Connecting the Navigational Clock to Sun Compass Input in Monarch Butterfly Brain
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چکیده
منابع مشابه
Connecting the Navigational Clock to Sun Compass Input in Monarch Butterfly Brain
Migratory monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate to their overwintering grounds in Mexico. Although polarized light is one of the celestial cues used for orientation, the spectral content (color) of that light has not been fully explored. We cloned the cDNAs of three visual pigment-encoding opsins (ultraviolet [UV], blue, and long wavelength) and f...
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Each fall, eastern North American monarch butterflies (Danaus plexippus) use a time-compensated sun compass to migrate to their overwintering grounds in central Mexico. The sun compass mechanism involves the neural integration of skylight cues with timing information from circadian clocks to maintain a constant heading. The neuronal substrates for the necessary interactions between compass neur...
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Migrating eastern North American monarch butterflies use a time-compensated sun compass to adjust their flight to the southwest direction. Although the antennal genetic circadian clock and the azimuth of the sun are instrumental for proper function of the compass, it is unclear how these signals are represented on a neuronal level and how they are integrated to produce flight control. To addres...
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Convincing evidence that migrant monarch butterflies (Danaus plexippus) use a magnetic compass to aid their fall migration has been lacking from the spectacular navigational capabilities of this species. Here we use flight simulator studies to show that migrants indeed possess an inclination magnetic compass to help direct their flight equatorward in the fall. The use of this inclination compas...
متن کاملNeural integration underlying a time - compensated sun compass in the migratory monarch butterfly Supplementary Material
This function resembles a potential, such that any point on the potential (particular choice of !!and !) will evolve to the minimum point. The function is nonnegative and thus has a minimum at 0, when !! = !!. Showing that the balanced state !!" is a unique fixed point, in the interval !! ∈ (135,315) for each !! ∈ ! [0,12], is equivalent to showing that the function ! vanishes on ! = !!" and po...
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ژورنال
عنوان ژورنال: Neuron
سال: 2005
ISSN: 0896-6273
DOI: 10.1016/j.neuron.2005.03.014