Heteronema trispira

Heteronema trispira
Scientific classification
Domain:	Eukaryota
Clade:	Discoba
Phylum:	Euglenozoa
Class:	Euglenida
Genus:	Heteronema
Species:	H. trispira
Binomial name
Heteronema trispira Matvienko, 1938

Heteronema trispira is a spirally twisted flagellated euglenoid from the genus Heteronema first described by Olexandra Matvienko in 1938. ^{[1] [2]}

Description

Heteronema trispira has a spindle-shaped body up to 130 μm long, twisted into a spiral with three characteristic counterclockwise turns. It has a central nucleus, two long flagella and an apparently smooth periplast that tapers to a "snout-like" extension. The cell is filled with very small paramylon grains. ^[2]

One specimen was described as containing phagocytosed algae. ^[2]

Habitat and range

H. trispira is rare, ^{[3] : 5} known only from a few isolated observations since 1938. ^[2] Observations have been recorded from wetlands in Ukraine, ^{[1] [4]} Bulgaria ^[5] and Germany. ^[2] One cell was recorded from a freshwater lake in Florida. ^{[3] : 17}

References

1. Matvienko, A.M. (1938). Materyiali do vivcheniya vodorostej URSR. I. [Contribution to the study of the algae of the UKR. SSR. I. Algae of the Sphagnum-Swamp "Klukvennoye"] (in Ukrainian). Uchen. Zap. Kharkyiv. derzh. Unyiv. 14: 29–78.
2. Kreutz, Martin (2021). "Heteronema trispira (Matvienko, 1938)". Real Micro Life. Retrieved 13 November 2023.
3. Lackey, James; Phelps, Earle; Lackey, Elsie (1 January 1967). A Partial Checklist of Florida Fresh-Water Algae and Protozoa with Reference to McCloud and Cue Lakes (PDF). Water Resources Research Center.
4. Barinova, S.S.; Belous, E.P.; Tsarenko, P.M. (2019). [Algoindication of water bodies in Ukraine: methods and prospects] (in Russian). Haifa: University of Haifa Publisher.
5. Michev, T. (1998). Biodiversity of the Srebarna Biosphere Reserve: Checklist and Bibliography. Ministry of Environment and Waters. ISBN   9789546420480.