Fecha de publicación: 24/06/1991 Fuente: WIPO "apis" This composition comprises two or more of the following components in their honeybee (Apis mellifera L.) biologically active esters: (a) 9-keto-2(E)-decenoic acid; (b) R-(-)-9-hydroxy-2(E)-decenoic acid; (c) S-(+)-9-hydroxy-2(E)-decenoic acid; (d) methyl-p-hydroxybenzoate; and (e) 4-hydroxy-3-methoxyphenylethanol. The use of compound (e) as a honeybee attractant or for colony activity control is also claimed.