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From Wikipedia, the free encyclopedia

Stenophoricae
Scientific classification
Domain:
(unranked):
(unranked):
Phylum:
Class:
Subclass:
Order:
Suborder:
Superfamily:
Stenophoricae
Families

Acutidae
Amphiplatysporidae
Brustiophoridae
Cnemidosporidae
Dactylophoridae
Leidyanidae
Monoductidae
Monoicidae
Sphaerocystidae
Stenophoridae
Trichorhynchidae

Stylocephaloidea is a superfamily of parasites of the phylum Apicomplexia.

Taxonomy

There are eleven families in this taxon.

History

This superfamily was created by Levine in 1984.[1] Its description was emended by Clopton in 2009.[2]

It was previously designated Solitaricae by Chakravarty in 1960.

Description

Species in this superfamily infect only a single host during their life cycle.

The trophozoites are solitary and may develop either intracellularly or extracellularly.

The epimerite varies in its structure between species.

The gametocysts may or may not have sporoducts. They have a hyaline epicyst.

Oocysts are released in a variety of ways depending on the species:

  • Dehiscence of the gametocyst and release of single oocysts en masse
  • Release of oocysts in polyete chains from the gametocyst
  • Rupture of a gametocyst valve and release of oocysts in monete chains
  • Expulsion of isolated oocysts en masse

Differential diagnosis

This superfamily is distinguished by the Porosporidae by only having one host in the life cycle.

It is distinguished from the Gregarinicae by the lack of formation of association between the parasites before gametocyst formation. Members of the Gregarinicae typically form associations before they mature. This occurs some time before the onset of syzygy.

References

  1. ^ Levine ND (1984) Nomenclatoral corrections and new taxa in the apicomplexan protozoa. Trans American MicroscSoc 103 :195—204
  2. ^ Clopton, Richard E. (2009). "Phylogenetic Relationships, Evolution, and Systematic Revision of the Septate Gregarines (Apicomplexa: Eugregarinorida: Septatorina)" (PDF). Comparative Parasitology. 76 (2): 167–190. doi:10.1654/4388.1.


This page was last edited on 26 February 2021, at 17:44
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