Abstract
Investigations carried out under natural conditions suggest that Nerita plicata Linné is capable of orientating to the sun. Behaviour is predominatly photonegative during the morning, and photopositive during the afternoon. Accuracy of orientation improves as the brightness of the sun increases. At Watamu (Kenya), snails tended to orientate away from the sea at all times of the day. Orientatory performance is not affected by the temporal proximity of high or low water, and locomotory speeds seem to be unaffected by the strength of the sun, the time of day, or the state of the tide.
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Communicated by J. H. S. Blaxter, Oban
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Warburton, K. Solar orientation in the snail Nerita plicata (Prosobranchia: Neritacea) on a beach near Watamu, Kenya. Mar. Biol. 23, 93–100 (1973). https://doi.org/10.1007/BF00389165
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DOI: https://doi.org/10.1007/BF00389165