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Circadian Rhythms and time Measurement in Locomotor Activity of the Scorpion Leiurus Quinquestriatus (Buthidae)
| Content Provider | Scilit |
|---|---|
| Author | Bakary, Zeinab El Fuzeau-Braesch, Suzel |
| Copyright Year | 1988 |
| Description | Journal: Chronobiology international The circadian rhythms of locomotor activity of the scorpion Leiurus quinqueslriatus were examined under different light-dark cycles and in free-running conditions. The circadian rhythm is bimodal in LD 12:12 with alternating cycles of temperature (35°-25°C) with high intensity (1300 lux) or in LD 12: 12 with constant temperature 35° C with 300 lux. In LD 12:12 (1300 lux), in long or in short light spans with constant temperature, the bimodal pattern is slightly changed with the appearance of a third minor peak of activity. In free-running conditions, the bimodal rhythm of locomotor activity persists in DD with T about 24 hr, but in LL the rhythm becomes unimodal with T about 24 hr. Cosinor and power spectrum analysis showed the presence of more than one periodic component. It seems that there is a correlation between the range of light regimens, temperature, light intensity and the coincidence of these components. These components are independently entrained by the environmental light cycle. The mechanism of entrainment of components is discussed. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.3109/07420528809079557 |
| Ending Page | 174 |
| Page Count | 8 |
| Starting Page | 167 |
| ISSN | 07420528 |
| e-ISSN | 15256073 |
| DOI | 10.3109/07420528809079557 |
| Journal | Chronobiology international |
| Issue Number | 2 |
| Volume Number | 5 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1988-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Chronobiology international Circadian Rhythms Locomotor Activity Time Measurement Scorpion Leiurus Leiurus Quinquestriatus |
| Content Type | Text |
| Subject | Physiology Physiology (medical) |
