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Vampyrellidium

Page updated 2/4/02

Not to be confused with another cell wall degrading genus VampyrellaVampyrellidium has some ultrastructural similarity to Nuclearia as well as sharing a relativily simple life history (Patterson et al, 1987). The genus is also similar in feeding habit to the Vampyrellid amoeba described by Old & Darbyshire (Old & Darbyshire, 1978). Mitochondria are similar to Nuclearia and both have golgi surrounding the nucleus and a filamentous surface coat.  The most remarkable feature of both  Vampyrellidium and Nuclearia is a perinuclear striated band associated with microtubules! However, Vampyrellidium is similar to Vampyrella and differs from Nuclearia in that it feeds on algae by penetration. A large Vampyrellid amoeba (100um in length), has been found to be relatively common in waters around mangrove in Florida, US. (Rogerson & Gwaltney, 2000).

The phylogenetic position of the group is uncertain.

Vampyrellidium perforans

Isolated first from Loughrigg Tarn, Lake District, England. April 1977 (Patterson et al, 1987).

Vampyrellidium vagans

The original member of the genus described by Zopf (Zopf, 1885)

References

Patterson, D.J., Surek, B., & Melkonian, M. (1987). "The ultrastructure of Vampyrellidium perforans Surek & Melkonian and its taxonomic position among the naked filose amoebae. J.Protozool. 34(1): 63-67.

Old, K.M. & Darbyshire, J.F. (1978). "Soil fungi as food for giant amoebae". Soil.Biol. Biochem. 10: 93-100.

Rogerson, A. & Gwaltney, C. (2000). "High numbers of naked amoebae in the planktonic waters of a mangrove stand in Southern Florida." J.Euk.Microbiol. 47(3): 235-241.

Surek, B. & Melkonian, M. (1980). "The filose amoeba Vampyrellidium perforans nov.sp. (Vampyrellidae, Aconchulinida): Axenic culture, feeding behaviour and host range specifity." Arch. Protistenk. 123: 166-191.

Zopf, W. (1885). "Die pilzthiere oder Schleimpilze". In Schenk, A. Handbuch der Botanik Trewendt, Breslau 3(2): 1-174.

 
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