The response of overwintering Cereal Leaf Beetle (CLB) adults to the male-produced pheromone, (E)-8-hydroxy-6-methyl-6-octen-3-one, was evaluated in a field trial in Oregon. Yellow sticky traps baited with 50 µg, 150 µg and 500 µg of pheromone in the presence of the plant-derived compound, (Z)-3-hexenyl acetate (HA), 500 µg of the pheromone alone, and HA alone were placed in a newly seeded grain field. Numbers of adults on each trap were recorded and lures replaced each week. Data from five weeks indicated that the synthetic pheromone alone was significantly active to both sexes. There was a positive dose response for the pheromone, but no effects were found for (Z)-3-hexenyl acetate, either alone or in combination with the pheromone. The results are encouraging and indicate that the male-produced CLB pheromone is active in the field. Further research and potential use of CLB pheromone lures in the field will be discussed.
Species 1: Coleoptera Chrysomelidae Oulema melanopus (Cereal Leaf Beetle)
Keywords: chemical communication, aggregation pheromone
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