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Chronobiologic study in the domestic duck. II. Physiological mechanism of the chronobiologic action of visible light on the gonads of the male duck

Journal Article:

Abstract

The physiological mechanism of the gonad-stimulant effect of light rays on the pre-pubertal duck testis, is the basis of any chronobiological study of this effect. The light stimulates the chain formed by the retina, the optic nerve, the hypothalamus and the anterior part of the pituitary. This chain includes 2 photo-receptors, a superficial one, the retina and a deep one, the hypothalamus. The retina is here only sensitive to orange and red rays. Consequently an autonomic retina intervenes instead of the visual retina. The hypothalamus, on the other hand, is sensitive to all visible rays when they are brought directly in contact with it through a quartz rod placed in the orbit which has been previously emptied. The hypothalamus, which is thus enlightened directly is more than a hundred times more sensitive than the retina. This great sensitivity allows normal stimulation by the most penetrating rays in the orbital region. Ultra-violet and infrared rays are inactive on the autonomic retina and on the hypothalamus. The neuro-secretory cells of the latter, stimulated directly or indirectly, secrete hormones which via the axones reach a capillary network covering the median eminence, then, by series of portal veins, the anterior part of the pituitary,  More>>
Authors:
Publication Date:
Apr 01, 1978
Product Type:
Journal Article
Reference Number:
EDB-81-012703
Resource Relation:
Journal Name: Chronobiologia (Milan); (Italy); Journal Volume: 5:2
Subject:
59 BASIC BIOLOGICAL SCIENCES; TESTES; PHOTOSENSITIVITY; STIMULATION; VISIBLE RADIATION; BIOLOGICAL PATHWAYS; AUTONOMIC NERVOUS SYSTEM; BIOLOGICAL RADIATION EFFECTS; DUCKS; HORMONES; HYPOTHALAMUS; INFRARED RADIATION; MALES; NERVE CELLS; PHYSIOLOGY; PITUITARY GLAND; RECEPTORS; RETINA; ULTRAVIOLET RADIATION; VISIBLE SPECTRA; ANIMAL CELLS; ANIMALS; BIOLOGICAL EFFECTS; BIRDS; BODY; BODY AREAS; BRAIN; CENTRAL NERVOUS SYSTEM; ELECTROMAGNETIC RADIATION; ENDOCRINE GLANDS; EYES; FACE; FOWL; GLANDS; GONADS; HEAD; MALE GENITALS; NERVOUS SYSTEM; ORGANS; RADIATION EFFECTS; RADIATIONS; SENSE ORGANS; SENSITIVITY; SOMATIC CELLS; SPECTRA; VERTEBRATES; 551000* - Physiological Systems
OSTI ID:
6854093
Research Organizations:
College de France, Paris
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: CBLGA
Submitting Site:
TIC
Size:
Pages: 158-168
Announcement Date:
Feb 01, 1981

Journal Article:

Citation Formats

Benoit, J M. Chronobiologic study in the domestic duck. II. Physiological mechanism of the chronobiologic action of visible light on the gonads of the male duck. Italy: N. p., 1978. Web.
Benoit, J M. Chronobiologic study in the domestic duck. II. Physiological mechanism of the chronobiologic action of visible light on the gonads of the male duck. Italy.
Benoit, J M. 1978. "Chronobiologic study in the domestic duck. II. Physiological mechanism of the chronobiologic action of visible light on the gonads of the male duck." Italy.
@misc{etde_6854093,
title = {Chronobiologic study in the domestic duck. II. Physiological mechanism of the chronobiologic action of visible light on the gonads of the male duck}
author = {Benoit, J M}
abstractNote = {The physiological mechanism of the gonad-stimulant effect of light rays on the pre-pubertal duck testis, is the basis of any chronobiological study of this effect. The light stimulates the chain formed by the retina, the optic nerve, the hypothalamus and the anterior part of the pituitary. This chain includes 2 photo-receptors, a superficial one, the retina and a deep one, the hypothalamus. The retina is here only sensitive to orange and red rays. Consequently an autonomic retina intervenes instead of the visual retina. The hypothalamus, on the other hand, is sensitive to all visible rays when they are brought directly in contact with it through a quartz rod placed in the orbit which has been previously emptied. The hypothalamus, which is thus enlightened directly is more than a hundred times more sensitive than the retina. This great sensitivity allows normal stimulation by the most penetrating rays in the orbital region. Ultra-violet and infrared rays are inactive on the autonomic retina and on the hypothalamus. The neuro-secretory cells of the latter, stimulated directly or indirectly, secrete hormones which via the axones reach a capillary network covering the median eminence, then, by series of portal veins, the anterior part of the pituitary, the corresponding cells of which secrete various hormones, which through the systemic circulation reach the corresponding target organs and in particular the gonads. It is thus a neuro-hormonal mechanism which the external factor light brings into play to stimulate various functions of the autonomic life of the organism.}
journal = {Chronobiologia (Milan); (Italy)}
volume = {5:2}
journal type = {AC}
place = {Italy}
year = {1978}
month = {Apr}
}