... attributed. Cryptochrome 1a Flavin cycle Photoreduction Activated Cry1a Radical pair mechanism Migratory orientation The Radical Pair Model ( Ritz et al., 2000 ) proposed that the avian magnetic compass is based on radical pair processes in the eye. Cryptochrome, a blue light receptor...

.... and Emlen, J. T. ( 1966 ). A technique for recording migratory orientation of captive birds. Auk 83 , 361 -367. Fleissner, G., Holtkamp-Rötzler, E., Hanzlik, M.,Winklhofer, M., Fleissner, G., Petersen, N. and Wiltschko, W. ( 2003 ). Ultrastructural analysis of a putative magnetoreceptor in the beak...

... distribution of skylight at sunset with the response of the light-dependent magnetic compass. References Able, K. P. ( 1982 ). Skylight polarization patterns at dusk influence migratory orientation in birds. Nature 299 , 550 -551. Able, K. P. ( 1993 ). Orientation cues used by migratory birds...

... were oriented in their migratory orientation after both types of pre-exposure. These findings suggest that the newly gained ability to orient under red light might be based on learning to interpret a novel pattern of activation of the magnetoreceptors and hence may represent a parallel...

... low-sensitive long-wavelength mechanism. * Author for correspondence (e-mail: [email protected] ) 17 9 2002 © The Company of Biologists Limited 2002 2002 migratory orientation magnetoreception magnetic compass European robin Erithacus rubecula...

... effect, whereas the ANTI treatment should cause remagnetization of the magnetite particles involved in a receptor and could produce a maximum change in that receptor's output for some receptor configurations. Migratory orientation was used as a criterion to assess the effect on the receptor. Before...

...-mail: [email protected] 9 7 2001 © The Company of Biologists Limited 2001 2001 magnetic compass magnetoreception radical-pair mechanism photopigment migratory orientation European robin Erithacus rubecula . A current hypothesis of avian magnetoreception proposes...

..., Australia 08 09 1998 10 11 1998 Copyright © 1998 The Company of Biologists Ltd. 1998 magnetite pulse magnetization bird migration migratory orientation magnetic compass navigational ‘map’ Zosterops l. lateralis silvereye With the demonstration of magnetic...

... 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...

... orientation system enables the birds to respond to spatial and temporal variability in the quality and availability of orientation information. ©The Company of Biologists Limited 1996 migratory orientation development Savannah sparrow Passerculus sandwichensis Among North American...