Pompholyxophrys (pom-folly-zoff-riss) punicea. The cytoplasm of the spherical body is colorless or reddish, often interspersed with colored granules and green or brown food particles. The outer periplast is built up from conspicuous minute colourless spherical granules (perles) arranged in concentric layers. The granules are glass like hollow spheres and arranged in concentric layers to form a compact envelope. The large nucleus is located eccentricly. The straight and pointed pseudopodia are tenuous and indistinct. Individuals are found occasionally in ponds and swamps. This specimen was collected in a bog pond near Konstanz, Germany. The outer sphere of colourless spherical perles can be seen to be lying in concentric layers. Differential interference contrast. This picture was taken by Martin Kreutz using an Olympus microscope. Image copyright: Martin Kreutz, image used under license to MBL (micro*scope).
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From the collection
Freshwater ponds of Konstanz (Germany)
|Description of Pompholyxophrys punicea: Pompholyxophrys is a filose amoeba, with pseudopodia which resemble the axopodia of the heliozoea but lack the microtubles possessed by the latter. P. punicea is surrounded by a layer of spherical hollow siliceous elements, penetrated by characteristic hexagonal pores (seen by electron microscopy only). Members of the genus are predominantly algal feeders. Six species are known: all inhabit freshwater and are distributed world-wide. Variable in size, 15-65 microns, often orange. |