| Filisoma | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Acanthocephala |
| Class: | Palaeacanthocephala |
| Order: | Echinorhynchida |
| Family: | Cavisomidae |
| Genus: | Filisoma Van Cleave, 1928 [1] |
Filisoma is a genus in Acanthocephala (thorny-headed worms, also known as spiny-headed worms).
The genus was described by Van Cleave in 1928. The National Center for Biotechnology Information indicates phylogenetic analysis has been published on any Filisoma species. [2]
Filisoma species consist of a proboscis covered in hooks and a trunk.[ citation needed ]
The genus FilisomaVan Cleave, 1928 contains species. [3]
The distribution of Filisoma is determined by that of its hosts.
The life cycle of an acanthocephalan consists of three stages beginning when an infective acanthor (development of an egg) is released from the intestines of the definitive host and then ingested by an arthropod, the intermediate host. Although the intermediate hosts of Filisoma are arthropods. When the acanthor molts, the second stage called the acanthella begins. This stage involves penetrating the wall of the mesenteron or the intestine of the intermediate host and growing. The final stage is the infective cystacanth which is the larval or juvenile state of an Acanthocephalan, differing from the adult only in size and stage of sexual development. The cystacanths within the intermediate hosts are consumed by the definitive host, usually attaching to the walls of the intestines, and as adults they reproduce sexually in the intestines. The acanthor is passed in the feces of the definitive host and the cycle repeats. There may be paratenic hosts (hosts where parasites infest but do not undergo larval development or sexual reproduction) for Filisoma. [12]
Filisoma parasitizes animals. There are no reported cases of Filisoma infesting humans in the English language medical literature. [11]
Cucullanorhynchus is a monotypic genus of acanthocephalans. It contains a single species, Cucullanorhynchus constrictruncatus, which infests leopards in Vietnam.
Euzetacanthus is a genus in Acanthocephala.
Spiracanthus is a monotypic genus of acanthocephalans containing a single species, Spiracanthus bovichthys, that infests animals.
Neoncicola is a genus of parasitic worms containing nine species and belongs to the family Oligacanthorhynchidae.
Tanaorhamphus is a monotypic genus of acanthocephalans containing a single species, Tanaorhamphus longirostris, that infests animals.
Eocollis is a genus in Acanthocephala.
Cathayacanthus is a genus in Acanthocephala.
Quadrigyrus is a genus in Acanthocephala.
Pararaosentis is a monotypic genus of acanthocephalans containing a single species, Pararaosentis golvani.
Cavisoma is a monotypic genus of acanthocephalans containing a single species, Cavisoma magnum, that infests animals.
Caballerorhynchus is a monotypic genus of acanthocephalans containing a single species, Caballerorhynchus lamothei, that infests animals.
Femogibbosus is a monotypic genus of acanthocephalans containing a single species, Femogibbosus assi, that infests animals.
Neorhadinorhynchus is a genus in Acanthocephala.
Pallisentis is a genus in Acanthocephala.
Gracilisentis is a genus in Acanthocephala.
Pandosentis is a genus in Acanthocephala.
Dispiron is a genus in Acanthocephala belonging to the family Neoechinorhynchidae.
Hexaspiron is a genus in Acanthocephala belonging to the family Neoechinorhynchidae.
Octospinifer is a genus in Acanthocephala belonging to the family Neoechinorhynchidae.
Paralongicollum is a genus in Acanthocephala, the thorny-headed worms, also known as spiny-headed worms.