Vampyrellidae

Vampyrellidae
"Vampyrella lateritia"
Vampyrella lateritia
Scientific classification
Clade: SAR
Phylum: Cercozoa
Class: Proteomyxidea
Order: Aconchulinida
Family: Vampyrellidae
Zopf, 1885
Genus

The family Vampyrellidae is a subgroup of the order Aconchulinida (formerly Vampyrellida) within the phylum Cercozoa.[1][2] Based on molecular sequence data, the family currently comprises the genus Vampyrella, and maybe several other vampyrellid amoebae (e.g. Gobiella).[2] The cells are naked and characterised by radiating, filose pseudopodia (also referred to as filopodia) and an orange colouration of the main cell body.[3][4]

In former times the family Vampyrellidae contained several genera (e.g. Vampyrella, Gobiella, Leptophrys, Platyreta, Theratromyxa) and was identical with the order Vampyrellida West, 1901, also known under the name "Aconchulinida".[5] However, based on molecular sequence data it seemed reasonable to restrict the family Vampyrellidae to a subgroup (containing the genus Vampyrella) and to establish another family for the genera Leptophrys, Platyreta and Theratromyxa, namely the Leptophryidae Hess et al., 2012.[2]

Characteristics

Vampyrella and Spirogyra

When free-floating, the cell is spherical and around 30 μm across, with long radially directed filose pseudopods as well as distinctive shorter club-shaped ones, so that it resembles a heliozoan. Moving, the cell stretches out and takes a more typical amoeboid form, with an obvious distinction between the clear periphery and pseudopods and the greenish interior. In this form it finds its way into algae cells and feeds on their interiors. A few other vampyrellids are parasitic on fungi. As such, these vampyrellids can be an important control of parasitic rust fungus of wheat and other crops.

Vampyrellids characteristically have mitochondria with tubular cristae. Together with the nucleariids they include the majority of the naked filose amoebae.

References

  1. ↑ "Vampyrellidae". Retrieved 2009-03-08.
  2. 1 2 3 Hess, Sebastian; Sausen, Nicole; Melkonian, Michael (2012-02-15). "Shedding Light on Vampires: The Phylogeny of Vampyrellid Amoebae Revisited". PLOS ONE. 7 (2): e31165. Bibcode:2012PLoSO...731165H. doi:10.1371/journal.pone.0031165. ISSN 1932-6203. PMC 3280292. PMID 22355342.
  3. ↑ Cienkowski, L. (1865-12-01). "Beiträge zur Kenntniss der Monaden". Archiv für Mikroskopische Anatomie (in German). 1 (1): 203–232. doi:10.1007/BF02961414. ISSN 0176-7364. S2CID 84323025.
  4. ↑ Zopf, Wilhelm (1885). Die Pilzthiere oder Schleimpilze. Breslau: Trewendt.
  5. ↑ David Bass; Ema E.-Y. Chao; Sergey Nikolaev; Akinori Yabuki; Ken-ichiro Ishida; Cédric Berney; Ursula Pakzad; Claudia Wylezich & Thomas Cavalier-Smith (2009). "Phylogeny of novel naked filose and reticulose Cercozoa: Granofilosea cl. n. and Proteomyxidea revised". Protist. 160 (1): 75–109. doi:10.1016/j.protis.2008.07.002. PMID 18952499.
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