Failure to Observe Changes in Selected Metabolites Following Removal of the Stannius Corpuscles from the Freshwater North American Eel, Anguilla rostrata

Abstract

There were no measurable changes in plasma glucose, protein, or free fatty acid concentrations in the freshwater North American eel, Anguilla rostrata, 2 weeks after excision of the Stannius corpuscles. Liver glycogen concentrations were normal but muscle glycogen increased. Plasma Na decreased and K and Ca increased. These data indicate that secretions of the Stannius corpuscles are primarily concerned with ionoregulation.