The Photoresponses of the Trout Pineal Cells

  • C. Kusmic
  • P. L. Marchiafava
  • E. Strettoi
Part of the NATO ASI Series book series (NSSA, volume 194)


The pineal body of the trout is a strongly vascularized rounded structure (about 1 mm diameter), lying upon the dorso- lateral portion of the diencephalon and attached to it by means of a peduncle about 2 mm long. The pineal body is essentially a photoneuroendocrine organ since several lines of evidences indicate its light regulated influence on locomotion, gonadotropic activity as well as on the production of melatonin, an hormon involved in body pigmentation (Oksche, 1986).


Pineal Organ Logarithmic Unit Longe Response Latency Depolarize Cell Pineal Body 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • C. Kusmic
    • 1
  • P. L. Marchiafava
    • 1
  • E. Strettoi
    • 1
    • 2
  1. 1.Dipartimento di Fisiologia e BiochimicaUniversita’ di PisaItaly
  2. 2.Istituto di NeurofisiologiaCNRPisaItaly

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