world of amoeboid organisms

Dactylosphaerium polypodium
Dactylosphaerium polypodium, 56 µm broad

 

Genus Dactylosphaerium Hertwig & Lesser, 1874

Diagnosis: Shape of locomotive form variable, but cells usually ovoidal with numerous tapering subpseudopodia. Most of these are conical and extend from the hyaline edge, but they can also radiate out from surface of cell. Single spherical nucleus. Granular cytoplasm without cytoplasmic crystals. No posterior uroid. Cell very slow moving.
Type species: Dactylosphaerium polypodium Schultze, 1854.

Ecology: Reported from both freshwater and marine muddy sediments. Presumably feeds on algae since the cytoplasm of the type species contained yellow/green/brown bodies thought to represent partly digested food particles.

 

Dactylosphaerium polypodium
Dactylosphaerium polypodium, 50 µm – Island of Schiermonnikoog, brackish water, the Netherlands.
Dactylosphaerium polypodium
Dactylosphaerium polypodium
Dactylosphaerium polypodium, body 42 µm and 55 µm.
Dactylosphaerium polypodium
Dactylosphaerium polypodium
Dactylosphaerium polypodium
Dactylosphaerium polypodium
Ferry Siemensma, created March 2, 2019; last modified February 12, 2021
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