Secernentea Genera

	Secernentea Genera 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 This morphological-based classification system has been replaced by the Modern Phylogeny system, where taxonomy assignment is based on small subunit ribosomal DNA (SSU rDNA). Description Amphid apertures of Secernenteas are pore or slit-like. Some Secernenteas have deirids which are located near nerve ring. Secernenteas have posterior phasmids. The excretory system of a Secernentea is tubular. Cuticles of Secernenteas are striated in two to four layers. Lateral field is present. Secernenteas have three esophageal glands. Their esophageal structure varies. Male Secernenteas generally have one testis. Caudal alae are common in Secernenteas. Sensory papillae of Secernenteas are cephalic only. It might be caudal papillae in male Secernenteas. Secernenteas are mostly found in land but they are rarely found in marine water or freshwater. Taxonomy Subclass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Diplogasteria Diplogasterida was an order of nematodes. It was sometimes placed in a monotypic subclass Diplogasteria, but molecular phylogenetic evidence has shown it to be embedded in the family Rhabditidae (formerly Rhabditina). The confusion of having a hierarchical nesting of groups that were formerly mutually exclusive has led to a profusion of names. Although completely revised taxonomy of nematodes that builds on recent classification systems as well as recent phylogenetic evidence is still necessary, most contemporary taxonomic studies now treat all groups listed under "Diplogasterina" below as a single family, Diplogastridae. Subdivisions Suborder Chambersiellina Hodda 2007 Superfamily Chambersielloidea Thorne 1937 *Family Chambersiellidae Thorne 1937 (Sanwal 1957) Suborder Diplogasterina Paramonov 1952 Superfamily Cylindrocorporoidea T. Goodey 1939 Family Cylindrocorporidae T. Goodey 1939 Family Odontopharyngidae Micoletzky 1922 Superfamily Diplogasteroid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Rhabditida Rhabditida is an order of free-living, parasitic and 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 **** Cucullanidae * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Nematodes The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, 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 are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are subject ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Adenophorea Adenophorea or Aphasmidia was a class of nematodes (roundworms). It has been by and large abandoned by modern taxonomy, because there is strong evidence for it being a motley paraphyletic group of unrelated lineages of roundworms.ToL (2002) Description Amphids of Adenophoreas are always post-labial and pore-like. Deirids are not seen in Adenophoreas. Phasmids are also generally absent in Adenophoreas. Adenophreas have uninucleate hypodermal glands. Adenophoreas' excretory system is simple and non-tubular when present. Adenophoreas commonly have three caudal glands. The opening is through a spinneret at the tail tip. Male Adenophoreas generally have two testes. Caudal alae are rare in Adenophoreas. Male Adenophoreas have supplement glands situated in a single ventro-median row. Sensory papillae of Adenophoreas are in the cephalic region and along the body. Generally, Adenophoreas have five esophageal glands. Adenophorea are either marine, freshwater or terrestrial or t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tylenchida Tylenchida is an order (biology), order of nematodes. List of families * Superfamily Criconematoidea Family Criconematidae Family Tylenchulidae * Superfamily Tylenchoidea Family Anguinidae Family Belonolaimidae Family Dolichodoridae Family Ecphyadophoridae Family Hoplolaimidae Family Heteroderidae Family Pratylenchidae Family Tylenchidae * Superfamily Sphaerularina Family Allantonematidae Family Fergusobiidae Family Iotonchiidae Family Parasitylenchidae ** Family Sphaerulariidae References Further reading * Mohammad Rafiq Siddiqui. ''Tylenchida: Parasites of Plants and Insects''. 2nd ed. Wallingford: CABI Publishing, 2000. External links Order Tylenchida Nematode Identification at the University of Florida Entomology and Nematology Department {{Authority control Tylenchida, Nematode orders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Aphelenchida Aphelenchida is a moderately large order of nematodes. Aphelenchida have a stylet for feeding and a very prominent median bulb in the oesophagus. They are cosmopolitan. Some are associated with insects, and may be ectoparasites or endoparasites, or merely use the insect as transport. Others are associated with plants, as root, stem, or leaf parasites, which may be pathogenic to the plant or not. Still others are associated with fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ..., and some are free-living. There may be considerable plasticity of feeding habits within species, involving almost any combination of the categories listed above. Sometimes different feeding habits involve morphologically distinct phases, but they may involve only behavioral differences, and sometimes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Diplogasterida Diplogasterida was an order of nematodes. It was sometimes placed in a monotypic subclass Diplogasteria, but molecular phylogenetic evidence has shown it to be embedded in the family Rhabditidae (formerly Rhabditina). The confusion of having a hierarchical nesting of groups that were formerly mutually exclusive has led to a profusion of names. Although completely revised taxonomy of nematodes that builds on recent classification systems as well as recent phylogenetic evidence is still necessary, most contemporary taxonomic studies now treat all groups listed under "Diplogasterina" below as a single family, Diplogastridae. Subdivisions Suborder Chambersiellina Hodda 2007 Superfamily Chambersielloidea Thorne 1937 *Family Chambersiellidae Thorne 1937 (Sanwal 1957) Suborder Diplogasterina Paramonov 1952 Superfamily Cylindrocorporoidea T. Goodey 1939 Family Cylindrocorporidae T. Goodey 1939 Family Odontopharyngidae Micoletzky 1922 Superfamily Diplogasteroidea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Spirurida Spirurida falls under the phylum Nematoda class Chromadorea and order Rhabditida. They are characterized by their elongated, cylindrical bodies and unsegmented structure. Like all nematodes, they have neither a circulatory nor a respiratory system. Some Spirurida, like the genus '' Gongylonema'', can cause disease in humans. One such disease is a skin infection with Spirurida larvae, called " creeping disease". Some species are known as eyeworms and infect the orbital cavity of animal hosts. Systematics The Camallanida are sometimes included herein as a suborder, and the Drilonematida are sometimes placed here as a superfamily. There are doubts about the internal systematics of the Spirurida, and some groups placed herein might belong to other spirurian or even secernentean lineages.ToL (2002) The following superfamilies are at least provisionally placed in the Spirurida: * Acuarioidea * Aproctoidea * Diplotriaenoidea * Filarioidea The Filarioidea are a Taxonomic ran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Oxyurida Oxyuridomorpha is an infraorder of nematode worms in the suborder Spirurina. It was formerly considered an order within Nematoda The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitism, parasitic. Parasitic ..., under the name Oxyurida. As currently accepted, it comprises the superfamilies Oxyuroidea and Thelastomatoidea. References Parasitic nematodes of vertebrates Nematode orders {{parasitic animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]