Encyclopedia of Life · EOL (see source)
Discosea
Discosea is a class of Amoebozoa, consisting of naked amoebae with a flattened, discoid body shape. Members of the group do not produce tubular or subcylindrical pseudopodia, like amoebae of the class Tubulinea. When a discosean is in motion, a transparent layer called hyaloplasm forms at the leading edge of the cell (see lamellipodium). In some discoseans, short "subpseudopodia" may be extended from this hyaloplasm, but the granular contents of the cell do not flow into these, as in true pseudopodia. Discosean amoebae lack hard shells, but some, like Cochliopodium and Korotnevella secrete int
Species
CLASS
- KingdomProtozoa
- PhylumAmoebozoa
- ClassDiscosea
Habitatmarine, brackish, freshwater
Discosea – gromada ameb należących do supergrupy Amoebozoa w klasyfikacji Cavaliera-Smitha[1]. Klasyfikacja Adla traktuje Discosea jako klad[2]. Należą tutaj następujące podgromady i rzędy według Cavalier-Smitha[1]: Podgromada Flabellinia Smirnov i inni, 2005 Rząd Dactylopodida Smirnov i inni, 2005 Rząd Vannellida Smirnov i inni, 2005 Rząd Himatismenida Page, 1987 Rząd Stygamoebida Smirnov i Cavalier-Smith, 2011 Rząd Pellitida Smirnov i Cavalier-Smith Rząd Trichosida Moebius, 1889 Podgromada Longamoebia Smirnov i Cavalier-Smith, 2011 Rząd Dermamoebida Cavalier-Smith, 2004 Rząd Thecamoebida Smirnov i Cavalier-Smith Rząd Centramoebida Rogerson i Patterson, 2002 przywrócony przez Cavalier-Smith, 2004 W klasyfikacji Adl'a wyróżniamy tylko 4 klady[2]: Flabellinia Smirnov i inni, 2005 Himatismenida Page, 1987 Stygamoebida Smirnov i inni 2011 Longamoebia Smirnov i Cavalier-Smith, 2011 Przypisy ↑ a b Alexey V. Smirnov, Ema Chao, Elena S. Nassonova, Thomas Cavalier-Smith. A Revised Classification of Naked Lobose Amoebae (Amoebozoa: Lobosa). „Protist”. 162, s. 545-570, 2011. ↑ a b Sina M. Adl, Alastair G. B. Simpson, Christopher E. Lane i inni. The Revised Classification of Eukaryotes. „J. E
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Discosea is a class of Amoebozoa, consisting of naked amoebae with a flattened, discoid body shape. Members of the group do not produce tubular or subcylindrical pseudopodia, like amoebae of the class Tubulinea. When a discosean is in motion, a transparent layer called hyaloplasm forms at the leading edge of the cell (see lamellipodium). In some discoseans, short "subpseudopodia" may be extended from this hyaloplasm, but the granular contents of the cell do not flow into these, as in true pseudopodia. Discosean amoebae lack hard shells, but some, like Cochliopodium and Korotnevella secrete intricate organic scales which may cover the upper (dorsal) surface of the cell. No species have flagella or flagellated stages of life.
The composition of Discosea is similar to that of the class Flabellinea, proposed by Alexey Smirnov and his collaborators in 2005. However, Discosea is a more comprehensive taxon, including several groups not included in Flabellinea. In 2011, Smirnov et al. accepted Discosea as a class, and reduced Flabellinea to the rank of a subclass with the name Flabellinia.