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Experientia

, Volume 39, Issue 10, pp 1101–1102 | Cite as

Photoperiodicity in the male rosefinch

  • V. Kumar
  • P. D. Tewary
  • P. M. Tripathi
Short Communications Physiology, Pathophysiology

Summary

In male rosefinches (Carpodacus erythrinus) 12 h non-stimulatory photoperiods (12L∶12D) were as effective in stimulating testicular recrudescence, as were long photoperiods (18L∶6D) when presented as several intermittent symmetrical photoperiods. The results are discussed with regard to the hypothesis that photoperiodic effects in birds are mediated by circadian rhythms.

Keywords

Circadian Rhythm Photoperiodic Effect Testicular Recrudescence Carpodacus Erythrinus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Birkhäuser Verlag 1983

Authors and Affiliations

  • V. Kumar
    • 1
  • P. D. Tewary
    • 1
  • P. M. Tripathi
    • 1
  1. 1.Department of ZoologyBanaras Hindu UniversityVaranasi(India)

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