Neometanema

Neometanema
Scientific classification
Domain:	Eukaryota
Clade:	Discoba
Phylum:	Euglenozoa
Class:	Euglenida
Order:	Natomonadida
Suborder:	Metanemina Cavalier-Smith, 2016 [1]
Family:	Neometanemidae Cavalier-Smith, 2016
Genus:	Neometanema Lee & Simpson, 2014 [2]
Type species
Neometanema parovale Lee & Simpson, 2014

Neometanema is a genus of phagotrophic flagellates belonging to the Euglenida, a diverse group of flagellates in the phylum Euglenozoa. ^[2] It is the sole genus within the monotypic family Neometanemidae and suborder Metanemina. ^[1] It composes the order Natomonadida together with a closely related clade of osmotrophs known as Aphagea. ^[3]

Description

Neometanema is a genus of unicellular flagellates, microscopic eukaryotes or protists that swim by using two flagella that are equally long. The cells are flattened in shape, with a visible feeding apparatus. It is a euglenid, characterized by the presence of pellicle strips below the cell surface; in particular, Neometanema species have 22 pellicle strips arranged helically through the cell. Like other euglenids of the Spirocuta clade, Neometanema cells are capable of metaboly (flexible peristaltic movement), although more weakly than others. They are distinguished by the closely related genera Heteronema and Anisonema by their skidding motility that involves both flagella. ^[4]

References

1. Thomas Cavalier-Smith (15 September 2016). "Higher classification and phylogeny of Euglenozoa". European Journal of Protistology . 56: 250–276. doi:10.1016/J.EJOP.2016.09.003. ISSN   0932-4739. PMID   27889663. Wikidata   Q39151632.
2. Won Je Lee; Alastair G B Simpson (20 May 2014). "Ultrastructure and molecular phylogenetic position of Neometanema parovale sp. nov. (Neometanema gen. nov.), a Marine phagotrophic euglenid with skidding motility". Protist . 165 (4): 452–472. doi:10.1016/J.PROTIS.2014.05.001. ISSN   1434-4610. PMID   24945929. Wikidata   Q30832237.
3. G. Lax; M. Kolisko; Y. Eglit; et al. (June 2021). "Multigene phylogenetics of euglenids based on single-cell transcriptomics of diverse phagotrophs". Molecular Phylogenetics and Evolution . 159: 107088. doi:10.1016/J.YMPEV.2021.107088. ISSN   1055-7903. Wikidata   Q110667805.
4. Alexei Y. Kostygov; Anna Karnkowska; Jan Votýpka; Daria Tashyreva; Kacper Maciszewski; Vyacheslav Yurchenko; Julius Lukeš (10 March 2021). "Euglenozoa: taxonomy, diversity and ecology, symbioses and viruses". Open Biology . 11: 200407. doi:10.1098/RSOB.200407. ISSN   2046-2441. PMC   8061765 . PMID   33715388. Wikidata   Q125548575.