Stenophoricae

Stenophoricae
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Alveolata
Phylum:	Apicomplexa
Class:	Conoidasida
Subclass:	Gregarinasina
Order:	Eugregarinorida
Suborder:	Septatorina
Superfamily:	Stenophoricae
Families
	; ; ; ; ; ; ; ; ; ;

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 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 varies in its structure between species.

The may or may not have . 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[]

^ Levine ND (1984) Nomenclatoral corrections and new taxa in the apicomplexan protozoa. Trans American MicroscSoc 103 :195—204
^ 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.

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[Levine1984-1] Levine ND (1984) Nomenclatoral corrections and new taxa in the apicomplexan protozoa. Trans American MicroscSoc 103 :195—204

[Clopton2009-2] 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.

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