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Involvement of tissue monoamine and plasma FFA concentrations in the responses of the pigeon to changes of photoperiod

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Summary

A deviation of the length of photophase from the rhythm of 12L∶12D induced monoamine accumulation in diencephalon and pancreas. A short photophase increased plasma FFA. The results suggest that photoperiodism is a stronger modulator of catecholamines and lipid metabolism than changes in ambient temperature (Ta).

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Authors and Affiliations

  1. Department of Zoology, Zoophysiological Laboratory, University of Oulu, SF-90100, Oulu 10, Finland

    S. Saarela, E. Hohtola, A. Haim & O. Vakkuri

  2. University of Haifa, Oranim, P.O., Kiryat Tivon, Israel

    S. Saarela, E. Hohtola, A. Haim & O. Vakkuri

Authors
  1. S. Saarela
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  2. E. Hohtola
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  3. A. Haim
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  4. O. Vakkuri
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Additional information

Acknowledgment. The support of Emil Aaltonen foundation (to E.H.) and the Finnish Ministry of Education (to A.H.) is gratefully acknowledged.

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Saarela, S., Hohtola, E., Haim, A. et al. Involvement of tissue monoamine and plasma FFA concentrations in the responses of the pigeon to changes of photoperiod. Experientia 37, 1085–1086 (1981). https://doi.org/10.1007/BF02085025

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