Ankistrodesm
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Ankistrodesmus falcatus |
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| Ankistrodesm | ||||||||||||
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Ankistrodesmus is a genus of colony-forming green algae from the class of Chlorophyceae .
features
The representatives have narrow, sickle or needle-shaped to somewhat screwy cells. 4 to 16 of these are combined to form loose colonies. Each cell has a single nucleus and a wall-mounted chloroplast . This fills the cell in its entire length and has no pyrenoid .
They reproduce asexually through the formation of daughter colonies, which consist of 4 to 16 cells and are released when the envelope of the mother cell is torn apart. The daughter colony is held together by a jelly. Sexual reproduction is unknown in Ankistrodesm .
Occurrence
Ankistrodesmus occurs in plankton mainly from nutrient-rich, stagnant water, but also in water basins and garden ponds. It is also found in the plankton of rivers.
Systematics
The genus Ankistrodesmus includes a few species. Algaebase names 15 recognized species.
supporting documents
- Karl-Heinz Linne von Berg, Michael Melkonian u. a .: The Kosmos algae guide. The most important freshwater algae under the microscope. Kosmos, Stuttgart 2004, ISBN 3-440-09719-6 , p. 168.
Individual evidence
- ↑ Ankistrodesmus on algaebase.org ( Memento of the original from June 6, 2019 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed March 20, 2011.
