Cryptomonas paramaecium
| Cryptomonas paramaecium | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Division: | Cryptophyta |
| Class: | Cryptophyceae |
| Order: | Cryptomonadales |
| Family: | Cryptomonadaceae |
| Genus: | Cryptomonas |
| Species: | C. paramaecium |
| Binomial name | |
| Cryptomonas paramaecium (Ehrenberg) Hoef-Emden & Melkonian 2003 | |
Cryptomonas paramaecium is a species of colorless cryptomonad alga. Previously it was considered the type species of the genus Chilomonas (as Chilomonas paramaecium Ehrenberg 1831).[1]
Dimensions
Cell size values vary depending on the source: 14–28 µm long × 10–13 µm wide × 8–10 µm thick;[2] or 20–40 µm long and 10–20 µm in diameter.[3]
Description
It has a campylomorph shape,[2] with an ovate-elongated sigmoid cell, and a simple furrow without a stoma.[3] It lacks chloroplasts, instead possessing two leucoplasts (which are pigment-free, hence their transparency). It lacks pyrenoids but does contain several starch grains. The contractile vacuole is located in the anterior region of the cell.[4] The flagella are of type IV, where the long flagellum has a single row of mastigonemes with a single terminal filament, and the short flagellum also has a single row of mastigonemes, but each mastigoneme has two unequal terminal filaments.[5]
References
- ↑ AlgaeBase (2020). "Chilomonas paramaecium Ehrenberg 1831".
- 1 2 Hoef-Emden, Kerstin; Melkonian, Michael (2003-10-01). "Revision of the Genus Cryptomonas (Cryptophyceae): a Combination of Molecular Phylogeny and Morphology Provides Insights into a Long-Hidden Dimorphism". Protist. 154 (3): 371–409. doi:10.1078/143446103322454130. ISSN 1434-4610.
- 1 2 "Cryptomonads", Freshwater Algae of North America, Academic Press, pp. 809–850, 2015-01-01, doi:10.1016/B978-0-12-385876-4.00018-9, retrieved 2026-05-06
- ↑ Kreutz, Martin (2021). "Cryptomonas paramaecium – Real Micro Life". Retrieved 2026-05-06.
- ↑ Kugrens, Paul; Lee, Robert E.; Andersen, Robert A. (1987). "ULTRASTRUCTURAL VARIATIONS IN CRYPTOMONAD FLAGELLA 1". Journal of Phycology. 23 (4): 511–518. doi:10.1111/j.1529-8817.1987.tb04199.x. ISSN 0022-3646.