title: Narrow-spectrum chemoreceptor cells in the antennules of the American lobster, Homarus americanus.
abstract: The present study shows that smell (antennular) receptor cells are as narrowly tuned to single compounds as taste (leg) receptor cells in the lobster. Antennular receptors responded best to hydroxy-L-proline (57% of the 30 cells sampled) and taurine (24%). In the presence of 14 other compounds in equimolar concentrations, the hydroxy-L-proline and taurine receptors showed a suppressed response to their best stimulus. Other cells had best responses to ammonium chloride, betaine, L-glutamate or L-proline. The results have implications for molecular receptor processes and for the neural basis of feeding behavior.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002628:Chemoreceptor Cells / Q000166:cytology* / Q000502:physiology; D008121:Nephropidae / Q000033:anatomy & histology*; D012903:Smell / Q000502:physiology; D013268:Stimulation, Chemical; D013649:Taste / Q000502:physiology