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The 24-h rhythm of metabolic activity of the cockroach circadian pacemaker
M Lavialle1, C Chabanet, B Dumortier
1Laboratoire de Physiologie Sensorielle, Institut National de la Recherche Agronomique, Jouy-en-Josas, France.
Neuroscience Letters
|October 23, 1989
Abstract:
In the cockroach, Leucophaea maderae, the optic lobes contain a circadian pacemaker. The metabolic activity of optic lobe neuropils was measured at 17 time points over a 24-h period in constant darkness, using cytochrome oxidase activity as functional marker. The results revealed a clear 24-h energy metabolism rhythm in neuropils and particularly in the lobula plate, a part of the region which is assumed to include a circadian pacemaker in this species.