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Balantidium
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Balantidium
Balantidium coli trophozoite
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Sar
Superphylum: Alveolata
Phylum: Ciliophora
Class: Litostomatea
Order: Vestibuliferida
Family: Balantidiidae
Genus: Balantidium
Claparède & Lachmann, 1858[1]
Type species
Balantidium entozoon[1]
Synonyms
  • Balantidiopsis Bütschli, 1889
  • Balantioides Alexeieff, 1931
  • Bolantidium
  • Parabursaria Ghosh, 1921
  • Paranyctotherus Sandon, 1941

Balantidium is a genus of ciliates. It contains the parasitic species Balantidium coli, the only known cause of balantidiasis.[2]

History

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The first-described species of Balantidium, B. entozoon, was described in 1838 by Ehrenberg as a member of the genus Bursaria. Balantidium coli observed in patients with dysentery was originally described as Paramecium coli by Malmstein in 1857. In 1858, Edouard Claparède and Johannes Lachmann created the genus Balantidium and reclassified B. entozoon as its type species.[3] Stein in 1863, reclassified Paramecium coli into the genus Balantidium.

Transcriptomics

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Transcriptome data for Balantidium ctenopharyngodoni, from single-cell transcriptome sequencing, were published in 2017 and were the first omics data within the subclass Trichostomatia.[4]

Taxonomy

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A separate genus – Neobalantidium – has been created for several of these species.[5] Balantidium coli is one of the species that has been reclassified. It has also been proposed that it is a junior synonym of genus Balantioideswhich has B. coli as the type species.[6]

The closest known relative of this genus is Buxtonella sulcata, a parasite of cattle.

Species

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There are 72 species in the genus.[7]

References

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