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. 1995 Feb;110(2):167-70.
doi: 10.1016/0300-9629(94)00125-d.

Induction of the thigmotaxis in Paramecium caudatum

K Iwatsuki  1 , T Hirano
Affiliations

Induction of the thigmotaxis in Paramecium caudatum

K Iwatsuki et al. Comp Biochem Physiol A Physiol. 1995 Feb.

Abstract

Induction of thigmotaxis in Paramecium caudatum was examined. We succeeded in the induction by changing the ionic concentration and the Ja-value ([K+]/[Ca2+]1/2) of the surrounding medium. P. caudatum showed thigmotaxis stably in the solution containing a relatively high ionic concentration but a lower Ja-value. We found that the Paramecium cell touched the object with the tip of its oral groove and the cilia touching the object scarcely beat when the organism showed thigmotaxis.

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