Magnetic compass orientation
The role of extraocular photoreceptors in newt magnetic compass orientation: parallels between light dependent magnetoreception and polarized light detection in vertebrates
... newt’s magnetic compass response ...newt’s magnetic compass, the similarity in the spectral dependence of these two responses is ...shoreward magnetic compass orientation ...
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Magnetic compass orientation in two strictly subterranean rodents: learned or species specific innate directional preference?
... The behavioural test designed to assess magnetic compass orientation in mole-rats has been described in detail previously (Burda et al., 1990). Briefly, individual silvery mole-rats or pairs of the ...
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Magnetic compass orientation in the blind mole rat Spalax ehrenbergi
... With regard to the toilet site, the mole rats did not show any magnetic compass orientation preference under either natural or altered magnetic fields. Careful examination of the pattern of ...
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Sanderlings (Calidris alba) have a magnetic compass: orientation experiments during spring migration in Iceland
... the orientation system of migratory birds has produced an impressive amount of information concerning which directional references migrants are able to use during their journeys between breeding and wintering ...a ...
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Magnetic compass orientation in European robins is dependent on both wavelength and intensity of light
... the magnetic compass in ...a magnetic inclination compass by showing axial rather than polar characteristics and by being insensitive to changes in magnetic intensity smaller than 10% ...
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Ontogenetic development of magnetic compass orientation in domestic chickens (Gallus gallus)
... The magnetic compass could be very useful during this phase: the young chicks could record the compass direction in which they move away from the hen and reverse it to return to ...axial ...
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Zebra finches have a light dependent magnetic compass similar to migratory birds
... for magnetic compass reception (reviewed by Wiltschko et ...trained magnetic compass direction, but shifted their orientation by ∼ 90 deg when tested under longer wavelengths (Phillips ...
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The case for light dependent magnetic orientation in animals
... the magnetic field due to variation in intensity encountered during long- distance migration, they may have more complex rules for determining magnetic compass ...of magnetic field intensity ...
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Behavioural evidence for the use of magnetic material in magnetoreception by a migratory bird
... ambient magnetic field elicit physiological, cellular and behavioural responses in animals, the biophysical mechanism of magnetic sensory perception is not ...and magnetic particles (magnetite) ...
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Migratory blackcaps tested in Emlen funnels can orient at 85 degrees but not at 88 degrees magnetic inclination
... for magnetic compass orientation under laboratory conditions in Emlen funnels is also important, because ‘vertical’ fields have often been used in earlier studies whenever a magnetic condition ...
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Spontaneous magnetic orientation in larval Drosophila shares properties with learned magnetic compass responses in adult flies and mice
... learned magnetic compass responses in both adult fruit flies and adult mealworm beetles appear to be mediated by a light- dependent mechanism (reviewed by Phillips et ...unimodal magnetic ...
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Light-dependent magnetoreception in birds: increasing intensity of monochromatic light changes the nature of the response
... the magnetic compass orientation as the intensity of the monochromatic light ...from compass orientation to an axial response along the east-west axis increased with increasing ...
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Sun compass orientation in homing pigeons: compensation for different rates of change in azimuth?
... sun compass of homing pigeons, a northern hemisphere species, works just as well in the southern hemisphere, even though the sun follows a counterclockwise rather than a clockwise course ...
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Magnetic orientation of spiny lobsters in the ocean: experiments with undersea coil systems
... underlying magnetic field detection have not been clearly established in any multicellular ...the magnetic sense (Kirschvink and Gould, 1981; Kirschvink, 1982, ...1989). Magnetic material (possibly ...
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Sun compass orientation helps coral reef fish larvae return to their natal reef
... sun compass guided swimming response is likely to continue until the larvae recognize the odor halo and/ or sound of their natal reef, which present a much larger homing target for returning larvae than the reef ...
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Homing of Single Pigeons Analysis of Tracks
... The pigeons were released from new release points and on many of the tracks followed a definite sequence of orientation methods: the birds began flying in the same compass direction that[r] ...
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Compassandorienteering.doc
... T he principles are much the same as in lesson 1 but this time, you are using the map to tell you which way is correct instead of your intuition. T ake a map. In our first example, we look at a map made for orienteering, ...
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Orientation of lizards in a Morris water maze: roles of the sun compass and the parietal eye
... Instead of circular, as was the water maze proposed by Morris (Morris, 1984), the present testing apparatus (Fig. 1A) was a hexagonal maze (diagonal 182 cm, apothem 77 cm, side walls 93 cm long and 40 cm high) made of ...
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1 Marine chart methods
... or magnetic bearing (M), depending whether true north (TN), grid north (GN) or magnetic north (MN) is ...and magnetic north vary from place to ...and magnetic north is called the declination ...
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A behavioral perspective on the biophysics of the light dependent magnetic compass: a link between directional and spatial perception?
... of magnetic nuclei aligned along multiple axes ...receive magnetic input, perhaps defined by the projected image of the pattern from a specific location ...
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