Fourteen compounds chemically related to the known yellowjacket attractant, heptyl butyrate, were tested for their attractiveness to yellowjackets in Washington State, Oklahoma and Michigan. Trapping experiments were conducted with the standard Trappit dome traps. The release rate of each chemical was controlled by the diameter of a hole drilled in the cap of the vial loaded with the chemicals tested. Heptyl butyrate was used as a positive control and a trap with no chemical lure was used as a negative control. Some of the chemicals tested were significantly attracted to some yellowjacket species and are candidates for further field testing.
Species 1: Hymenoptera Vespidae Vespula (yellowjackets)
Species 2: Hymenoptera Vespidae Dolichovespula (yellowjackets)
Keywords: feeding attractants, foraging behavior
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