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Oscheius Tipulae
''Oscheius tipulae'' is a species of nematodes, described in association of the leatherjacket, the larva of ''Tipula paludosa''. ''O. tipulae'' is a satellite developmental genetic model organism used to study vulva formation.Polymorphism and evolution of vulval precursor cell lineages within two nematode genera, Caenorhabditis and Oscheius. M Delattre, MA Félix - Current Biology, 2001 It is an androdioecious Androdioecy is a reproductive system characterized by the coexistence of males and hermaphrodites. Androdioecy is rare in comparison with the other major reproductive systems: dioecy, gynodioecy and hermaphroditism. In animals, androdioecy has bee ... species characterized by the coexistence of males and hermaphrodites. References External links Rhabditidae Nematodes described in 1971 Animal models {{Rhabditida-stub ... [...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] |
Oscheius
''Oscheius'' is a genus of nematode. '' O. tipulae'' is a satellite developmental genetic model organism used to study vulva formation. In phylogenetic studies, based on the analysis of sequences of three nuclear genes, ''Oscheius'' groups with ''Caenorhabditis'' species and the ''Diploscapter'', ''Protorhabditis'' and ''Prodontorhabditis ''Prodontorhabditis'' is a genus of nematodes belonging to the family Rhabditidae. The species of this genus are found in Europe and Central America. Species: *''Prodontorhabditis anthobia ''Prodontorhabditis'' is a genus of nematodes belongi ...'' 'Protorhabditis' group, all included in the 'Eurhabditis' group of Rhabditidae genera.The phylogenetic relationships of Caenorhabditis and other rhabditids. Karin Kiontke and David H. A. Fitch, Wormbook, 2005, References External links Rhabditidae Rhabditida genera Model organisms {{Rhabditida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tipula Paludosa
''Tipula paludosa'' is a species of true craneflies, family Tipulidae. It is also known as the European crane fly or the marsh crane fly. It is a pest in grasslands of Northwest Europe and has been accidentally introduced to North America. Distribution ''Tipula paludosa'' is widespread throughout the West Palaearctic and Nearctic. For identification see the ''Keys to the Insects of the European Part of the USSR'' and the ''Diptères: Tipulidae''. ''Tipula paludosa'' is a very common species flying in May and July to October peaking in August and September. Biological interactions ''Tipula paludosa'' larvae live in the upper soil layers and are the major insect pest in grasslands of Northwest Europe. ''Oscheius tipulae'' is a species of nematodes, described in association of the leatherjacket, the larva of ''T. paludosa''. Tipula paludosa, Trawscoed, North Wales, Aug 2015 (23388703162).jpg , ''Tipula paludosa'' male References {{Taxonbar, from=Q20976 Tipulidae Diptera ... [...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] |
Androdioecy
Androdioecy is a reproductive system characterized by the coexistence of males and hermaphrodites. Androdioecy is rare in comparison with the other major reproductive systems: dioecy, gynodioecy and hermaphroditism. In animals, androdioecy has been considered a stepping stone in the transition from dioecy to hermaphroditism, and vice versa. Androdioecy is sometimes referred to as a mixed breeding system with trioecy and gynodioecy. It is a dimorphic sexual system in plants alongside gynodioecy and dioecy. Evolution of androdioecy The fitness requirements for androdioecy to arise and sustain itself are theoretically so improbable that it was long considered that such systems do not exist. Particularly, males and hermaphrodites have to have the same fitness, in other words the same number of offspring, in order to be maintained. However, males only have offspring by fertilizing eggs or ovules of hermaphrodites, while hermaphrodites have offspring both through fertilizing eggs or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematodes Described In 1971
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] |
