... the tentacles of Calliactis parasitica show that L-Dopa evokes bursts of electrical events apparently associated with a local nerve net. We propose that L-Dopa be added to the growing list of putative transmitter substances in sea anemones, its action being to coordinate local inhibition of spontaneous tentacle...

...Kwangwook Cho; Ian D. Mcfarlane ABSTRACT Glass microelectrodes were used to record electrical activity from thin rings cut from the column of the sea anemone Calliactis parasitica . This is the first time that pulses have been recorded from the nervous system in the column. Three pulse types were...

... muscles in four species of sea anemone. In a fifth species, Protanthea simplex , Antho-RWamide II, but not Antho-RWamide I, evoked contractions of body wall muscles. Isolated, trimmed sphincter muscle preparations of Calliactis parasitica contracted at a threshold concentration of 10 −9 moll −1 Antho...