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Centroheliozous

De la Viquipèdia, l'enciclopèdia lliure
(S'ha redirigit des de: Centroheliozou)
Infotaula d'ésser viuCentroheliozous
Centrohelida Modifica el valor a Wikidata

Raphidiophrys contractilis Modifica el valor a Wikidata
Taxonomia
Super-regneEukaryota
OrdreCentrohelida Modifica el valor a Wikidata
Kühn 1926
Famílies[1]

Els centroheliozous o centrohèlids (Centroheliozoa o Centrohelida) són un gran grup de protistes heliozous.[2] Inclouen formes mòbils i sèssils que es troben en aigua dolça o ambients marins, especialment a una certa fondària.

Els individus són unicel·lars i esfèrics, normalment al voltant de 30–80 μm de diàmetre i coberts amb axopodis radials per capturar l'aliment i moure's.

Classificació

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La posició evolutiva d'aquest grup no està clara. Cavalier-Smith suggerí que poden estar relacionats amb Rhizaria,[3] Actualment estan classificats com Hacrobia.[4] Estan dividits en dos ordres: Pterocystida i Acanthocystida.[1]

Referències

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  1. ↑ 1,0 1,1 Cavalier-Smith, Thomas; Chao, Ema E. «Oxnerella micra sp. n. (Oxnerellidae fam. n.), a Tiny Naked Centrohelid, and the Diversity and Evolution of Heliozoa». Protist, 163, 4, 2012, pàg. 574–601. DOI: 10.1016/j.protis.2011.12.005. PMID: 22317961 [Consulta: 13 abril 2013].
  2. ↑ Nikolaev SI; Bolivar, I; Polet, S; Mylnikov, AP; Aleshin, VV; Petrov, NB; Pawlowski, J; Berney C; Fahrni JF; 3 «The twilight of Heliozoa and rise of Rhizaria, an emerging supergroup of amoeboid eukaryotes». Proc. Natl. Acad. Sci. U.S.A., 101, 21, maig 2004, pàg. 8066–8071. DOI: 10.1073/pnas.0308602101. PMC: 419558. PMID: 15148395.
  3. ↑ Cavalier-Smith T, Chao EE «Molecular phylogeny of centrohelid heliozoa, a novel lineage of bikont eukaryotes that arose by ciliary loss». J. Mol. Evol., 56, 4, abril 2003, pàg. 387–396. DOI: 10.1007/s00239-002-2409-y. PMID: 12664159.
  4. ↑ Zhao, Sen; Burki, Fabien; Bråte, Jon; Keeling, Patrick J.; Klaveness, Dag; Shalchian-Tabrizi, Kamran «Collodictyon—An Ancient Lineage in the Tree of Eukaryotes». Molecular Biology and Evolution, 29, 6, 2012, pàg. 1557–68. DOI: 10.1093/molbev/mss001. PMC: 3351787. PMID: 22319147 [Consulta: 2 març 2012].

Bibliografia

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