Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Click here for more information

Sign In to gain access to subscriptions and/or personal tools.
Journal of Biological Rhythms
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Jallageas, M.
Right arrow Articles by Nouguier-Soulé, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jallageas, M.
Right arrow Articles by Nouguier-Soulé, J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?

Control of Annual Endocrine Rhythms in the Edible Dormouse: Nonprimary Effect of Photoperiod

Monique Jallageas

Laboratory of Endocrinological Neurobiology, URA 1197, CNRS, University of Montpellier , Place E. Bataillon, 34095 Montpellier Cedex 5, France

Nicole Mas

Laboratory of Endocrinological Neurobiology, URA 1197, CNRS, University of Montpellier , Place E. Bataillon, 34095 Montpellier Cedex 5, France

Janine Nouguier-Soulé

Laboratory of Endocrinological Neurobiology, URA 1197, CNRS, University of Montpellier , Place E. Bataillon, 34095 Montpellier Cedex 5, France

We investigated the extent to which photoperiodic fluctuations synchronize annual thyroid and gonadal rhythmicity in edible dormice. The effects of different daylength manipulations (LD 4:20, LD 6:18, LD 18:6, LD 20:4) were examined during the two critical ascending and regressive phases of the annual plasma testosterone and thyroxine cycles that correspond to naturally increasing or decreasing photoperiod variations. The data failed to demonstrate any essential photoperiodic contribution to control systems that generate these two annual biological rhythms in dormice.

Key Words: annual rhythms • photoperiod • testosterone • thyroxine • edible dormouse

Journal of Biological Rhythms, Vol. 6, No. 4, 343-352 (1991)
DOI: 10.1177/074873049100600405
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?