The 24-h rhythm of metabolic activity of the cockroach circadian pacemaker

M Lavialle; C Chabanet; B Dumortier

doi:10.1016/0304-3940(89)90016-5

The 24-h rhythm of metabolic activity of the cockroach circadian pacemaker

Neurosci Lett. 1989 Oct 23;105(1-2):86-90. doi: 10.1016/0304-3940(89)90016-5.

Authors

M Lavialle¹, C Chabanet, B Dumortier

Affiliation

¹ Laboratoire de Physiologie Sensorielle, Institut National de la Recherche Agronomique, Jouy-en-Josas, France.

PMID: 2562063
DOI: 10.1016/0304-3940(89)90016-5

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.

MeSH terms

Animals
Circadian Rhythm / physiology*
Cockroaches / physiology*
Darkness
Electron Transport Complex IV / analysis*
Electron Transport Complex IV / chemistry
Electroretinography
Energy Metabolism
Histocytochemistry
In Vitro Techniques
Motor Activity / physiology
Neurons / enzymology
Neurons / metabolism
Optic Lobe, Nonmammalian / anatomy & histology
Optic Lobe, Nonmammalian / metabolism*
Optic Lobe, Nonmammalian / physiology

Substances

Electron Transport Complex IV