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Paradermamoeba

The amoeba resembles an elongate Thecamoeba during locomotion, the shape has been described as lancet (Smirnov & Goodkov, 1994).  No pseudopod are formed but the leading edge expands smoothly.  A floating form exists that takes a radiant shape with bluntish pseudopods (compared) with Vannella, for example.  At  E.M. level, the two species named to date are characterised by a striking glycostyle arrangment.  No crystalline inclusions in either species. Each glycostyle has a helical region that packs tightly against neighbouring glycostyles to give a snake skin-like appearance under E.M. 

 

Paradermamoeba at the Protist Image site

 

Described species;-
P. levis (Smirnov & Goodkov, 1994)
P. valona (Smirnov & Goodkov, 1994) Length 51-107mm, breadth 16-30mm No cysts.  
References:-

Smirnov, A.V. & Goodkov, A.V. (1993). "Paraderamoeba valona gen. n., sp.n. (Gymnamoeba, Thecamoebidae) - a freshwater amoeba from the bottom sediments." Zoo. Zh. 72, 5-11. (in Russian)

Smirnov, A.V. & Goodkov, A.V. (1994). "Freshwater gymnamoebae with a new type of surface structure Paraderamoeba valona and P. levis sp. n. (Thecamoebidae), and notes on the diagnosis of the family." Acta Protozool. 33, 109-115.

 
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