Biology:Spironemidae

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Short description: Family of heterotrophic flagellates, in the group Hemimastigophora

Spironemidae
Hemimastix amphikineta.png
Hemimastix amphikineta
Scientific classification e
Domain: Eukaryota
Phylum: Hemimastigophora
Class: Hemimastigea
Order: Hemimastigida
Family: Spironemidae
Reichenow 1928
Genera
  • Hemimastix
  • Paramastix
  • Spironema
  • Stereonema
Synonyms
  • Paramastigaceae Skuja 1948
  • Spironemataceae Doflein, 1916
  • Spironematellaceae Silva 1980

Spironemidae is a family of heterotrophic flagellates, in the group Hemimastigophora. They vary in size and shape from the ellipsoid Hemimastix amphikineta (14 × 7 μm) to the vermiform Spironema terricola (43 × 3 μm), and are united by the possession of two rows of cilia, called kineties.[1]

Phylogenomic analysis shows that Hemimastigophora are a distinct and ancient lineage of eukaryotic organisms, forming a possible sister clade to the supergroup Diaphoretickes.[2][3]

Taxonomy

Spironema multiciliatum
  • Family Spironemidae Reichenow 1928[4]
    • Genus Hemimastix Foissner, Blatterer & Foissner, 1988
      • Species H. amphikineta Foissner, Blatterer & Foissner, 1988
      • Species H. kukwesjijk Eglit & Simpson, 2018[2]
    • Genus Stereonema Foissner& Foissner, 1993 non Kützing 1836
      • Species S. geiseri Foissner & Foissner, 1993
    • Genus Spironema Klebs, 1893 non Vuillemin 1905 non Léger & Hesse 1922 non Rafinesque 1838 non Hochst. 1842 non Lindley 1840 non Meek 1864; Spironematella Silva 1970]
        • Species S. multiciliatum Klebs, 1893 [Spironematella multiciliata (Klebs 1893) Silva 1970]
      • Species S. terricola Foissner & Foissner, 1993
      • Species S. goodeyi Foissner & Foissner, 1993
    • Genus Paramastix Skuja 1948
      • Species P. lata Skuja 1956
      • Species P. minuta Skuja 1964
      • Species P. conifera Skuja 1948
      • Species P. truncata Skuja 1948

References

  1. Ilse Foissner & Wilhelm Foissner (1993). "Revision of the family Spironemidae Doflein (Protista, Hemimastigophora), with description of two new species, Spironema terricola n. sp. and Stereonema geiseri n. g., n. sp.". Journal of Eukaryotic Microbiology 40 (4): 422–438. doi:10.1111/j.1550-7408.1993.tb04936.x. 
  2. 2.0 2.1 Lax, Gordon; Eglit, Yana; Eme, Laura; Bertrand, Erin M.; Roger, Andrew J.; Simpson, Alastair G. B. (2018-11-14). "Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes" (in En). Nature 564 (7736): 410–414. doi:10.1038/s41586-018-0708-8. ISSN 0028-0836. PMID 30429611. Bibcode2018Natur.564..410L. 
  3. Chung, Emily (Nov 15, 2018). "Rare microbes lead scientists to discover new branch on the tree of life" (in en-US). CBC (CBC News). https://www.cbc.ca/news/technology/hemimastigotes-supra-kingdom-1.4715823. 
  4. Part 1 - Virae, Prokarya, Protists, Fungi. http://mave.tweakdsl.nl/tn/genera1.html. Retrieved 30 June 2016. 

Wikidata ☰ Q5365037 entry