PMID: 9554577Apr 29, 1998Paper

Photoreception in entrainment of rhythms and photoperiodic regulation of diapause in a hemipteran, Graphosoma lineatum

Journal of Biological Rhythms
K Nakamura, M Hodkova

Abstract

The role of compound eyes in photoperiodic regulation of diapause and entrainment of circadian rhythms was studied in a hemipteran, Graphosoma lineatum. Bilateral removal of compound eyes resulted in the loss of locomotor rhythmicity under both 24-h light cycle and constant darkness. The arrhythmicity was associated with the loss of photoperiodic regulation of diapause. Females with removed compound eyes had similar incidence of oviposition under diapause preventing long-day photoperiod (light:dark [LD] 18:6) and diapause inducing short-day photoperiod (LD 12:12). By contrast, both locomotor rhythmicity and photoperiodic regulation of diapause were maintained after unilateral removal of compound eyes. The results suggest that the compound eye-optic lobe axis is involved in the transmission of light signals for both entrainment of rhythms in locomotor activity and photoperiodism. The compound eyes probably act as photoreceptors in both transmission chains. Sites of the clocks for the two phenomena are discussed.

References

Jan 1, 1990·Journal of Biological Rhythms·B WaddellW Engelmann
Jan 1, 1985·Chronobiology International·C HelfrichW Engelmann
Sep 1, 1984·Proceedings of the National Academy of Sciences of the United States of America·M F BowenL I Gilbert
Nov 1, 1993·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·B R Ferrell, B G Reitcheck

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Citations

Apr 3, 2001·Microscopy Research and Technique·T OishiS Tamotsu
Jul 5, 2005·Journal of Insect Physiology·H V Danks
Oct 30, 2010·Journal of Insect Physiology·Vladimír Koštál
Dec 23, 2004·Zoological Science·Kenji Tomioka, Salaheldin Abdelsalam

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