Vannellidae

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Vannellidae
Scientific classification
Domain: Eukaryota
Phylum: Amoebozoa
Subphylum: Lobosa
Class: Flabellinea
Order: Vannellida
Family: Vannellidae
Bovee 1970
Genera

Clydonella
Discamoeba
Lingulamoeba
Pessonella
Platyamoeba
Unda
Vannella

The Vannellidae are a family of Amoebozoa, which are found in freshwater, soil, and salt water.[1][2] The most common genus is Vannella.

Description[edit]

Vannellidae tend to be flattened and fan-shaped during motion, although some are long and narrow, and have a prominent clear margin at the anterior.[3] In most amoebae, the endoplasm glides forward through the center of the cell, but vannellids undergo a sort of rolling motion with the outer membrane sliding around like a tank tread. These amoebae are usually 10-40 μm in size, but some are smaller or larger.

Vannellidae are surrounded by an outer covering called the glycocalyx, which is generally 10-20 nm across, though the thickness varies among species. In some species, a layer of hair-like filaments called glycostyles protrudes from the glycocalyx.[2]

Taxonomy[edit]

Molecular phylogenies include them in the class Flabellinea as a sister group to the others, which have subpseudopodia.


References[edit]

  1. ^ Moselio Schaechter, ed. (2011). "Protists". Eukaryotic Microbes. Academic Press. p. 202. ISBN 9780123838773. 
  2. ^ a b Smirnov AV, Nassonova ES, Chao E, Cavalier-Smith T (July 2007). "Phylogeny, evolution, and taxonomy of vannellid amoebae". Protist. 158 (3): 295–324. doi:10.1016/j.protis.2007.04.004. PMID 17602867. 
  3. ^ "Family Vannellidae Bovee, 1970". Microworld. Retrieved 4 July 2016.