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. © 1991, Sage Publications. All rights reserved.
CITATION STYLE
Jallageas, M., Mas, N., & Nouguier-Soulé, J. (1991). Control of Annual Endocrine Rhythms in the Edible Dormouse: Nonprimary Effect of Photoperiod. Journal of Biological Rhythms, 6(4), 343–352. https://doi.org/10.1177/074873049100600405
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