Biology:Chaetopeltis
Chaetopeltis is a genus of green algae in the order Chaetopeltidales,[1] containing a single species, Chaetopeltis orbicularis.[2] It is an epiphyte on aquatic plants and filamentous algae. It is a freshwater organism,[3] preferring flowing water;[2] it is generally common but often overlooked.[4]
Chaetopeltis is unicellular when young but later grows into a flattened, disc-shaped colony of cells up to 1 mm in diameter and one cell thick. The cells are 15–20 μm wide and 15–30 μm long, with rounded or angular by mutual compression; cells may have one or two long pseudocilia attached, oriented perpendicularly to the disc. The chloroplast is parietal and contains a pyrenoid. Cells contain [3]
Asexual reproduction occurs by the formation of two to eight zoospores, which are quadriflagellate; sexual reproduction has also been observed and it is isogamous.[3]
Chaetopeltis is usually similar in morphology to Coleochaete, but that genus lacks contractile vacuoles and has basally sheathed setae.[3] It is variable in morphology, and single-celled individuals have been described under different names, namely Oligochaetophora and Polychaetophora.[4]
References
- ↑ See the NCBI webpage on Chaetopeltis. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. https://ftp.ncbi.nih.gov/pub/taxonomy/.
- ↑ 2.0 2.1 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.
- ↑ 3.0 3.1 3.2 3.3 The freshwater algal flora of the British Isles: an identification guide to freshwater and terrestrial algae. Cambridge University Press. 2002. ISBN 978-0-521-77051-4.
- ↑ 4.0 4.1 Wujek, Daniel E.; Thompson, Rufus H. (1999). "The Algal Genera Chaetopeltis, Oligochaetophora, and Polychaetophora (Chaetopeltidales, Chlorophyta)". Transactions of the Kansas Academy of Science 102 (1/2): 40–46. doi:10.2307/3628214.
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