Effects of coumaphos on queen rearing in the honey bee, Apis melliferaJeffery S. Pettisa, Anita M. Collinsa, Reg. Wilbanksb and Mark. F. Feldlaufera
a USDA, Agricultural Research Service, Bee Research Laboratory, Bldg. 476, BARC-East, Beltsville, Maryland 20705, USA
b Wilbanks Apiaries, Claxton, Georgia 30417, USA
(Received 3 November 2003; revised 11 February 2004; accepted 26 February 2004)
Abstract - Young honey bee larvae were transferred into the queen cups containing known concentrations (0 to 1000 mg/kg) of the organophosphate pesticide coumaphos. These larvae were placed in queenless colonies and examined ten days later to determine the rate of rejection or acceptance as indicated by a mature sealed queen cell. All queens failed to develop at 1000 mg/kg, and greater than 50% of the queen cells were rejected at the 100 mg/kg concentration. Additionally, queens that survived exposure to100 mg/kg coumaphos weighed significantly less than control queens. The implications of exposure of developing queens to sublethal amounts of pesticides are discussed.
Key words: coumaphos / queen rearing / residues / beeswax
Corresponding author: Jeffery S. Pettis email@example.com
© INRA, EDP Sciences, DIB, AGIB 2004