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Archamoebae

Archamoebae
Entamoeba histolytica trophozoite
Scientific classification Edit this classification
Domain: Eukaryota
(unranked): Unikonta
Phylum: Amoebozoa
Clade: Evosea
Subphylum: Conosa
Infraphylum: Archamoebae
Cavalier-Smith 1998
Families and orders
Synonyms
  • Karyoblastea Margulis & Schwartz 1982
  • Peloflagellatea Goodkov & Seravin 1991
  • Caryoblastea
  • Entamoebea Cavalier-Smith 1991
  • Rhizoflagellata Saville Kent 1880
  • Mastigamoebomonada Starobogatov & Seravin 1980

The Archamoebae are an important group of amoebae.[1] They are unusual among protists because they have no mitochondria.[2]

The group includes many genera which are internal parasites or commensals of animals: for example Entamoeba and Endolimax. Some are human pathogens, causing diseases such as amoebic dysentery. Other genera of archamoebae live in freshwater habitats, and have flagella. Most have a single nucleus and flagellum, but the giant amoeba Pelomyxa has many of each.

Analysis of 100 genes shows that the Archamoebae are part of the Amoebozoa which have lost their mitochondria. They are close relatives of the slime moulds. Parasitic and commensal forms like Entamoeba and Endolimax developed separately from free-living ancestors.[3]

References

  1. ↑ Cavalier-Smith T 1998 (2007). "A revised six-kingdom system of life". Biol Rev Camb Philos Soc. 73 (3): 203–66. doi:10.1111/j.1469-185X.1998.tb00030.x. PMID 9809012. S2CID 6557779. Retrieved 2016-02-23.{{cite journal}}: CS1 maint: deprecated archival service (link) CS1 maint: numeric names: authors list (link)
  2. ↑ Cavalier-Smith T. 1991. (1991). "Archamoebae: the ancestral eukaryotes?". BioSystems. 25 (1–2): 25–38. Bibcode:1991BiSys..25...25C. doi:10.1016/0303-2647(91)90010-I. PMID 1854912.{{cite journal}}: CS1 maint: numeric names: authors list (link)
  3. ↑ Bapteste E; Brinkmann H; Lee J.A. et al 2002. The analysis of 100 genes supports the grouping of three highly divergent amoebae: Dictyostelium, Entamoeba, and Mastigamoeba. Proc. Natl. Acad. Sci. U.S.A. 99 (3): 1414–9. PMID 11830664. [1][permanent dead link]

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