Changes in Response to Light Stimuli of the Larvæ of Culicoides circumscriptus

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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