The Effect of Intercept® Trap Color on Ips typographus Captures (Preliminary Results)

Abstract

Most of the previous researches concerning the effect of the trap color on the captures proved that the bark beetles are strongly attracted to dark colored traps. In 2010, a series of experiments with Intercept® traps of different colors were performed, for which in addition to captures, the release rates of pheromones and the temperatures achieved in traps were determined. It was found that in dark colored traps (black and brown) which captured more insects, the dispensers released pheromones with higher rates than in light colored traps (white and yellow), due to higher temperatures inside them. Therefore, the catches may be influenced especially indirectly by the trap color, which influences the release rates of pheromones.