Studies on the chemical nature of feeding stimulants for the juvenile European eel, Anguilla anguilla (L.)

A study has been made of the chemical nature of feeding stimulants for juvenile European eels, Anguilla anguilla . Mixtures of L-amino acids were stimulatory, while neither the corresponding. D-amino acids nor the non-amino acid components were effective. Synergistic effects were observed both between L-amino acids and between L-amino acids and non-amino acid constituents. The results are discussed in the context of results obtained from electrophysiological and behavioural studies with other species.