The 24-h rhythm of metabolic activity of the cockroach circadian pacemaker.
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.
Lavialle
M
M
Laboratoire de Physiologie Sensorielle, Institut National de la Recherche Agronomique, Jouy-en-Josas, France.
Chabanet
C
C
Dumortier
B
B
D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology*; D003058:Cockroaches / Q000502:physiology*; D003624:Darkness; D003576:Electron Transport Complex IV / Q000032:analysis* / Q000737:chemistry; D004596:Electroretinography; D004734:Energy Metabolism; D006651:Histocytochemistry; D066298:In Vitro Techniques; D009043:Motor Activity / Q000502:physiology; D009474:Neurons / Q000201:enzymology / Q000378:metabolism; D009899:Optic Lobe, Nonmammalian / Q000033:anatomy & histology / Q000378:metabolism* / Q000502:physiology
D003576:Electron Transport Complex IV