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Journal of Experimental Biology 92,187-201 (1981)
Published by Company of Biologists 1981

Interneuronal Control of Feeding in the Pond Snail Lymnaea Stagnalis : I. Initiation of Feeding Cycles by a Single Buccal Interneurone

R. M. ROSE 1 and P. R. BENJAMIN 2

1 School of Biological Sciences, University of Sussex Falmer, Brighton, Sussex BN1 9QG; Department of Physiology, University College, Cardiff, P.O. Box 78, Cardiff, F1 1XL
2 School of Biological Sciences, University of Sussex Falmer, Brighton, Sussex BN1 9QG

The Lymnaea buccal ganglion is organized such that the basic feeding rhythm is generated by an interneuronal network which imposes its activity on a set of follower cells. In this paper we extend our earlier observations (Benjamin & Rose, 1979) on the follower cells to show that they receive four consecutive synaptic inputs. The main objective of the paper is to describe the properties of an interneurone called the ‘slow oscillator’ which is capable of initiating feeding cycles. This interneurone will be used in the following paper (Rose & Benjamin, 1981) to drive other members of the interneuronal network in order to determine how it is organized, and to understand the origin and timing of the four synaptic inputs to the follower cells.

Submitted on August 5, 1980




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© The Company of Biologists Ltd 1981