A further proof of polarization vision ofNotonecta glauca and a note on threshold intensity for eliciting the plunge reaction |
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| Authors: | R Schwind |
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| Institution: | (1) Zoology Institute, University of Regensburg, D-8400 Regensburg, (Federal Republic of Germany) |
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| Abstract: | Summary Polarized UV light from a platform on the ground can attract backswimmers and elicit plunge reactions. Threshold intensity is independent of the overall UV-intensity in the surrounding space. Unpolarized UV light attracts the animals only when the intensity is higher than that of the surroundings. These results show that polarized UV light can be discriminated from unpolarized UV light independently of intensity. |
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| Keywords: | Polarization vision water insect visual orientation UV vision |
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