Abstract
Light induces two contrasting behavioral responses in crayfish: attraction at low intensities and withdrawal at high intensities. The aim of our experiments has been to study whether screening pigments of the eye influence the selection of attraction or withdrawal responses. During illumination, screening pigments mask photoreceptor cells, reducing the gain of the visual system. Comparison of the time and light-intensity functions of pigment migration and of attraction and withdrawal responses suggest that pigment migration might influence the selection as well as the latency of the response.
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Fernández-de-Miguel, F., Aréchiga, H. Behavioral selection in crayfish correlates with movement of a screening pigment in the eye. Experientia 48, 1158–1161 (1992). https://doi.org/10.1007/BF01948014
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DOI: https://doi.org/10.1007/BF01948014