Filipodium

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

Filipodium
Scientific classification
Domain:
Eukaryota
(unranked):
Sar
(unranked):
Alveolata
Phylum:
Miozoa
Subphylum:
Myzozoa
Infraphylum:
Dinozoa
Class:
Squirmidea[1]
Order:
Squirmida
Family:
Filipodiidae
Genus:
Filipodium

Hukui 1939
Species
  • F. aspidosiphoni Tuzet & Ormières 1965
  • F. ozakai Hukui 1939
  • F. phascolosomae Rueckert & Leander 2009

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 pellicl

The gametocysts have numerous many oocysts

The gametes dissimilar: the male gametes not flagellated

The oocysts 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
  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.
  2. Hukui (1939). "On the gregarines from Siphonosoma kumanense (Kefer-stein), Spengel". J Sci Hiroshima Uni Zool. 7: 1–23.


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