Oligotrich

Oligotrichs
Halteria sp.
Scientific classification
Domain:	Eukaryota
(unranked):	Alveolata
Phylum:	Ciliophora
Class:	Spirotrichea
Subclass:	Oligotrichia Bütschli 1887
Typical orders
Halteriida Strombidiida

The oligotrichs are a group of ciliate protozoa, included among the spirotrichs. They have prominent oral cilia, which are arranged as a collar and lapel, in contrast to the choreotrichs where they form a complete circle. The body cilia are reduced to a girdle and ventral cilia. In Halteria and its relatives, they form bristles or cirri; however these forms may be closer relatives of the stichotrichs than of other oligotrichs. These organisms are very common in plankton communities, especially in marine systems. Usually found in concentrations of about 1 per ml, they are the most important herbivores in the sea, the first link in the food chain.

This protist-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Ciliates Protist stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем сделать НИР SGI Altix 350 WCLQ Look at other dictionaries: oligotrich — ▪ ciliate       any spherical to pear shaped protozoan of the ciliate order Oligotrichida, found in fresh, salt, and brackish water. Body cilia (minute, hairlike projections), when present, are often fused into groups of bristles, or cirri. The… …   Universalium Spirotrich — Taxobox | color = khaki name = Spirotrichs image caption = Euplotes, a spirotrich domain = Eukaryota unranked phylum = Alveolata phylum = Ciliophora classis = Spirotrichea classis authority = Bütschli 1889 subdivision ranks = Typical sublasses… …   Wikipedia Stichotrich — Taxobox | color = khaki name = Stichotrichs image caption = Stichotrich domain = Eukaryota unranked phylum = Alveolata phylum = Ciliophora classis = Spirotrichea subclassis = Stichotrichia subclassis authority = Small Lynn 1985 subdivision ranks …   Wikipedia Holotrich — Holotrichs are ciliate protozoa that have relatively uniform cilia over their body, and lack or only have a few prominent oral membranelles. Most of the major lines of ciliates are holotrichous. They do not form a natural group, so the term is… …   Wikipedia Tintinnid — Taxobox | color = khaki name = Tintinnids image width = 200px domain = Eukaryota unranked phylum = Alveolata phylum = Ciliophora classis = Spirotrichea subclassis = Choreotrichia ordo = Tintinnida ordo authority = Kofoid Campbell, 1929Tintinnids… …   Wikipedia protozoan — /proh teuh zoh euhn/, n., pl. protozoans, (esp. collectively) protozoa / zoh euh/, adj. Biol. n. 1. any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are… …   Universalium spirotrich — ▪ microorganism       (class Spirotrichea), any of a group of ciliated protozoans characterized by nonuniform, sparse ciliation and prominent membranelles of fused cilia around the mouth opening. The subclass contains a number of orders. See… …   Universalium trichite — SYN: trichocyst. * * * tri·chite (triґkīt) [Gr. thrix hair] 1. trichocyst. 2. nematodesma. 3. a hollow, rodlike, subpellicular component of the skeleton of oligotrich ciliates …   Medical dictionary 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”