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Journal of Experimental Biology 121,153-163 (1986)
Published by Company of Biologists 1986

Motion of Magnetotactic Microorganisms

DARCI MOTTA S. ESQUIVEL 1 and HENRIQUE G. P. LINS DE BARROS 1

1 Centro Brasileiro de Pesquisas Físicas, Rua Dr Xavier Sigaud, 150, Urca 22290, Rio de Janeiro, RJ, Brazil

Magnetic moments for different magnetotactic microorganisms are obtained by electron microscopic analyses and studies of cell motion by optical microscopy. The results are analysed in terms of a model due to C. Bean. The considerations presented suggest that magnetotaxis is an efficient mechanism for orientation only if the time for reorientation is smaller than the mean time of environmental perturbations.

Key words: magnetotaxis, microorganisms, magnetism, magnetic, behaviour

Accepted on September 16, 1985






© The Company of Biologists Ltd 1986