World Library  
Flag as Inappropriate
Email this Article

Oligohymenophorea

Article Id: WHEBN0000186492
Reproduction Date:

Title: Oligohymenophorea  
Author: World Heritage Encyclopedia
Language: English
Subject: Peniculid, Hymenostome, Ichthyophthirius multifiliis, Paramecium, Plagiopylida
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Oligohymenophorea

Oligohymenophorea
Paramecium aurelia (Order Peniculida)
Scientific classification
Domain: Eukaryota
(unranked): SAR
Superphylum: Alveolata
Phylum: Ciliophora
Class: Oligohymenophorea
de Puytorac et al. 1974
Typical orders

Subclass Peniculia
    Peniculida
Subclass Hymenostomatia
    Hymenostomatida
Subclass Scuticociliatia
    Philasterida
    Pleuronematida
    Thigmotrichida
Subclass Astomatia
    Astomatida
Subclass Apostomatia
    Apostomatida
    Astomatophorida
    Pilisuctorida
Subclass Peritrichia
    Sessilida
    Mobilida

The Oligohymenophorea are a large class of ciliate protozoa. There is typically a ventral groove containing the mouth and distinct oral cilia, separate from those of the body. These include a paroral membrane to the right of the mouth and membranelles, usually three in number, to its left. The cytopharynx is inconspicuous and never forms the complex cyrtos found in similar classes. Body cilia generally arise from monokinetids, with dikinetids occurring in limited distribution over part of the body.

In most groups the body cilia are uniform and often dense, while the oral cilia are inconspicuous and sometimes reduced, but among the astomes, the mouth and associated structures have been lost altogether.

The Oligoohymenophorea were first proposed in 1974 as one of three classes of ciliates, together with the Polyhymenophorea or spirotrichs and the now abandoned Kinetofragmophora. Since then the apostomes have been added, but otherwise its composition has remained relatively constant, with the main variations being the positions of the peniculids and plagiopylids.

References

  • Puytorac, P. de, A. Batisse, J. Bohatier; J.O. Corliss, G. Deroux, P. Didier; J. Dragesco, G. Fryd-Versavel, J. Grain, C.-A. Grolière, R. Hovasse, F. Iftode, M. Laval, M. Rogue, A. Savoie, and M. Tuffrau. (1974). Proposition d'une classification du phylum Ciliophora Doflein, 1901. Comptes Rendus de l'Académie de Sciences, Paris 278: 2799-2802.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.