Ant-aphid mutualisms: the impact of honeydew production and honeydew sugar composition on ant preferences Völkl, Wolfgang ; Woodring, Joseph ; Fischer, Melanie ; Lorenz, Matthias W. ; Hoffmann, Klaus H. Abstract Publication: Oecologia Pub Date: March 1999 DOI: 10.1007/s004420050751 Bibcode: 1999Oecol.118..483V