Influence of the epithalamic brain region on amphibian chromatophore behavior

M. Duff Davis; Mac E. Hadley

doi:10.1016/0016-6480(79)90045-5

Influence of the epithalamic brain region on amphibian chromatophore behavior

M. Duff Davis, Mac E. Hadley

Pharmacology

Research output: Contribution to journal › Article › peer-review

Abstract

The possible influence of the epithalamic area on melanophore-stimulating hormone (MSH) release was investigated in Rana berlandieri forreri (Rana pipiens, sensu lato). Electrical stimulation of a specific region on the diencephalic roof resulted in a reversible darkening of skin melanophores. The latency between stimulation and onset of melanophore dispersion averaged from 1 to 3 min. Hypophysectomy, however, prevented the electrical stimulation-induced melanophore response from occurring. Thus, a neuronal, humoral, or integrated neuroendocrine pathway apparently develops from the diencephalon, in proximity to the pineal-subcommissural complex, to regulate pars intermedia MSH secretion.

Original language	English (US)
Pages (from-to)	52-56
Number of pages	5
Journal	General and Comparative Endocrinology
Volume	37
Issue number	1
DOIs	https://doi.org/10.1016/0016-6480(79)90045-5
State	Published - Jan 1979

ASJC Scopus subject areas

Animal Science and Zoology
Endocrinology

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title = "Influence of the epithalamic brain region on amphibian chromatophore behavior",

abstract = "The possible influence of the epithalamic area on melanophore-stimulating hormone (MSH) release was investigated in Rana berlandieri forreri (Rana pipiens, sensu lato). Electrical stimulation of a specific region on the diencephalic roof resulted in a reversible darkening of skin melanophores. The latency between stimulation and onset of melanophore dispersion averaged from 1 to 3 min. Hypophysectomy, however, prevented the electrical stimulation-induced melanophore response from occurring. Thus, a neuronal, humoral, or integrated neuroendocrine pathway apparently develops from the diencephalon, in proximity to the pineal-subcommissural complex, to regulate pars intermedia MSH secretion.",

author = "{Duff Davis}, M. and Hadley, {Mac E.}",

note = "Funding Information: We thank Dr. Peter Pickens for technical assistance and Dr. Sally Frost and Dr. John Frost for the illustrations. This research was supported by PHS Grant AM-16282 from the National Institute of Arthritis. Metabolism and Digestive Diseases.",

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AU - Duff Davis, M.

AU - Hadley, Mac E.

N1 - Funding Information: We thank Dr. Peter Pickens for technical assistance and Dr. Sally Frost and Dr. John Frost for the illustrations. This research was supported by PHS Grant AM-16282 from the National Institute of Arthritis. Metabolism and Digestive Diseases.

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N2 - The possible influence of the epithalamic area on melanophore-stimulating hormone (MSH) release was investigated in Rana berlandieri forreri (Rana pipiens, sensu lato). Electrical stimulation of a specific region on the diencephalic roof resulted in a reversible darkening of skin melanophores. The latency between stimulation and onset of melanophore dispersion averaged from 1 to 3 min. Hypophysectomy, however, prevented the electrical stimulation-induced melanophore response from occurring. Thus, a neuronal, humoral, or integrated neuroendocrine pathway apparently develops from the diencephalon, in proximity to the pineal-subcommissural complex, to regulate pars intermedia MSH secretion.

AB - The possible influence of the epithalamic area on melanophore-stimulating hormone (MSH) release was investigated in Rana berlandieri forreri (Rana pipiens, sensu lato). Electrical stimulation of a specific region on the diencephalic roof resulted in a reversible darkening of skin melanophores. The latency between stimulation and onset of melanophore dispersion averaged from 1 to 3 min. Hypophysectomy, however, prevented the electrical stimulation-induced melanophore response from occurring. Thus, a neuronal, humoral, or integrated neuroendocrine pathway apparently develops from the diencephalon, in proximity to the pineal-subcommissural complex, to regulate pars intermedia MSH secretion.

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