Paramecium aurelia

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Paramecium aurelia
Scientific classification
Domain: Eukaryota
Kingdom: Protista
Phylum: Ciliophora
Class: Ciliatea
Order: Peniculida
Family: Parameciidae
Genus: Paramecium
Species: P. aurelia
Binomial name
Paramecium aurelia

Paramecium aurelia[1] are unicellular organisms belonging to the genus Paramecium of the phylum Ciliophora.[2] They are covered in cilia which help in movement and feeding.[2] Paramecium can reproduce sexually, asexually, or by the process of endomixis.[3] Paramecium aurelia demonstrate a strong “sex reaction” whereby groups of individuals will cluster together, and emerge in conjugant pairs. This pairing can last up to 12 hours, during which the micronucleus of each organism will be exchanged.[3] In Paramecium aurelia, a cryptic species complex was discovered by observation.[4] Since then, some have tried to decode this complex using genetic data.[5]


  1. ^ "Paramecium aurelia". Integrated Taxonomic Information System. 
  2. ^ a b 101 Paramecium
  3. ^ a b Sonneborn, T. M. (1937) Sex, sex inheritance and sex determination in Paramecium Aurelia. Proceedings of National Academy Science USA, 23: 378–385.
  4. ^ Sonneborn, T. M. (1975) The Paramecium-aurelia complex of 14 sibling species. Transactions of American Microscope Society, 94: 155–178.
  5. ^ Catania et al. (2009) Genetic Diversity in the Paramecium aurelia Species Complex. Molecular Biology and Evolution, 26: 421-431.