Ascetosporea

Ascetosporea
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Cercozoa
Class:	Ascetosporea; Desportes & Ginsburger-Vogel, 1977 emend. Cavalier-Smith 2009
Order
	Claustrosporida; Mikrocytida; Paradiniida; Paramyxida; Haplosporida;
Synonyms
	Ascetospora Sprague 1979; Stellatosporea; Aplosporidies Caullery & Mesnil, 1899;

The Ascetosporea are a group of eukaryotes that are parasites of animals, especially marine invertebrates. The two groups, the haplosporids and paramyxids, are not particularly similar morphologically, but consistently group together on molecular trees, which place them near the base of the Cercozoa.^[1] Both produce spores without the complex structures found in similar groups (such as polar filaments or tubules).

Haplosporid spores have a single nucleus and an opening at one end, covered with an internal diaphragm or a distinctive hinged lid. After emerging, it develops within the cells of its host, usually a marine mollusc or annelid, although some infect other groups or freshwater species. The trophic cell is generally multinucleated. Paramyxids develop within the digestive system of marine invertebrates, and undergo internal budding to produce multicellular spores.

A 2009 study concluded that Haplosporidium species form a paraphyletic group and that the taxonomy of the haplosporidians needs a thorough revision.^[2]

Taxonomy[]

Class Ascetosporea Desportes & Ginsburger-Vogel, 1977 emend. Cavalier-Smith 2009^[3]^[4]^[5]

Genus ? Comps, Park & Desportes 1986
Genus ? Purrini & Weiser 1991
Order Claustrosporida Cavalier-Smith 2003
- Family Larsson 1987
  - Genus Larsson 1987
Order Paradiniida Cavalier-Smith 2009
- Family Schiller 1935
  - Genus Chatton, 1910
Order Mikrocytida Hartikainen et al. 2014^[6]
- Family Hartikainen et al. 2014
  - Genus Hartikainen et al. 2014
  - Genus Farley, Wolf & Elston 1988
Order Paramyxida Chatton 1911 [Paramyxea Chatton 1911; Paramyxidea Chatton 1911; Paramyxa]
- Family Grizel et al. 1974 [Occlusosporida; Marteiliida Desportes & Ginsburger-Vogel, 1977; Marteiliidea Desportes & Ginsburger-Vogel, 1977]
  - Genus Ginsburger-Vogel & Desportes 1979
  - Genus Marteilia Grizel et al. 1974
- Family Chatton 1911
  - Genus Chatton 1911
Order Haplosporida Caullery & Mesnil 1899 [Balanosporida Sprague, 1979; Haplosporidia Hall, 1953; Haplosporea Caullery 1953; Haplospora Margulis & Schwartz, 1998; Haplosporidiidea Poche, 1913; Haplosporidies Caullery and Mesnil, 1905]
- Genus ? Mesnil & Caullery 1897 non Weiser & McCauley 1974
- Genus ? Gibbs 1959
- Family Sprague 1970 [Nephridiophagea]
  - Genus Nephridiophaga Woolever 1966 [ Mesnil & Marchoux 1897]
- Family Sprague 1979 [Anurosporidiidae]
  - Genus Urosporidium Caullery & Mesnil 1905 [ Caullery & Chappelier 1906] (8 species)
- Family Sprague 1979
  - Genus Bonamia Pichot et al. 1980
  - Genus Haplosporidium Caullery & Mesnil 1899 (23 species)
  - Genus (Lankester 1895) Labbe 1896 (5 species)

References[]

^ Thomas Cavalier-Smith & Ema E.-Y. Chao (2003). "Phylogeny of Choanozoa, Apusozoa, and other Protozoa and early eukaryote megaevolution". Journal of Molecular Evolution. 56 (5): 540–563. Bibcode:2003JMolE..56..540C. doi:10.1007/s00239-002-2424-z. PMID 12698292. S2CID 30773513.
^ P. M. Hine; R. B. Carnegie; E. M. Burreson; M. Y. Engelsma (2009). "Inter-relationships of haplosporidians deduced from ultrastructural studies" (PDF). . 83 (3): 247–256. doi:10.3354/dao02016. PMID 19402456.
^ Brands, S.J. (ed.). "Class Ascetosporea Sprague 1979". The Taxonomicon. Zwaag, The Netherlands: Universal Taxonomic Services. Retrieved August 14, 2016.CS1 maint: extra text: authors list (link)
^ "Part 1- Virae, Prokarya, Protists, Fungi". Collection of genus-group names in a systematic arrangement. Archived from the original on 14 August 2016. Retrieved 30 June 2016.
^ Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M. (2015-04-29). "A Higher Level Classification of All Living Organisms". PLOS ONE. 10 (4): e0119248. Bibcode:2015PLoSO..1019248R. doi:10.1371/journal.pone.0119248. ISSN 1932-6203. PMC 4418965. PMID 25923521.
^ Hartikainen; et al. (2014). "Mikrocytids Are a Broadly Distributed and Divergent Radiation of Parasites in Aquatic Invertebrates" (PDF). Current Biology. 24 (7): 807–812. doi:10.1016/j.cub.2014.02.033. PMID 24656829. Retrieved 30 June 2016.

This Cercozoa-related article is a stub. You can help Wikipedia by .

This article related to a parasitic member of the SAR supergroup is a stub. You can help Wikipedia by .

[1] Thomas Cavalier-Smith & Ema E.-Y. Chao (2003). "Phylogeny of Choanozoa, Apusozoa, and other Protozoa and early eukaryote megaevolution". Journal of Molecular Evolution. 56 (5): 540–563. Bibcode:2003JMolE..56..540C. doi:10.1007/s00239-002-2424-z. PMID 12698292. S2CID 30773513.

[2] P. M. Hine; R. B. Carnegie; E. M. Burreson; M. Y. Engelsma (2009). "Inter-relationships of haplosporidians deduced from ultrastructural studies" (PDF). . 83 (3): 247–256. doi:10.3354/dao02016. PMID 19402456.

[3] Brands, S.J. (ed.). "Class Ascetosporea Sprague 1979". The Taxonomicon. Zwaag, The Netherlands: Universal Taxonomic Services. Retrieved August 14, 2016.CS1 maint: extra text: authors list (link)

[4] "Part 1- Virae, Prokarya, Protists, Fungi". Collection of genus-group names in a systematic arrangement. Archived from the original on 14 August 2016. Retrieved 30 June 2016.

[5] Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M. (2015-04-29). "A Higher Level Classification of All Living Organisms". PLOS ONE. 10 (4): e0119248. Bibcode:2015PLoSO..1019248R. doi:10.1371/journal.pone.0119248. ISSN 1932-6203. PMC 4418965. PMID 25923521.

[6] Hartikainen; et al. (2014). "Mikrocytids Are a Broadly Distributed and Divergent Radiation of Parasites in Aquatic Invertebrates" (PDF). Current Biology. 24 (7): 807–812. doi:10.1016/j.cub.2014.02.033. PMID 24656829. Retrieved 30 June 2016.

[1]

[2]

[3]

[4]

[5]

[6]

Ascetosporea

Taxonomy[]

See also[]

References[]