Filipodium

Filipodium
Scientific classification
Domain:	Eukaryota
(unranked):	Sar
(unranked):	Alveolata
Phylum:	Miozoa
Subphylum:	Myzozoa
Infraphylum:	Dinozoa
Class:	Squirmidea
Order:	Squirmida
Family:	Filipodiidae
Genus:	Filipodium; Hukui 1939
Species
	F. aspidosiphoni Tuzet & Ormières 1965; F. ozakai Hukui 1939; F. phascolosomae Rueckert & Leander 2009;

Filipodium is a genus of parasites in the phylum Apicomplexa. Species in this genus infect marine invertebrates.

This genus was described by Hukui in 1939.^[2]

Taxonomy

The type species is Filipodium ozakai.

Description

The mucron is broadly funnel-shaped with papillae around its rim. The gamonts are elongate, with longitudinal striations and with many protrusible filaments emerging from beneath the pellicle. The gametocysts have numerous oocysts. The gametes are dissimilar: the male gametes are not flagellated. The oocysts are ellipsoidal or ovoid and have 8 sporozoites.

Life cycle

The species infects sipunculid worms.

The parasite infects the gastrointestinal tract and is presumably transmitted by the orofaecal route but the details of this mechanism are presently unknown.

Host record

F. ozakii — Siphonosoma kumanense

References

^ Cavalier-Smith, Thomas (2014). "Gregarine site-heterogeneous 18S rDNA trees, revision of gregarine higher classification, and the evolutionary diversification of Sporozoa". European Journal of Protistology. 50 (5): 472–495. doi:10.1016/j.ejop.2014.07.002. PMID 25238406.
^ Hukui, Tosito (1939). "On the gregarines from Siphonosoma cumanense (Keferstein), Spengel". Journal of Science, Hiroshima University, Division 1, Zoology. 7: 1–23.

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[1] Cavalier-Smith, Thomas (2014). "Gregarine site-heterogeneous 18S rDNA trees, revision of gregarine higher classification, and the evolutionary diversification of Sporozoa". European Journal of Protistology. 50 (5): 472–495. doi:10.1016/j.ejop.2014.07.002. PMID 25238406.

[Hukui1939-2] Hukui, Tosito (1939). "On the gregarines from Siphonosoma cumanense (Keferstein), Spengel". Journal of Science, Hiroshima University, Division 1, Zoology. 7: 1–23.

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