Jeff Harris and J. Woodring, Dept. of Zoology, Louisiana State University gave a paper at the American Bee Research Conference held at College Station, TX on biogenic amine levels in brains of worker bees. Seems dopamine levels rise in individual worker brains with queenlessness. Perhaps these folks also know about the homogenized bee brain work. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Tom Sanford Extension Apiculturist University of Florida Mailing Address: Bldg 970, Hull Rd., Gainesville, FL 32611-0620 Voice phone 904/392-1801, Ext. 143 FAX 904/392-0190 INTERNET: [log in to unmask] BITNET: MTS@IFASGNV +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++