Biology:Chlorangiella
| Chlorangiella | |
|---|---|
Scientific classification 
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| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Chlamydomonadales |
| Family: | Chlorangiellaceae |
| Genus: | Chlorangiella De Toni[1] |
| Species | |
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Chlorangiella is a genus of microscopic algae, the type genus of the family Chlorangiellaceae.[1] The name Chlorangiella was coined by Giovanni Battista de Toni in 1889.[1] It is a nomen novum for Chlorangium F.Stein.[1]
Species of Chlorangiella are attached via stalks to freshwater algae, crustaceans, rotifers, or insect larvae.[2] They can attach to the substrate, such as the copepod Cyclops, in such large quantities as to make them appear green.[3] They have been recorded from many continents, mostly in temperate habitats.[1]
Description
Chlorangiella consists of single cells or groups of cells, where the cells are borne on the ends of mucilaginous stalks. Stalks may be branched or unbranched and up to 5 times the lengths of the cells. The cells themselves are ovoid, 5–42 μm long. They contain a single cell nucleus (i.e. are uninucleate) and contractile vacuoles at their apices. Chloroplasts are one to several, parietal and band-shaped, with or without a pyrenoid.[1]
Asexual reproduction occurs by the formation of zoospores. The zoospores may be released at the apex of the sporangium, and swim until they settle and develop into a new organism; alternatively, they may attach at the base of the sporangium and develop a stalk. Sexual reproduction has not been observed in this genus.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Guiry, M.D.; Guiry, G.M. (2008). "Chlorangiellaceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=45043.
- ↑ Shubert, Elliot; Gärtner, Georg (2014). "Chapter 7. Nonmotile Coccoid and Colonial Green Algae". Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc.. ISBN 978-0-12-385876-4.
- ↑ Péterfi, Leontin Stefan; Momeu, Laura (1987). "Observations on the Ultrastructural cytology of Chlorangiella subarctica(Skuja) Fott (Tetrasporales, Chlorophyceae)". Archiv für Protistenkunde 134: 125–135. doi:10.1016/S0003-9365(87)80032-5.
Wikidata ☰ Q26226384 entry
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