Palliolisentis
| Palliolisentis | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Acanthocephala |
| Class: | Eoacanthocephala |
| Order: | Gyracanthocephala |
| Family: | Quadrigyridae |
| Subfamily: | Pallisentinae |
| Genus: | Palliolisentis Machado-Filho, 1960 |
| Type species | |
| Palliolisentis quinqueungulis Machado-Filho, 1960
| |
| Other species | |
| |
Palliolisentis is a genus in Acanthocephala (parasitic thorny-headed worms, also known as spiny-headed worms).
Taxonomy[edit]
The type species is Palliolisentis quinqueungulis.
Description[edit]
Palliolisentis has a cylindrical Proboscis armed with 6–12 longitudinal rows of hooks and a trunk with single field of spines.[1]
Species[edit]
The genus Palliolisentis Machado-Filho, 1960 contains three species:[2]
- Palliolisentis ornatus Machado-Filho, 1960
- Palliolisentis polyonca Schmidt and Hugghins, 1973
- Palliolisentis quinqueungulis Machado-Filho, 1960 (type species)
Distribution[edit]
The distribution of Palliolisentis species is determined by that of its hosts.
Hosts[edit]
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. The intermediate hosts of most Palliolisentis species are not known. 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 are passed in the feces of the definitive host and the cycle repeats.[5]
There are no reported cases of any Palliolisentis species infesting humans in the English language medical literature.[4]
Notes[edit]
References[edit]
- ^ https://www.cabidigitallibrary.org/doi/pdf/10.5555/20133115108
- ^ https://web.archive.org/web/20180720040212id_/http://folia.paru.cas.cz/pdfs/fol/2013/04/01.pdf
- ^ CDC’s Division of Parasitic Diseases and Malaria (April 11, 2019). "Acanthocephaliasis". www.cdc.gov. Center for Disease Control. Archived from the original on 8 June 2023. Retrieved July 17, 2023.
- ^ a b Mathison, BA; et al. (2021). "Human Acanthocephaliasis: a Thorn in the Side of Parasite Diagnostics". J Clin Microbiol. 59 (11): e02691-20. doi:10.1128/JCM.02691-20. PMC 8525584. PMID 34076470.
- ^ Schmidt, G.D. (1985). "Development and life cycles". In Crompton, D.W.T.; Nickol, B.B. (eds.). Biology of the Acanthocephala (PDF). Cambridge: Cambridge Univ. Press. pp. 273–305. Archived (PDF) from the original on 22 July 2023. Retrieved 17 July 2023.