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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 2197

Frederick C. Page; A comparative study of five fresh-water and marine species of thecamoebidae. Trans.Amer.Micros.Soc. 90(2):157-173, 1971

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Thecamoeba sphaeronucleolus and T. striata were isolated from fresh water; T. hilla, T. orbis, and a strain described as Platyamoeba mainensis n. sp., from salt-water habitats on the Maine coast. Smaller amoebae were used along with bacteria as food organisms for both fresh-water species. The mitotic patterns of T. sphaeronucleolus, T. striata, and T. hilla are similar to each other. The mitotic pattern of T. orbis differs from that of other species of Thecamoeba but resembles that of fresh-water species of Platyamoeba and many other free-living amoebae. The division pattern of P. mainensis appears intermediate between those of fresh-water species of Platyamoeba and the three larger species of Thecamoeba investigated. The salt-water Thecamoebidae show a high degree of euryhalinity.