Ref ID : 2362

Marie-Madeleine Couteaux and C.Y. Jeanson; [Essai D'analyse Elementaire de la Theque de Trigonopyxis arcula (Leidy) Penard (Rhizopoda, Testacea)] (Elemental analyses of the thecae of Trigonopyxis arcula (Leidy) Penard (Rhizopoda, Testacea). Soil Organisms as Components of Ecosystems Ecol.Bull. 25:164-172, 1977

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The shells of T. arcula were analysed qualitatively using the probe of a scanning electron microscope and Castaing's microprobe analyser. The elements Al, Si, K, Ca, Fe, Ti, Cl, S and Mg were detected at several points, and along the diameter. The respective densities are illustrated by distribution maps (X-ray pictures). These analyses do not disturb the structure of the shells. The results are compared to those of Nebela tincta, Euglypha sp., Phryganella acropodia and Centropyxis aerophila.