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Science 11 June 1982:
Vol. 216. no. 4551, pp. 1250 - 1252
DOI: 10.1126/science.6123151
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Articles

Science, Vol 216, Issue 4551, 1250-1252
Copyright © 1982 by American Association for the Advancement of Science

articles

Efferent fibers to Limulus eyes synthesize and release octopamine

BA Batelle, JA Evans, and SC Chamberlain

Octopamine synthesized in vitro from tyramine by Limulus lateral and ventral eyes was located by light microscopic and electron microscopic autoradiography in efferent fibers which innervate ventral photoreceptors and lateral eye ommatidia. Newly synthesized octopamine was released from efferent fibers in response to depolarization in high concentrations of potassium. We propose that octopamine is a neurotransmitter of efferent fibers that may modulate basic retinal processes such as photoreceptor sensitivity, photomechanical movements, and photoreceptive membrane turnover.


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Modulation of the Light Response by cAMP in Drosophila Photoreceptors.
S. Chyb, W. Hevers, M. Forte, W. J. Wolfgang, Z. Selinger, and R. C. Hardie (1999)
J. Neurosci. 19, 8799-8807
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A Myosin III from Limulus Eyes Is a Clock-Regulated Phosphoprotein.
B.-A. Battelle, A. W. Andrews, B. G. Calman, J. R. Sellers, R. M. Greenberg, and W. C. Smith (1998)
J. Neurosci. 18, 4548-4559
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