Francisco J. Diego-Rasilla, Rosa M. Luengo, John B. Phillips Journal of Comparative Physiology. We provide evidence for the use of a magnetic compass for y-axis orientation (i.e., orientation along the shore-deep water axis) by tadpoles of the European common frog (Rana temporaria). Furthermore, our study provides evidence for a wavelength-dependent effect of light on magnetic compass orientation in amphibians. Leer más.