Light suppresses the activity of serotonin-immunoreactive neurons in the optic lobe of the swallowtail butterfly

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Abstract

Intracellular recordings and stainings were made from 5-HT-immunoreactive neurons with a large soma at the anterior edge of the second optic neuropile of the swallowtail butterfly Papilio xuthus. The neurons have a dendritic arborization in the third optic neuropile and project axonal processes to the first optic neuropile and the dorsal protocerebrum. The neurons discharged impulses in the dark and the impulse discharge was inhibited by illumination of the ipsilateral eye. The anatomical and physiological profiles suggest that the neurons may have a role in controlling the light-dark adaptation or the overall activity of the optic lobe and the midbrain.

References (15)

  • T. Crow

    Cellular and molecular analysis of associative learning and memory in Hermissenda

    Trends Neurosci.

    (1988)
  • D.R. Nässel

    Neurotransmitters and neuromodulators in the insect visual system

    Prog. Neurobiol.

    (1991)
  • B.S. Beltz et al.

    Physiological identification, morphological analysis, and development of identified serotonin-proctolin containing neurons in the lobster ventral nerve cord

    J. Neurosci.

    (1987)
  • I. Bermudez et al.

    Multiple serotonin-activated currents in isolated, neuronal somata from locust thoracic ganglia

    J. Exp. Biol.

    (1992)
  • G. Bicker et al.

    Chemical codes for the control of behaviour in arthropods

    Nature (London)

    (1989)
  • J.L. Casagrand et al.

    Biogenic amines modulate synaptic transmission between identified giant interneurons and thoracic interneurons in the escape system of the cockroach

    J. Neurobiol.

    (1992)
  • P.A. Getting

    Emerging principles governing the operation of neural networks

    Annu. Rev. Neurosci.

    (1989)
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