Entrainment of the circadian locomotor activity rhythm in crayfish

Page, Terry L.; Larimer, James L.

doi:10.1007/bf00693608

Cited by 108 publications

(72 citation statements)

References 30 publications

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“…In crustaceans, ablation experiments had indicated that photoreceptors other than the retinular cells and the CPR contribute to entrainment of ERG (234) and locomotory rhythms (16), and that entrainment in crayfish lacking retina and lamina ganglionaris persists under monochromatic blue or red light (235,301). Previously known brain photoreceptors (BPRs) located under the front side of the crayfish cephalothorax (185) have recently been shown to be responsible for the entrainment of locomotory rhythms in a seminal study on the circadian locomotion behaviour of the two crayfish species C. destructor and P. clarkii (17) (cp.…”

Section: Extraretinal Brain Photoreceptorsmentioning

confidence: 99%

“…The retinal light input plays a major role in affecting locomotion: in the crayfish P. clarkii, locomotory activity shows two main peaks closely correlated with the onset and offset of light, respectively. The lights-on-activity peak is initiated by retinal photoreceptors, because animals with ablated retinae lack this activity peak and preferably display the lights-off-activity (16). The period of this activity is supposed to be regulated by the brain, since it is altered after brain resection, while the CPR sets the phase (84).…”

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

“…The period of this activity is supposed to be regulated by the brain, since it is altered after brain resection, while the CPR sets the phase (84). The entrainment of locomotion, however, clearly depends on extraretinal brain photoreceptors (as discussed below in more detail), but there is evidence for a presumed contribution of the sinus gland to entrainment (16).…”

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

“…Ablation of the caudal ganglion showed that the CPR is not necessary for entrainment (16,234,296). However, with a typical transitory reaction upon strong light pulses after continuous darkness adaptation (e.g.…”

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

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Circadian clocks in crustaceans: identified neuronal and cellular systems

Strauß

Dircksen²

2010

Front Biosci

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Circadian rhythms are known for locomotory and reproductive behaviours, and the functioning of sensory organs, nervous structures, metabolism and developmental processes. The mechanisms and cellular bases of control are mainly inferred from circadian phenomenologies, ablation experiments and pharmacological approaches. Cellular systems for regulation summarised here comprise the retina, the eyestalk neuroendocrine X-organ-sinus gland system, several neuropeptides such as red pigment concentrating, hyperglycaemic and pigment-dispersing hormones, and factors such as serotonin and melatonin. No master clock has been identified, but a model of distributed clockwork involves oscillators such as the retinular cells, neurosecretory systems in the optic lobes, putative brain pacemakers, and the caudal photoreceptor. Extraretinal brain photoreceptors mediate entrainment. Comparative analyses of clock neurons and proteins known from insects may allow the identification of candidate clock neurons in crustaceans as putative homologues in the two taxa. Evidence for the existence of "insect-like" intracellular clock proteins and (light sensitive) transcription factors is scarce, but clock-, period-, and cryptochrome-gene products have been localised in the CNS and other organs rendering further investigations into crustacean clockwork very promising.

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Section: Extraretinal Brain Photoreceptorsmentioning

confidence: 99%

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

Section: Integration Of Distributed Circadian Clock Systems and Rhythmentioning

confidence: 99%

See 2 more Smart Citations

Circadian clocks in crustaceans: identified neuronal and cellular systems

Strauß

Dircksen²

2010

Front Biosci

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“…For example, a number of crayfish species are most active during dark hours, e.g. Procambarus clarkii (Page and Larimer, 1972), Orconectes virilis (Hazlett et al, 1979), Astacus astacus (Abrahamsson, 1983), Cherax destructor (Merrick, 1993), Austropotamobius pallipes (Barbaresi and Gherardi, 2001). Even animals that are active during daylight may experience low light and turbid waters.…”

Section: Introductionmentioning

confidence: 99%

Corners and bubble wrap: the structure and texture of surfaces influence crayfish exploratory behaviour

Patullo

Macmillan

2006

Journal of Experimental Biology

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SUMMARY Touch is a principal sense in all animals. It is potentially important in species of freshwater crayfish that encounter murky waters or are nocturnal. Little is known about how tactile (touch) stimuli affect exploratory behaviour under these conditions. We placed animals in different tactile situations at the start of an exploration in a dark arena and tracked the position of the body and antennae to test whether subsequent search behaviour was affected. Individuals were exposed to differently textured walls, channelled out along a wall, or released in contact with no, one, or two walls. A corner arrangement of surfaces, where individuals started near two walls at right angles,produced behaviour that differed from that of other configurations; animals chose one wall and then maintained a close distance from the wall along which they were moving. The distance from a wall adopted by a crayfish walking parallel to it was affected by the texture of the wall. These results on the influence of tactile stimuli on crayfish exploratory behaviour may have implications for other taxa.

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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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Entrainment of the circadian locomotor activity rhythm in crayfish

Cited by 108 publications

References 30 publications

Circadian clocks in crustaceans: identified neuronal and cellular systems

Circadian clocks in crustaceans: identified neuronal and cellular systems

Corners and bubble wrap: the structure and texture of surfaces influence crayfish exploratory behaviour

Daily and Seasonal Rhythms

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