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 Experiment Videos

Studying the snail's clock at better than a snail's pace

G D Block1

  • 1NSF Science and Technology Center and Biology Department, University of Virginia, Charlottesville 22901, USA.

Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Medicas E Biologicas
|January 1, 1996
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Effects of Photoperiod and Temperature on Egg-Laying Behavior in a Marine Mollusk, Aplysia californica.

The Biological bulletin·2018
Same author

Chronic jet-lag increases mortality in aged mice.

Current biology : CB·2006
Same author

Cardiovascular tissues contain independent circadian clocks.

Clinical and experimental hypertension (New York, N.Y. : 1993)·2005
Same author

Procreation for donation: the moral and political permissability of "having a child to save a child".

Cambridge quarterly of healthcare ethics : CQ : the international journal of healthcare ethics committees·2003
Same author

Health problems in adolescents with alcohol use disorders: self-report, liver injury, and physical examination findings and correlates.

Alcoholism, clinical and experimental research·2001
Same author

Circadian rhythms in firing rate of individual suprachiasmatic nucleus neurons from adult and middle-aged mice.

Neuroscience·2001

The snail

Area of Science:

  • Neuroscience
  • Chronobiology
  • Marine Biology

Background:

  • The eye of Bulla gouldiana, the cloudy bubble snail, exhibits a nocturnal locomotor rhythm.
  • This rhythm is controlled by a circadian pacemaker located within the eye.
  • The eye displays a circadian rhythm in spontaneous impulse activity originating from retinal neurons.

Purpose of the Study:

  • To investigate the mechanisms underlying circadian rhythm generation in the snail's eye.
  • To determine the role of transmembrane ion fluxes in rhythm generation versus expression.
  • To identify the molecular processes critical for maintaining the circadian rhythm.

Main Methods:

  • Electrophysiological recordings from retinal "clock neurons".
  • Analysis of calcium influx and potassium conductance during light-induced synchronization.

Related Experiment Videos

  • Investigation of the role of transcription and translation in rhythm generation.

    • Main Results:

    • Circadian rhythm generation in the snail's eye does not depend on transmembrane ion fluxes.
    • Rhythm expression involves ionic calcium flux and changes in potassium conductance.
    • Molecular events, specifically transcription and translation, are crucial for generating the optic nerve activity rhythm.

    Conclusions:

    • The circadian pacemaker in Bulla gouldiana's eye relies on molecular mechanisms rather than solely on ion transport.
    • Understanding these molecular underpinnings provides insight into fundamental principles of circadian rhythm generation.
    • This study highlights the distinct roles of molecular and ionic processes in the expression and generation of biological rhythms.