Rhabditida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditis Maxima
''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina'' *''Rhabditis maxima'' *''Rhabditis necromena'' *''Rhabditis sylvatica'' *''Rhabditis terricola ''Rhabditis'' is a genus of nematodes in the family Rhabditidae. ; Names brought to synonymy: ''Rhabditis (Caenorhabditis)'' Osche, 1952 is a synonym for ''Caenorhabditis'' Dougherty, 1955 Species *''Rhabditis aberrans'' *''Rhabditis marina ...'' References External links * Rhabditidae Rhabditida genera {{Rhabditida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
