Diplomonad

Trepomonas steini

The Diplomonadida or diplomonads are a group of protists that belong to the excavata. Her most famous representative is Giardia intestinalis, which triggers giardiasis in humans and other mammals, a strong diarrheal disease.

Features

Diplomonadida each have two Kinetiden and two cell nuclei, each Kinetide in turn has four (sometimes two or three) kinetosomes and flagella, often there is a Kinetid with a core. The Kinetid has one of the flagella to the back where they zuarbeitet the trained either as a groove or tube Cytopharyngealapparat. The Cytopharyngealapparat and the core are supported by a variety of non- microtubular fibers.

Way of life

The species are found in anaerobic freshwater free-living as commensals in the intestines of animals ( Hexamita, Trepomonas ) or as parasites of vertebrates and invertebrates ( Giardia, Octomitus, Spironucleus ). Pathogenic forms cause blood diarrhea in their hosts.

System

The Diplomonadida be divided into two sub-groups, and the Hexamitinae Giardiinae. The long as the original group respected within the Diplomonadida Enteromonadida are now incorporated into the Hexamitinae.

• Hexamitinae Kent, 1880, emend. Brugerolle et al. 1975 Hexamita
• Spironucleus
• Trepomonas
• Enteromonas
• Trimitus

• Giardiinae Kulda and Nohynkova, 1978 Giardia
• Octomitus

Documents

• Klaus Hausmann, Norbert Hülsmann, Renate Radek: Protistology, 3rd edition, Schweizerbart, 2003, p 47, ISBN 3-510-65208-8

Evidence

Footnotes directly after a statement prove the single statement, footnotes directly after a punctuation mark the entire preceding sentence. Footnotes behind a vacancy refer to the entire preceding paragraph.

• Fornicata
• Fornicaten