Khawkinea
| Khawkinea | ||||||||||||
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| Scientific name | ||||||||||||
| Khawkinea | ||||||||||||
| Jahn & McKibben , 1937 |
The unicellular khawkinea are a freshwater living and widespread genus from the Euglenozoa group . They are close to the genus Euglena , but do not live by photosynthesis like this .
features
Khawkinea resemble the Euglena in almost all characteristics . They are spindle-shaped or elongated in shape and round and malleable in cross-section. They have a scourge serving for movement , which attaches almost at the end. At this point the cell is slightly swollen and there is an eye spot . A digestive system is missing.
It is believed that the genus emerged from the Euglena through loss of chloroplasts .
Way of life
Khawkinea live in fresh water and are widespread. They are all osmotrophic , mostly free-living, but some species live as parasites in freshwater animals such as flatworms , copepods and ringworms .
Systematics
The genus was first described in 1937 by Theodore Louis Jahn and Wendell R. McKibben , the name honors the Russian-British Waldemar Haffkine . The Khawkinea comprise around 10 species, including
- Khawkinea quartana ( type species )
- Khawkinea fritschii
- Khawkinea acutecaudata
- Khawkinea ocellata
- Khawkinea pertyi
proof
- Gordon F. Leedale: Order Euglenida In: John J. Lee, GF Leedale, P. Bradbury (Eds.): An Illustrated Guide to the Protozoa . tape 2 . Allen, Lawrence 2000, ISBN 1-891276-23-9 .