Stentor Coeruleus
Encyclopedia
Stentor coeruleus is a protist
Protist
Protists are a diverse group of eukaryotic microorganisms. Historically, protists were treated as the kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms, but this group is contested in modern taxonomy...

 of the Stentor
Stentor (protozoa)
Stentor, sometimes called trumpet animalcules, are a genus of filter-feeding, heterotrophic ciliate protists, representative of the heterotrichs...

 genus. It belongs to the Stentoridae family which is characterized by being a very large ciliate
Ciliate
The ciliates are a group of protozoans characterized by the presence of hair-like organelles called cilia, which are identical in structure to flagella but typically shorter and present in much larger numbers with a different undulating pattern than flagella...

 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.

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

Stentor Coeruleus is known to habituate to its environment.

Reproduction

Stentor Coeruleus may reproduce by a form of sexual reproduction
Sexual reproduction
Sexual reproduction is the creation of a new organism by combining the genetic material of two organisms. There are two main processes during sexual reproduction; they are: meiosis, involving the halving of the number of chromosomes; and fertilization, involving the fusion of two gametes and the...

 called conjugation.
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