Biology:Ankyra
| Ankyra | |
|---|---|
Scientific classification 
| |
| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Sphaeropleales |
| Family: | Sphaeropleaceae |
| Genus: | Ankyra Fott, 1957 |
| Type species | |
| Ankyra ancora | |
| Species[1] | |
| |
Ankyra is a genus of green algae in the family Characiaceae.[1] This genus of algae is closely related to Atractomorpha and Sphaeroplea.[2] They are found in stagnant waters.[3]
Ankyra consists of single cells that are planktonic or epiphytic. Cells are spindle-shaped or cylindrical with the ends tapering into long spines. At one end, the spine is bifid and/or enlarged into a spatula-like appendage. The cell wall consists of two pieces that are joined together at the middle of the cell. One band-shaped chloroplast lines the inside of the cell membrane, and contains a single pyrenoid.[4]
Reproduction occurs via zoospores which are released when the two halves of the cell wall break apart, or through a hole formed in the cell wall. Sexual reproduction has not been observed in Ankyra.[5] However, various aplanospore-like stages and other resting stages have been observed in Ankyra, and need to be studied further.[3]
Species are identified based on the shape of the cells and their appendages.[5]
References
- ↑ 1.0 1.1 Guiry, M.D.; Guiry, G.M. (2007). "Genus: Ankyra taxonomy browser". AlgaeBase version 4.2 World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=7004. Retrieved 2007-09-25.
- ↑ "Phylogeny of the Chlorophyceae with special reference to the Sphaeropleales: a study of 18S and 26S rDNA data.". Journal of Phycology 37 (5): 819–835. 2001. doi:10.1046/j.1529-8817.2001.00162.x. Bibcode: 2001JPcgy..37..819B.
- ↑ 3.0 3.1 Krienitz, Lothar; Bock, Christina (2012). "Present state of the systematics of planktonic coccoid green algae of inland waters". Hydrobiologia 698: 295–326. doi:10.1007/s10750-012-1079-z.
- ↑ Bicudo, Carlos E. M.; Menezes, Mariângela (2006). Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições (2 ed.). RiMa Editora. pp. 508. ISBN 857656064X.
- ↑ 5.0 5.1 Guiry, M.D.; Guiry, G.M. (2008). "Ankyra". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=43378.
Further reading
- "About Ankyra-Lanceolata (Korsikov) Fott (Chlorophyta, Chlorococcales)". Archiv für Hydrobiologie 75-80, Suppl. 86. 1990.
Wikidata ☰ Q4766124 entry
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