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Apororhynchus — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Apororhynchus
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-09T17:06:15.997Z
SHA-256 of the archived text: 562aa650c8e5e98b6c38482d7800878d51ebd30e84b4ca075c5a58369a2d77bc
Stable URL of this page: https://metraipolis.com/documento/dc_2f36633b40e2

How to cite

Apororhynchus — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Apororhynchus (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_2f36633b40e2 (Metraipolis archive dc_2f36633b40e2, sha256 562aa650c8e5e98b6c38482d7800878d51ebd30e84b4ca075c5a58369a2d77bc)

BibTeX

@misc{dc2f36633b40e2,
  title = {Apororhynchus — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Apororhynchus},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_2f36633b40e2; sha256 562aa650c8e5e98b6c38482d7800878d51ebd30e84b4ca075c5a58369a2d77bc},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Apororhynchus. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Apororhynchus is a genus of small parasitic spiny-headed (or thorny-headed) worms. It is the only genus in the family Apororhynchidae, which is the only family in the order Apororhynchida. The body consists of a short, narrow trunk and a proboscis covered with hooks, which is used for feeding and attachment. The worms range from one to five millimeters long and around half a millimeter wide, with the females being significantly larger than the males. A lack of features commonly found in the phylum Acanthocephala (primarily musculature) suggests an evolutionary branching from the other three orders of class Archiacanthocephala; however no genetic analysis has been completed to determine the evolutionary relationship between species. The distinguishing features of this order among archiacanthocephalans are a highly enlarged proboscis which contain small hooks. The musculature around the proboscis (the proboscis receptacle and receptacle protrusor) is also structured differently in this order. This genus contains six species that are distributed globally, being collected sporadically in Hawaii, Europe, North America, South America, and Asia. These worms exclusively parasitize birds by attaching themselves around the cloaca using their hook-covered proboscis. The bird hosts are of different orders, including owls, waders, and passerines. The life cycle of all Apororhynchus species remains unknown, but in common with other acanthocephalans, it likely involves a complex life cycle with at least two hosts. The intermediate hosts of Apororhynchus species have not been definitively identified, but it is believed to be an arthropod, such as an insect. Within this host, the larvae develop into an infectious stage called a cystacanth. When a vertebrate consumes the intermediate host, the cystacanths enter the vertebrate’s intestines where they mature into adult worms and reproduce sexually, and it becomes the definitive host. The resulting eggs are expelled and hatch into new larvae. Infestation by an Apororhynchus species may cause enteritis and anemia.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Apororhynchus» — https://en.wikipedia.org/wiki/Apororhynchus
Wikidata Q16528194: «genus of worms» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q16528194
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Apororhynchus?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1383640318, consultata il 2026-11-09T17:02:58.404Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: e234ef2261b8d649bc64723adff3f1efba12110c82dd11fd263a393f0cc7de00