French
DeutschParaechinorhynchus
| Paraechinorhynchus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Acanthocephala |
| Class: | Eoacanthocephala |
| Order: | Neoechinorhynchida |
| Family: | Neoechinorhynchidae |
| Genus: | Paraechinorhynchus Bilqees and Khan, 1983 |
| Species: | P. kalriai |
| Binomial name | |
| Paraechinorhynchus kalriai Bilqees and Khan, 1983[1] | |
Paraechinorhynchus is a monotypic genus of acanthocephalans (thorny-headed or spiny-headed parasitic worms) containing a single species, Paraechinorhynchus kalriai, that infests the rohu.
Taxonomy[edit]
The species was described by Bilqees and Khan, 1983.[1]
Description[edit]
P. kalriai consists of a proboscis covered in 18 hooks in 3 spiral rows of 4, 6 and 8 hooks respectively, a proboscis receptacle, and a trunk.[1]
Distribution[edit]
The distribution of P. kalriai is determined by that of its hosts. It was foudn in Kalri Lake, Sind, Pakistan.[1]
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. Although the intermediate hosts of Paraechinorhynchus are ???. 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. There may be paratenic hosts (hosts where parasites infest but do not undergo larval development or sexual reproduction) for Paraechinorhynchus.[4]
P. kalriai parasitizes the rohu (Labeo rohita).[1] There are no reported cases of P. kalriai infesting humans in the English language medical literature.[3]
- Hosts for Paraechinorhynchus kalriai
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The rohu is a host for P. kalriai.
Notes[edit]
References[edit]
- ^ a b c d e Bilqees, F. M., & Aly Khan, A. K. (1983). Paraechinorhynchus kalriai ng, n. sp.(Neoechinorhynchidea: Neoechinorhynchinae) from Labeo rohita (Ham).
- ^ CDC’s Division of Parasitic Diseases and Malaria (11 April 2019). "Acanthocephaliasis". www.cdc.gov. Center for Disease Control. Archived from the original on 8 June 2023. Retrieved 17 July 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 16 July 2023.