Polychaos dubium

Polychaos dubium
Scientific classification
Domain:
Eukaryota
(unranked):
Amoebozoa
Class:
Tubulinea
Order:
Tubulinida
Family:
Amoebidae
Genus:
Polychaos
Species:
P. dubium
Binomial name
Polychaos dubium
(Schaeffer, 1916) Schaeffer, 1926[1]
Synonyms
  • Amoeba dubia Schaeffer, 1916[2]
  • Polychaos dubia Schaeffer, 1926

Polychaos dubium is a freshwater amoeboid and one of the larger species of single-celled eukaryote. Like other amoebozoans, P. dubium moves by means of temporary projections called pseudopods. P. dubium reportedly has one of the largest genome size of any organism known,[3] though the authors of a 2004 study suggest treating that measurement with caution.[4]

Polychaos dubium was previously known as Amoeba dubia.[2] The author who named the species later recognized it as different from species of Amoeba, and so designated it the type species of the genus Polychaos.[1] Unlike species of Amoeba, P. dubium lacks longitudinal ridges on its pseudopods.[5]

  1. ^ a b Schaeffer, Asa Arthur (1926a). "Taxonomy of the amebas, with descriptions of thirty-nine new marine and freshwater species". Papers from the Department of Marine Biology of the Carnegie Institution of Washington. 24: 115 pp. 12 plates.
  2. ^ a b Schaeffer, Asa A. (1916). "Notes on the specific and other characters of Amoeba proteusPall. (Leidy), A. discoides spec. nov., and A. dubia spec. nov". Archiv für Protistenkunde. 37: 204–228.
  3. ^ Laura Wegener Parfrey; Daniel J G Lahr; Laura A Katz (April 2008). "The dynamic nature of eukaryotic genomes". Molecular Biology and Evolution. 25 (4): 787–94. doi:10.1093/MOLBEV/MSN032. ISSN 0737-4038. PMC 2933061. PMID 18258610. Wikidata Q24618570.
  4. ^ Cite error: The named reference McGrath & Katz 2004 was invoked but never defined (see the help page).
  5. ^ Lee, J.J.; Hutner, S.H.; Bovee, E.C., eds. (1985). Illustrated Guide to the Protozoa. Lawrence, Kansas: Society of Protozoologists. pp. ix + 630 pages.