Field response of Colorado potato beetle to enantiomeric blends of CPB I aggregation pheromone
- 1 Department of Entomology, Virginia Tech, Blacksburg, USA
- 2 Department of Entomology, Virginia Tech, Blacksburg, USA
- 3 Department of Entomology, Virginia Tech, Blacksburg, USA
- 4 Insect Pheromone and Traps Division, Fuji Flavor Co., Ltd., Tokyo, Japan
- 5 United States Department of Agriculture, Agriculture Research Service, Henry A. Wallace Beltsville Agricultural Research Center, Plant Sciences Institute, Invasive Insect Biocontrol and Behavior Laboratory, Beltsville, USA
Abstract
Colorado potato beetle, Leptinotarsa decemlineata , is attracted to ( S )-3,7-dimethyl-2-oxo-oct-6-ene-1,3-diol [( S )-CPB I], a male-produced aggregation pheromone. Pitfall trap studies were conducted to assess the relative attraction of L. decemlineata adults to synthetic mixtures of the ( S )- and ( R )-enantiomers of the pheromone. Of the following blends that were tested: 97%( S ):3%( R ), 87%( S ):13%( R ), 73%(S):27%( R ), and 50%(S):50%( R ) (racemic blend), only the blend containing 97% of the ( S )-enantionmer was attractive in one of the experiments. Our results demonstrate that the behavioral response of the beetle to pheromone-baited pitfall traps is unsubstantial in general, and that enantiomeric blends containing 13% or more of the opposite ( R ) enantiomer disrupt response to the pheromone. Any future research as well as integrated pest management strategies that incorporate CPB I as an aggregation pheromone should utilize blends containing more than 87% optical purity of the ( S )-enantiomer of the pheromone.
- Hare, J.D. (1990) Ecology and management of the Colorado potato beetle. Annual Review of Entomology, 35, 81-100. doi:10.1146/annurev.en.35.010190.000501
- Casagrande, R.A. (1987) The Colorado potato beetle: 125 years of mismanagement. Bulletin of the Entomological Society of America, 33, 142-150.
- Alyokhin, A., Baker, M., Mota-Sanchez, D., Dively, G. and Grafius, E. (2008) Colorado potato beetle resistance to insecticides. American Journal of Potato Research, 85, 395-413. doi:10.1007/s12230-008-9052-0
- Botha, J., Hardie, D. and Power, G. (2001) Colorado potato beetle Leptinotarsa decemlineata: Exotic threat to Western Australia. The Gov. Western Austr. Agriculture Factsheet Online. http://www.agric.wa.gov.au/content/pw/ins/pp/hort/fs00901.pdf
- Zhang, H., Li, X., Wang, C.J. and Qiu, L.H. (2007) Advances in the researches on control and insecticide resistance in Leptinotarsa decemlineata. Chinese Bulletin of Entomology, 44, 496-500.
- Dickens, J.C., Oliver, J.E, Hollister, B., Davis, J.C. and Klun, J.A. (2002) Breaking a paradigm: male-produced aggregation pheromone for the Colorado potato beetle. Journal of Experimental Biology, 205, 1925-1933.
- Hammock, J.A., Vinyard, B. and Dickens, J.C. (2007) Response to host plant odors and aggregation pheromone by larvae of the Colorado potato beetle on a servosphere. Arthropod-Plant Interactions, 1, 27-35. doi:10.1007/s11829-007-9005-4
- Kuhar, T.P., Mori, K. and Dickens, J.C. (2006) Potential of a synthetic aggregation pheromone for integrated pest management of Colorado potato beetle, Leptinotarsa decemlineata (Say). Agricultural and Forest Entomology, 8, 77-81. doi:10.1111/j.1461-9555.2006.00286.x
- Mori, K. and Tashiro, T. (2004) Useful reactions in modern pheromone synthesis. Current Organic Synthesis, 1, 11-29. doi:10.2174/1570179043485466
- Babu, B.N. and Chauhan, K.R. (2009) Enantioselective synthesis of (S)-3,7-dimethyl-2-oxo-6-octene-1,3-diol: A Colorado potato beetle pheromone. Tetrahedron Letters, 50, 66-67. doi:10.1016/j.tetlet.2008.10.092
- Klun, J.A., Chapman, O.L., Mattes, K.C., Wojtkowski, P.W., Beroza, M. and Sonnet, P.E. (1973) Insect sex pheromones: Minor amounts of opposite geometrical isomer critical to attraction. Science, 181, 661-663. doi:10.1126/science.181.4100.661
- Doolittle, R.E., Tumlinson, J.H., Proveaux, A.T. and Heath, R.R. (1979) Synthesis of the sex pheromone of the Japanese beetle. Journal of Chemical Ecology, 6, 1573- 1581.