Abstract
A review of available evidence—mostly involving the cockroach—suggests that insect circadian rhythms are not controlled primarily by hormones. The primary pace-maker seems rather to be electrical, acting through the ventral nerve cord.
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BRADY, J. How are Insect Circadian Rhythms Controlled?. Nature 223, 781–784 (1969). https://doi.org/10.1038/223781a0
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DOI: https://doi.org/10.1038/223781a0
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