Pigment migration in fish erythrophores is controlled by alpha 2-adrenoceptors |
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Authors: | J O Karlsson R G Andersson H Elwing N Grundstr?m |
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Institution: | Department of Pharmacology, Link?ping University, Sweden. |
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Abstract: | 1. The aggregation of erythrosomes within erythrophores of the squirrel fish (Myripristis occidentalis; belonging to the family Holocentridae) was, on pharmacological grounds, shown to be mediated by alpha 2-adrenoceptors. 2. The erythrophores were shown to be controlled by adrenergic nerves activating the alpha 2-adrenoceptors. 3. The erythrophores themselves were found to possess a K+-sensitive mechanism of aggregation. 4. Some similarities and differences of the alpha 2-adrenoceptor-mediated chromatosome aggregation in melanophores and erythrophores are also discussed. |
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