Chroomonas

Chroomonas is a genus of algae from the class of Cryptophyceae.

Description

Chroomonas lives as an oval or at the rear end of tapered single-celled organisms with a blue-green to blue plastids and two unequal-length flagella. The flagella arise just below the often asymmetric cell front end of a throat opening. At the cell front end is often a contractile vacuole. The throat is explosive organelles, the so-called Ejektosomen, which can be seen in the light microscope as dark spots, lined. The plastid is H- or plate-shaped, often with a central Pyrenoid. The diet of Chroomonas is mixotrophically. Blue pigments of algae are used as fluorescent dyes in microscopy. The cells reach a size 9-16 microns.

Reproduction

Asexual reproduction occurs by longitudinal division, in which the polarity ( orientation) reverses the daughter cells.

Sexual reproduction is not known.

Types (selection)

• Chroomonas acuta
• Chroomonas diplococca
• Chroomonas falcata
• Chroomonas nordstedtii
• Chroomonas virescens

Dissemination

Croomonas lives primarily in temperate and cold waters, even under ice sheets and at greater depths.

Swell

• Karl -Heinz Linne von Berg, Kerstin Hoef -Emden, Birger Marin, Michael Melkonian: The Cosmos algae leader. The main freshwater algae under the microscope. Franckh Cosmos, 2006, ISBN 3-440-09719-6.