Difference in effect of pheromone for monitoring the European spruce bark beetle

In recent decades there have been an increasing number of outbreaks of the European spruce bark beetle (Ips typographus) in Europe. A large amount of sanitary felling has taken place, with significant economic and ecological consequences. In order to anticipate such large-scale outbreaks, an effective monitoring system should be set up. One important aspect of monitoring is the decision on which pheromone to use. We suggest a framework for selecting an effective pheromone with few side effects and implemented it on five different pheromones under different disturbance conditions: Pheroprax, IT Ecolure, Ipstyp, Ipsowit and Typosan. We set 50 traps in two areas with sites that were disturbed and undisturbed by wind storms. We collected bark beetles from traps every one to two weeks from the end of March until the end of September in 2019. We investigated the number of bark beetles caught, bark beetle dynamics, amount of bycatch and predators, the taxonomic groups of the bycatch and the ov...