Evidence for a Common Pattern of Peptidergic Innervation of Cnidocytes

Tentacles from representatives of all four classes of the phylum Cnidaria were examined using antibodies against the neuropeptides FMRFamide and RFamide to reveal the organization of neurons and nerve nets associated with cnidocytes. The tentacles of all species examined contained FMRFamide- or RFam...

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Bibliographic Details
Published in:	The Biological bulletin (Lancaster) Vol. 207; no. 2; pp. 141 - 146
Main Authors:	Peter A. V. Anderson, Thompson, Louise F., Moneypenny, Craig G.
Format:	Journal Article
Language:	English
Published:	United States Marine Biological Laboratory 01-10-2004 University of Chicago Press
Subjects:	Animal Structures - anatomy & histology Animal Structures - innervation Animals Antibodies Atlantic Ocean Cellular immunity Chemoreceptors Cnidaria Cnidaria - anatomy & histology Cnidocytes Cubozoa Ectoderm FMRFamide - metabolism Hydrozoa Immunoglobulins Immunohistochemistry Influence Innervation Lasers Marine Marine biology Microscopy, Confocal Microscopy, Fluorescence Nematocysts Nerve net Nerve Net - cytology Neurobiology and Behavior Neurons Neuropeptides Neuropeptides - metabolism Peptides Physiological aspects Plexus Scyphozoa Sensory neurons Species Specificity Stimuli (Psychology) Taxonomy Atlantic Ocean United States
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Summary:	Tentacles from representatives of all four classes of the phylum Cnidaria were examined using antibodies against the neuropeptides FMRFamide and RFamide to reveal the organization of neurons and nerve nets associated with cnidocytes. The tentacles of all species examined contained FMRFamide- or RFamide-immunoreactive neurons, in varying densities. In representatives from the Scyphozoa, Hydrozoa, and Cubozoa, the FMRFamide-immunoreactive neurons formed plexuses at the base of the cnidocyte assemblages; in anthozoans, the absence of discrete assemblies of cnidocytes precluded visual co-localization of cnidocytes and immunoreactive neurons. In all four classes, immunoreactive sensory cells connected these peptidergic nerve nets to the surface of the tentacle. These findings suggest that members of all four cnidarian classes share a common organizational pattern, and it is proposed that this peptidergic innervation may be involved in the chemosensory regulation of cnidocyte discharge.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0006-3185 1939-8697
DOI:	10.2307/1543588