Abstract
WHEN the larvæ of Culicoides circumscriptus are extracted from the mud of their natural habitat the great majority exhibit a negative phototaxis. If they are kept in water without food over a period of time many become positively phototactic. The percentage of larvæ which undergo this reversal increases rapidly for 6–7 days and thereafter remains fairly constant at a level of between 60 and 90 per cent of their total number.
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BECKER, P. Changes in Response to Light Stimuli of the Larvæ of Culicoides circumscriptus . Nature 180, 559–560 (1957). https://doi.org/10.1038/180559b0
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DOI: https://doi.org/10.1038/180559b0
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