Stygiella | |
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Scientific classification | |
Domain: | Eukaryota |
Class: | Jakobea |
Order: | Jakobida |
Family: | Stygiellidae |
Genus: | Stygiella Pánek, Táborský & Čepička 2015.[1] |
Type species | |
Stygiella incarcerata (Bernard, Simpson and Patterson 2000) Pánek, Tábosky & Čepička 2015
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Species | |
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Stygiella /ˌstɪ.d͡ʒiˈɛ.lə/ is a genus of free-living marine flagellates belonging to the family Stygiellidae in the jakobids (excavata).[1]
The genus currently includes four species, all of which are secondary obligate anaerobes.[1] The species are all unicellular and crescent-shaped.[1][2] All members possess hydrogenosomes, a type of acristate mitochondrion-derived organelle (MRO) that produces hydrogen gas as a metabolic product.[1][3] Stygiella is a deep-branching lineage within excavates, and hydrogenosome genes sometimes show eubacterium-like mechanisms that have been useful for studying of the evolutionary history of eukaryotic mitochondria.[1][3]