Pattern and Composition of Ionic Currents Around Ovarioles of the Hemipteran, Rhodnius prolixus (Stahl)

Two-dimensional vibrating probe analysis of extracellular currents around Rhodnius prolixus ovari oles correlated with an earlier one-dimensional analysis but revealed asymmetrical circumferential current pat terns and large tangential currents. Na@,K@,and Ca@2 have been tentatively identified as the major ions in vo!ved in these currents, with Na@being the major ion involved in current efflux.