Differences in Flicker Fusion Frequencies of the Five Spectral Photoreceptor Types in the Swallowtail Buttertly's Compound Eye
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概要
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Intracellular recordings were used to measure flicker fusion frequencies (FFF's) as a function of light intensity (I) in the five types of spectral receptors (UV, violet, blue, green and red) in the compound eye of the butterfly, Papilio xuthus. FFF's in all receptor types increase with light intensities when stimulus I's are less than I_<50> (the I that generates 50% of the maximum response amplitude, Vmax, in the V-log I curve). FFF's in all receptor types are maximum at I's between approximately I_<50>+0. 5 and I_<50>+1 log unit. At stronger I's FFF's of blue and green receptors decrease gradually but remain above 80% of the maximum FFF's. But UV, violet and red receptors maintain nearly maximal FFF's at I's above I_<50>. Maximum FFF's of green (107Hz) and the blue (103Hz) receptors are significantly higher than those of UV(90Hz) and violet (82Hz) receptors.
- 1994-10-15
著者
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Eguchi Eisuke
Department Of Biology Yokohama City Universit
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Nakagawa Takanao
Department of Biology, Yokohama City University
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