Journal article
Circadian rhythms of activity, ventilatory frequency and heart rate in the adult River lamprey, Lampetra fluviatilis
Journal of Zoology, Vol.171(2), pp.239-250
1973
Abstract
Activity and the electrocardiogram and respiratory potentials of 17 adult River lampreys, Lampetra fluviatilis, acclimated to 7°± 1°C and a light/dark cycle of 11/13 hours, were recorded throughout the spawning run (November to April). Activity was far greater in the dark in all but the sexually mature animals, reflecting behaviour in the field. A circadian rhythm was also observed in the heart rate during periods of inactivity, and this was correlated with an increase in ventilatory frequency or amplitude. A similar rhythm was not present in the sexually mature animals. Moreover, heart and ventilatory frequencies tended to increase during the spawning run. A whole number ratio between heart rate and ventilatory frequency was seen in only 11 of 425 recordings.
Details
- Title
- Circadian rhythms of activity, ventilatory frequency and heart rate in the adult River lamprey, Lampetra fluviatilis
- Authors/Creators
- P.N. Claridge (Author/Creator) - University of BathI.C. Potter (Author/Creator) - University of BathG.M. Hughes (Author/Creator) - University of Bristol
- Publication Details
- Journal of Zoology, Vol.171(2), pp.239-250
- Publisher
- Wiley-Blackwell
- Identifiers
- 991005544317807891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
Metrics
40 Record Views