Carchesium (genus)

Carchesium
Scientific classification
(unranked):	SAR
Phylum:	Ciliophora
Class:	Oligohymenophorea
Subclass:	Peritrichia
Order:	Sessilida
Family:	Vorticellidae
Genus:	Carchesium; Ehrenberg, 1830

Carchesium is a genus of usually colonial peritrich ciliates in the Vorticellidae with a spirally contractile stalk.^[1]^[2] The inverted bell-shaped cells have an oral lip as in Epistylis.

The genus has a cosmopolitan diribution in freshwater and is a common part of the fauna of the aerobic stages of waste water treatment plants, such as activated sludge and trickling filters.^[3]

Drawing of C. polypinum from The Popular Science Monthly, 1874

References

1 2 "The World of Protozoa, Rotifera, Nematoda and Oligochaeta". Retrieved 7 January 2023.
↑ Manwell, Reginald D. (1968). "16 Ciliophora Fig 16.5". Introduction to Protozoology (2nd ed.). Dover. pp. 331–2. ISBN 978-0-486-61897-5. OCLC 595572282.
↑ Martin, D. (August 1968). Microfauna of Biological Filters. University of Newcastle upon Tyne - Department of Civil Engineering. Bulletin. Vol. 39. Oriel Press. p. 38. ISBN 978-0-85362-054-9.

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[nies-1] 1 2 "The World of Protozoa, Rotifera, Nematoda and Oligochaeta". Retrieved 7 January 2023.

[2] Manwell, Reginald D. (1968). "16 Ciliophora Fig 16.5". Introduction to Protozoology (2nd ed.). Dover. pp. 331–2. ISBN 978-0-486-61897-5. OCLC 595572282.

[3] Martin, D. (August 1968). Microfauna of Biological Filters. University of Newcastle upon Tyne - Department of Civil Engineering. Bulletin. Vol. 39. Oriel Press. p. 38. ISBN 978-0-85362-054-9.

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