Affiliation:
1. Institute of Neuroscience, 1254 University of Oregon, Eugene, OR 97403-1254, USA
Abstract
SUMMARYBody patterning behavior in unshelled cephalopod molluscs such as squid,octopuses, and cuttlefish is the ability of these animals to create complex patterns on their skin. This behavior is generated primarily by chromatophores, pigment-containing organs that are directly innervated by central motoneurons. The present study focuses on innervation patterns and location of chromatophore motoneurons in the European cuttlefish Sepia officinalis, specifically those motoneurons that control chromatophores of the fin. The fin is known to be innervated by the large, branching fin nerve. This study further characterizes the innervation of fin chromatophores by the fin nerve, generates a reference system for the location of fin nerve branches across individuals, and localizes the neurons whose axons innervate fin chromatophores through the fin nerve. Data from extracellular stimulation of fin nerve branches in intact animals demonstrate topographic innervation of fin chromatophores, while retrograde labeling data reveal the posterior subesophageal mass of the brain as the primary location of fin chromatophore motoneurons.
Publisher
The Company of Biologists
Subject
Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics
Reference34 articles.
1. Boycott, B. B. (1961). The functional organization of the brain of the cuttlefish Sepia officinalis. Proc. R. Soc. Lond. B153,503-534.
2. Bühler, A., Froesch, D., Mangold, K. and Marthy, H.(1975). On the motor projection of the stellate ganglion in Octopus vulgaris. Brain Res.88, 69-72.
3. Cloney, R. A. and Florey, E. (1968). Ultrastructure of cephalopod chromatophore organs. Z. Zellforsch. Mikrosk. Anat.89,250-280.
4. Dubas, F. (1987). Innervation of chromatophore muscle fibres in the octopus Eledone cirrhosa. Cell Tissue Res.248,675-682.
5. Dubas, F. and Boyle, P. R. (1985). Chromatophore motor units in Eledone cirrhosa (Cephalopoda:Octopoda). J. Exp. Biol.117,415-431.
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