Stentor coeruleus

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Stentor coeruleus
Scientific classification
Domain: Eukarya
(unranked): SAR
Superphylum: Alveolata
Phylum: Ciliophora
Class: Heterotrichea
Order: Heterotrichida
Family: Stentoridae
Genus: Stentor
Species: S. coeruleus
Binomial name
Stentor coeruleus
Ehrenberg, 1830[1]

Stentor coeruleus is a protist of the Stentor genus. It belongs to the Stentoridae family which is characterized by being a very large ciliate that measures 0.5 to 2 millimetres when fully extended.

Stentor coeruleus specifically appears as a very large trumpet. It contains a macronucleus that looks like a string of beads that are contained within a ciliate that is blue to blue-green in color. Being that it has many myonemes, it has the ability to contract into a ball. It has the ability to swim while both fully extended or contracted.[2]

Eating is accomplished using cilia that carry food into the ciliate's gullet.


Stentor coeruleus are capable of sexual reproduction, or conjugation, but primarily reproduce asexually by binary fission.[3]