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Pest Manag Sci

Title:		"Optimisation of the pheromone blend of the swede midge, Contarinia nasturtii, for monitoring"
Author(s):		Boddum T; Skals N; Wiren M; Baur R; Rauscher S; Hillbur Y;
Address:		"Chemical Ecology, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden. tina.boddum@ltj.slu.se"
Journal Title:		Pest Manag Sci
Year:		2009
Volume:		65
Issue:		8
Page Number:		851 - 856
DOI:		10.1002/ps.1762
ISSN/ISBN:		1526-4998 (Electronic) 1526-498X (Linking)
Abstract:		"BACKGROUND: The swede midge, Contarinia nasturtii Kieffer, is a serious pest in crucifers. Its pheromone is a blend of (2S,9S)-diacetoxyundecane, (2S,10S)-diacetoxyundecane and (2S)-acetoxyundecane. The pheromone is used in monitoring traps, and this study examines possible ways to optimise the traps. RESULTS: Two dispenser types were compared: polyethylene dispensers and cotton dispensers. Polyethylene dispensers attracted male C. nasturtii for more than 6 weeks, whereas cotton dispensers were attractive for only 2 weeks. All three pheromone components were important for attraction of male midges in the field. The importance of the stereoisomeric compositions of the pheromone compounds was also tested-both in the wind tunnel and in the field. In the case of 2,9-diacetoxyundecane and 2-acetoxyundecane, the non-natural stereoisomers did not inhibit male C. nasturtii attraction, whereas one or both of the stereoisomers of 2,10-diacetoxyundecane did. CONCLUSION: Pheromone traps with the synthetic pheromone in a 1:2:0.02 ratio emitted from PE dispensers were highly effective and long lasting. As the mixture of stereoisomers of 2,10-diacetoxyundecane strongly inhibited attraction of male C. nasturtii while those of 2,9-diacetoxyundecane and 2-acetoxyundecane did not have any inhibitory effect, it is possible to produce traps that are effective and long lasting but cheaper to produce and maintain"
Keywords:		Animals Cotton Fiber Diptera/*drug effects Female Male Pest Control/economics/*methods Pheromones/*chemistry/*pharmacology Polyethylene/chemistry Stereoisomerism;
Notes:		"MedlineBoddum, Tina Skals, Niels Wiren, Marit Baur, Robert Rauscher, Stefan Hillbur, Ylva eng Research Support, Non-U.S. Gov't England 2009/04/11 Pest Manag Sci. 2009 Aug; 65(8):851-6. doi: 10.1002/ps.1762"