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Receptors in insect. 2. Electroretinogram of the compound eye in the Oriental fruit fly (Dacus dorsalis Hendel)


, : Receptors in insect. 2. Electroretinogram of the compound eye in the Oriental fruit fly (Dacus dorsalis Hendel). Bulletin of the Institute of Zoology Academia Sinica (Taipei): 281: 7-13

The changes of the electroretinograms (ERGs) of the compound eye in the Oriental fruit fly (Dacus dorsalis Hendel) were studied upon stimulating by different monochromatic lights and intensities. After a fly allowed to dark adaptation for 30 minutes, the 15 monochromatic flashing photic stimuli were given on the frontal region of the left compound eye at every 15 second intervals, and the ERGs were computed by 16 superimposed. These ERGs have a triphasic waveform designated as gamma, delta and epsilon in the order of their appearance on those graphic responses. In a spectral response curve, we can suspect that the frontal region of compound eye possessed the U-V (.lambda. max = 348 nm), Indigo (.lambda. max - 431 nm) and Blue-Green (.lambda. max = 494 nm) visual pigments.

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