...Lewis C. Naisbett-Jones; Nathan F. Putman; Michelle M. Scanlan; David L. G. Noakes; Kenneth J. Lohmann ABSTRACT A variety of animals sense Earth's magnetic field and use it to guide movements over a wide range of spatial scales. Little is known, however, about the mechanisms that underlie magnetic...

...Michael J. Baltzley; Matthew W. Nabity ABSTRACT While mounting evidence indicates that a phylogenetically diverse group of animals detect Earth-strength magnetic fields, a magnetoreceptor has not been identified in any animal. One possible reason that identifying a magnetoreceptor has proven...

... newts use the light-dependent magnetic compass to align a magnetite-based `map detector'when obtaining the precise measurements necessary to derive map information from the magnetic field. However, aligning the putative map detector does not explain the fixed-axis response of newts tested under long...

...-polarized light and the magnetic field. Although the wavelength-dependence of the polarized light orientation in amphibians has not been studied, polarization sensitivity in fishes appears to be mediated by two antagonistic photoreception mechanisms that have similar spectral characteristics to those...

... that oriented them away from the centre of rotation. * Author for correspondence (e-mail: [email protected] ). 13 05 1997 ©The Company of Biologists Limited 1997 bird migration migratory orientation celestial rotation magnetic field ontogeny garden warbler...

... of coordinate system. Presumably, a displaced pigeon compares the values of some factor at the release site with its remembered value at the home loft. This factor might be olfactory, it might be some feature of the earth’s magnetic field or it might be something else. There is some evidence that pigeons may...

...Charles Walcott ABSTRACT Homing pigeons from our old lofts at Fox Ridge Farm in Lincoln, MA, were disoriented when released at places where the earth’s magnetic field was irregular - so-called ‘magnetic anomalies’. The orientation of pigeons raised in our lofts at Cornell in Ithaca, NY...

...Kenneth J. Lohmann; A. O. Dennis Willows; Robert B. Pinter ABSTRACT Diverse animals can orient using geomagnetic cues, but little is known about the neurophysiological mechanisms that underlie magnetic field detection. The marine mollusc Tritonia diomedea (Bergh) has a magnetic sense and its...