Photoreception in the circadian rhythm of stridulatory activity inEphippiger (Ins., Orthoptera)

Dumortier, Bernard

doi:10.1007/bf00696521

Cited by 34 publications

(2 citation statements)

References 24 publications

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“…The cricket Teleogryllus commodus shows light-dependent changes in free-running period after removal of the compound eyes, and ocelli are thought to be the source of the light information for this period modulation (Rence et al, 1988). In species of Ephippiger, photic entrainment still occurs after removal of the compound eyes and ocelli by electrocoagulation (Dumortier, 1972). Similar weak photic entrainment can be observed after removal or occlusion of the compound eyes in the New Zealand weta Hemideina thoracica (Waddel et al, 1990) and the ground cricket Dianemobius nigrofasciatus (Shiga et al, 1999).…”

Section: Structure Of the Circadian System Photoreceptormentioning

confidence: 99%

Circadian Organization in Hemimetabolous Insects

Tomioka

Abdelsalam

2004

Zoological Science

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ABSTRACT-The circadian system of hemimetabolous insects is reviewed in respect to the locus of the circadian clock and multioscillatory organization. Because of relatively easy access to the nervous system, the neuronal organization of the clock system in hemimetabolous insects has been studied, yielding identification of the compound eye as the major photoreceptor for entrainment and the optic lobe for the circadian clock locus. The clock site within the optic lobe is inconsistent among reported species; in cockroaches the lobula was previously thought to be a most likely clock locus but accessory medulla is recently stressed to be a clock center, while more distal part of the optic lobe including the lamina and the outer medulla area for the cricket. Identification of the clock cells needs further critical studies. Although each optic lobe clock seems functionally identical, in respect to photic entrainment and generation of the rhythm, the bilaterally paired clocks form a functional unit. They interact to produce a stable time structure within individual insects by exchanging photic and temporal information through neural pathways, in which serotonin and pigment-dispersing factor (PDF) are involved as chemical messengers. The mutual interaction also plays an important role in seasonal adaptation of the rhythm.

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Section: Structure Of the Circadian System Photoreceptormentioning

confidence: 99%

Circadian Organization in Hemimetabolous Insects

Tomioka

Abdelsalam

2004

Zoological Science

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“…It has been shown that under a 24-h lightdark regime and constant temperature insects have species-specific patterns of locomotor and other activities (Nielsen, 1938;Roberts, 1960;Warnecke, 1964;Wobus, 1966;Dumortier, 1972;Loher, 1972;Sokolove, 1975). Nielsen (1974) showed that in the orthopteran Eugaster guyoni the timing of stridulatory activity is influenced by the temperature during light and dark phases.…”

Section: Introductionmentioning

confidence: 99%

Three different diel rhythms of the calling song in the cricket, Gryllus campestris, and their control mechanisms*

Honegger

1981

Physiological Entomology

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ABSTRACT. Males of the cricket, Gryllus campestris L. (Orthoptera: Gryllidae), displayed three different diel patterns in the timing of their calling song: 55% of all males investigated were dark‐active, 25% light‐active and 20% light‐and‐dark‐active. Dark‐active males continued to stridulate in both constant darkness (DD) and constant light (LL) during the subjective night, with a circadian period usually shorter (in DD) or longer (in LL) than 24h. Light‐active males were mainly silent in DD but showed a circadian rhythm in LL, though with a 180° phase shift, i.e. activity during subjective night. This suggests that daytime activity has developed from nocturnal activity by a mechanism which prevents stridulation during darkness, and that both patterns are driven by the same endogenous clock. In the light‐and‐dark‐active males some stridulation takes place during darkness, so dark inhibition is not complete. Such incomplete inhibition seemed to occur only in highly active animals. The three diel distribution patterns of the calling song are discussed in relation to sharing the chances of attracting females.

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Daily and Seasonal Rhythms

Underwood

Wassmer

Page

1997

Comprehensive Physiology

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The sections in this article are: Daily Rhythms Models and Mechanisms Circadian Pacemaking Systems in Invertebrates Pacemakers in the Arthropod Brain Circadian Pacemakers Outside the Nervous System in Insects Pacemakers in the Gastropod Retina Multioscillator Organization Identification of Output Pathways Circadian Pacemaking Systems in Vertebrates The Mammalian SCN Other Circadian Oscillators in Mammals Hypothalamic Regulation of Circadian Function in Nonmammalian Vertebrates The Pineal Organ Eyes as Clocks Photoreceptor Localization and Mechanisms of Entrainment in Invertebrates Photoreceptive Input: Invertebrates Mechanisms of Regulation of Pacemaker Phase Photoreceptor Localization and Mechanisms of Entrainment in Vertebrates Identification of Photoreceptors Mechanisms of Regulation of Pacemaker Phase Seasonality in Invertebrates Modes of Seasonality Timing of Seasonal Cycles Photoperiodic Time Measurement Mechanisms of Photoperiodic Time Measurement The Photoperiodic Timer The Photoperiodic Counter Anatomical Location of Timers and Counters Photoreceptors Circannual Rhythms Seasonality in Vertebrates Photoperiodic Time Measurement: Models and Experimental Validation Physiological Mechanisms The Pineal and Melatonin: Mammals Mechanisms of Pineal Action The Pineal and Melatonin: Nonmammalian Vertebrates Photoreceptive Inputs: Mammalian Photoreceptive Inputs: Nonmammalian Maternal–Fetal Transfer of Photoperiodic Information Circannual Rhythms Physiological Mechanisms Concluding Comments

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Photoreception in the circadian rhythm of stridulatory activity inEphippiger (Ins., Orthoptera)

Cited by 34 publications

References 24 publications

Circadian Organization in Hemimetabolous Insects

Circadian Organization in Hemimetabolous Insects

Three different diel rhythms of the calling song in the cricket, Gryllus campestris, and their control mechanisms*

Daily and Seasonal Rhythms

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