Abstract
Neurotransmitter regulation of the siphon and adjacent mantle region of bivalves has not previously been examined. In the biofouling bivalve, Dreissena polymorpha, acetylcholine and FMRFamide both elicited contractions of siphon/mantle preparations. Hexamethonium bromide inhibited acetylcholine-elicited contractions but had no effect on FMRFamide-elicited contractions. FMRFamide-like immunoreactivity and chromatographic evidence for acetylcholine were found in central ganglia and the siphon/mantle region. Extracts of siphons, gonads, and gills, separated on Sephadex G-25, also contained macromolecules larger than acetylcholine and FMRFamide that caused siphon/mantle contraction. These results demonstrate regulation of contraction by several potential neurotransmitter agents in a new bivalve preparation, the siphon/mantle.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Comparative Biochemistry and Physiology. Part C: Comparative Pharmacology and Toxicology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
