Octospinifer

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Octospinifer
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Acanthocephala
Class: Eoacanthocephala
Order: Neoechinorhynchida
Family: Neoechinorhynchidae
Genus: Octospinifer
Van Cleave, 1919

Octospinifer is a genus in Acanthocephala (thorny-headed worms, also known as spiny-headed worms) belonging to the family Neoechinorhynchidae. [1]

Contents

Taxonomy

The genus was described by Van Cleave in 1919. A phylogenetic analysis has been published on O. macilentus. [2]

Description

Octospinifer species consist of a proboscis covered in hooks and a trunk.

Species

The genus OctospiniferVan Cleave, 1919 contains four species.

Parasitizes the white sucker, (Catostomus commersonii). [3]

Parasitizes the rohu (Labeo rohita) in Kinjar Lake, Sind, Pakistan. [4]

Parasitizes the Sacramento sucker (Catostomus occidentalis) in Clear Lake California.

Distribution

The distribution of Octospinifer is determined by that of its hosts. The species of this genus are found in Northern America. [1]

Hosts

Life cycle of Acanthocephala. Acanthocephala LifeCycle lg.jpg
Life cycle of Acanthocephala.

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 Octospinifer 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 Octospinifer. [9]

Octospinifer parasitizes animals. There are no reported cases of Octospinifer infesting humans in the English language medical literature. [8]

Notes

  1. ↑ A binomial authority in parentheses indicates that the species was originally described in a genus other than Octospinifer. Octospinifer variabilis was originally named Echinorhynchus variabilis by Diesing in 1851.
  2. ↑ There are no known aberrant human infections for Octospinifer species. [8]

References

  1. 1 2 "Octospinifer Van Cleave, 1919". www.gbif.org. Retrieved 5 July 2021.
  2. ↑ Schoch, Conrad L; Ciufo, Stacy; Domrachev, Mikhail; Hotton, Carol L; Kannan, Sivakumar; Khovanskaya, Rogneda; Leipe, Detlef; Mcveigh, Richard; O’Neill, Kathleen; Robbertse, Barbara; Sharma, Shobha; Soussov, Vladimir; Sullivan, John P; Sun, Lu; Turner, Seán; Karsch-Mizrachi, Ilene (2020). "NCBI Taxonomy: a comprehensive update on curation, resources and tools". Taxonomy Browser. NCBI. Retrieved 1 April 2024.
  3. ↑ Beermann, Ildiko; Arai, Hisao P.; Costerton, J. W. (1974). "The ultrastructure of the lemnisci and body wall of Octospinifer macilentus (Acanthocephala)" . Canadian Journal of Zoology. 52 (5): 553–555. doi:10.1139/z74-071. PMID   4840649.
  4. 1 2 ZUBERI, H. B., & FAROOQ, M. (1975). OCTOSPINIFER ROHITAII, A NEW ACANTHOCEPHALA FROM A FRESH WATER FISH LABEO ROHITA OF KINJAR LAKE, SIND, PAKISTAN. Sind University Research Journal: Science series, 9, 43.
  5. ↑ Van Cleave, Harley J.; Haderlie, E. C. (10 May 2024). "A New Species of the Acanthocephalan Genus Octospinifer from California" . The Journal of Parasitology. 36 (2): 169–173. doi: 10.2307/3273597 . JSTOR   3273597.
  6. ↑ Kritscher, E. (1976). Echinorhynchus variabilis Diesing 1851 nec 1856= Octospinifer variabilis (Diesing 1851) nov. comb.(Acanthocephala, Neoechinorhynchidae). Annalen des Naturhistorischen Museums in Wien, 443-449.
  7. ↑ 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.
  8. 1 2 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.
  9. ↑ 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.
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