Influence of proportion of (4S)‐cis‐verbenol in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barrier and in single traps

@article{Jaku2002InfluenceOP,
  title={Influence of proportion of (4S)‐cis‐verbenol in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barrier and in single traps},
  author={Rastislav Jaku{\vs} and Miroslav Bla{\vz}enec},
  journal={Journal of Applied Entomology},
  year={2002},
  volume={126}
}
Abstract:  The possibilities of increasing catching efficiency of male Ips typographus L in pheromone traps barriers and in single traps were tested. Pheromone dispensers with different percentages of (4S)‐cis‐verbenol (cV) in pheromone mixtures were used. The results show that the different male catching efficiencies of pheromone trap barriers and single traps were related to the different percentages of cV in the pheromone bait. The proportions of males were higher in pheromone trap barriers… 

Influence of the proportion of (−) α‐pinene in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barriers and in single traps

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Monitoring the seasonal variation in the sex-specific responses of Ips typographus to a commercial pheromone in relation to the two generations per year occurring in the Southern Alps found that the low proportion of males in traps depends both on discrimination and on differential mortality of the sex over time.

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The main advantages of TRIPODs compared to the TRAP TREEs are first, that pheromone lures will make any spruce timber attractive to I. typographus; and second, that logs need not be decontaminated at a particular time and, consequently, they require significantly less surveillance.

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Both traps captured more adults in spring than in summer, and the higher numbers of entomophagous arthropods, including the predacious beetles Thanasimus formicarius L. and T. femoralis, were captured in the TRIPODs than in the TPTs.

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