| Hystrichis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Nematoda |
| Class: | Chromadorea |
| Order: | Ascaridida |
| Family: | Dioctophymatidae |
| Genus: | Hystrichis Dujardin, 1845 [1] |
Hystrichis is a genus of nematode worm with a spinose anterior end, resembling the introvert of priapulids. [2] Species of Hystrichis live mainly in the digestive tract of aquatic birds. [3]
Enoplea (enopleans) is a class, which with the classes Secernentea and Chromadorea make up the phylum Nematoda in current taxonomy. The Enoplea are considered to be a more ancestral group than the Chromadorea, and researchers have referred to its members as the "ancestrally diverged nematodes", compared to the "more recently diverged nematodes" of Chromadorea.
Cristidiscoidea or Nucleariae is a proposed basal holomycota clade in which Fonticula and Nucleariida emerged, as sister of the fungi. Since it is close to the divergence between the main lineages of fungi and animals, the study of Cristidiscoidea can provide crucial information on the divergent lifestyles of these groups and the evolution of opisthokonts and slime mold multicellularity. The holomycota tree is following Tedersoo et al.
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- ; rhabditis = rod-like. 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 nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Taxonomically, they are classified along with insects and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but as their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, it shows that the reduction has occurred within the nematode phylum.
Angiostoma is a genus of parasitic nematodes in the family Angiostomatidae.
Huffmanela is a genus of parasitic nematodes, belonging to the family Trichosomoididae.
Longidorus is a genus of needle nematodes. Some of its species are plant pests.
Diplogastridae, formerly Diplogasteridae, are a family of nematodes (roundworms) known from a wide range of habitats, often in commensal or parasitic associations with insects.
Pristionchus is a genus of nematodes (roundworms) in the family Diplogastridae that currently includes more than 50 described species. They are known mainly as non-parasitic associates of insects, especially beetles, while others have been reported from soil, organic matter, or rotting wood. The genus includes P. pacificus, a satellite model organism to the well-studied nematode Caenorhabditis elegans.
Paratrichodorus is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae family (trichorids), being one of five genera. They are economically important plant parasites and virus vectors. The females are didelphic, and are distributed worldwide.
Trichodoridae is a family of terrestrial root feeding nematodes, being one of two that constitute suborder Triplonchida. They are economically important plant parasites and virus vectors.
Strongyloides ardeae is a parasitic roundworm infecting the small intestine of yellow-crowned night heron, Nyctanassa violacea, and eastern green heron, Butorides virescens. It was first described from Louisiana.
Strongyloides serpentis is a parasitic roundworm infecting the intestine of the green water snake, hence its name. It was first described from Louisiana.
Strongyloides gulae is a parasitic roundworm infecting the esophagus of the green water snake, as well as eight other species of snakes. It was first described from Louisiana.
Heydenius is a collective group genus of fossil nematodes from the Tertiary period that cannot be placed in extant genera.
Myolaimidae is a family of nematodes in the order Rhabditida. It consists of a single genus, Myolaimus Cobb, 1920.
František Moravec is a Czech parasitologist who specialised on the Nematodes, especially the nematodes parasites of fishes. His research was mainly in the field of taxonomy of the Nematoda.
Hysterothylacium is a genus of parasitic roundworms in the family Raphidascarididae. As of 2020 it consists of over 70 species and is considered one of the largest of the ascaridoid genera parasitising fish.
Syncuaria is a genus of parasites in the family Acuariidae, first described in 1927. They are usually found in the gizzard lining of the aquatic birds that they parasitize which belong to Pelecaniformes, Ciconiiformes and Podicipediformes. The genus is characterized by, among other things, cordons on the bodies lateral sides that are linked by anastomosis, and monodelphy. Synonyms include: Skrjabinocara (Kurashvili), Chordocephalus (Alegret), and Decorataria (Sobolev).
István Andrássy was a Hungarian nematologist. Starting with his first publication in 1952 on the nematode fauna of Mount Bükk, over his dissertation in 1973 on the evolution of nematodes to his last days he was a very prolific scientist, publishing more than 200 manuscripts, chapters and books on the class of Nematoda. He described 530 taxa of nematodes and at least 60 nematode taxa are named after him, which shows the huge respect he had in the nematologists world.
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