Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

4.6K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.6K
Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response

431
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
431
Biological Clocks and Seasonal Responses02:45

Biological Clocks and Seasonal Responses

41.9K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
41.9K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Identification and characterization of visual pigments in caecilians (Amphibia: Gymnophiona), an order of limbless vertebrates with rudimentary eyes.

The Journal of experimental biology·2010
Same author

The pathway controlling the pupillary light reflex in urodeles.

Experimental brain research·1994
Same author

Telencephalic structures are involved in learning and memory in the newt Triturus alpestris.

Die Naturwissenschaften·1990
Same author

Putative neurotransmitters in the retinae of three urodele species (Triturus alpestris, Salamandra salamandra, Pleurodeles waltli).

Cell and tissue research·1988
Same author

On the presence of nucleus ruber in the urodele Salamandra salamandra and the caecilian Ichthyophis kohtaoensis.

Behavioural brain research·1988
Same author

Two populations of serotonin-immunoreactive neurons in the frog (Rana esculenta) retina.

Neuroscience letters·1988

Related Experiment Video

Updated: Mar 6, 2026

Recording and Analysis of Circadian Rhythms in Running-wheel Activity in Rodents
05:46

Recording and Analysis of Circadian Rhythms in Running-wheel Activity in Rodents

Published on: January 24, 2013

22.2K

[Diurnal rhythm in salamanders].

W Himstedt1

  • 1I. Zoologisches Institut der Universität Wien, Österreich.

Oecologia
|March 18, 2017
PubMed
Summary
This summary is machine-generated.

European salamander species exhibit distinct light and dark activity patterns, varying with life stage. Larval activity is high but less rhythmic than adults, with rhythms reappearing after metamorphosis.

More Related Videos

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
04:37

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

16.5K
Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila
18:08

Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila

Published on: September 28, 2010

48.4K

Related Experiment Videos

Last Updated: Mar 6, 2026

Recording and Analysis of Circadian Rhythms in Running-wheel Activity in Rodents
05:46

Recording and Analysis of Circadian Rhythms in Running-wheel Activity in Rodents

Published on: January 24, 2013

22.2K
Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
04:37

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

16.5K
Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila
18:08

Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila

Published on: September 28, 2010

48.4K

Area of Science:

  • Herpetology
  • Animal behavior
  • Chronobiology

Context:

  • Locomotor activity patterns in European salamanders are species-specific.
  • Activity rhythms vary significantly between larval and adult stages.
  • Environmental factors influence diurnal and nocturnal activity.

Purpose:

  • To investigate and compare the locomotor activity patterns of different European salamander species.
  • To determine how activity rhythms change throughout the salamander life cycle, including metamorphosis.
  • To identify species-specific adaptations in activity timing related to light and dark cycles.

Summary:

  • European salamander species display unique activity patterns: Triturus vulgaris is light-active, Salamandra salamandra is dark-active, and T. alpestris/cristatus are intermediate.
  • Larval activity is high but less rhythmic than adults. Rhythms are lost during metamorphosis but re-emerge in terrestrial adults.
  • Aquatic adult Triturus species are active day and night, with peaks at twilight/darkness. Terrestrial adults are primarily active during twilight or darkness, with species-specific variations.

Impact:

  • Provides crucial data for understanding amphibian behavioral ecology and adaptation.
  • Highlights the plasticity of circadian rhythms in response to life-cycle transitions.
  • Informs conservation strategies by detailing species-specific habitat and activity requirements.